Eid and digital currency
Publish: 2021-05-14 03:25:36
1. 1 CA system determines the user's unique identity through "digital certificate". In reality, a person may have multiple identities, one identity may play multiple roles, and roles often change. CA certificate is difficult to cope with strong dynamic changes. When a person's work role or business operation scope changes, he or she needs to cancel the original CA certificate and apply for a new one to prove the uniqueness of his or her identity. If you use Eid, the above process can be simplified. You only need to define the user's permission for each mole in the application system. The application system will submit Eid to the public security database for query to know whether the person really exists and whether the Eid is valid
(2) domestic CA construction has formed a situation of regional separatism, forming their own information base, but has not achieved regional interconnection. For example, online banking is the most frequently used ukey (carrier of CA certificate) in people's life. If the same person has online banking accounts of multiple banks, he must manage and use ukey matching with their respective online banking. If Eid is fully promoted and applied, it can support the possibility of using one Eid to access multiple online banking accounts and solve the problem of "information island" caused by CA certificate
(3) the CA certificate contains the user's private information in the state of static plaintext, and these information do not have the function of protection (anyone can get it), nor do they have good sharing (the available information is few and fixed)
(4) considering the security level, each CA certificate defines the valid time of the certificate inside the certificate, but the traditional digital (CA) certification authority does not have a mechanism to master the status change of identity information after the personal digital certificate is issued. If someone's identity is cancelled after his death, but others can still use his certificate, that is to say, the subject of transaction no longer exists, but the transaction continues
(5) the application and cancellation of CA certificate is troublesome, and the processing process is not convenient. People can rely on the existing ID card processing process to realize the application and cancellation of Eid in the public security organs, so as to achieve a convenient, fast and wide coverage of Eid processing experience.
(2) domestic CA construction has formed a situation of regional separatism, forming their own information base, but has not achieved regional interconnection. For example, online banking is the most frequently used ukey (carrier of CA certificate) in people's life. If the same person has online banking accounts of multiple banks, he must manage and use ukey matching with their respective online banking. If Eid is fully promoted and applied, it can support the possibility of using one Eid to access multiple online banking accounts and solve the problem of "information island" caused by CA certificate
(3) the CA certificate contains the user's private information in the state of static plaintext, and these information do not have the function of protection (anyone can get it), nor do they have good sharing (the available information is few and fixed)
(4) considering the security level, each CA certificate defines the valid time of the certificate inside the certificate, but the traditional digital (CA) certification authority does not have a mechanism to master the status change of identity information after the personal digital certificate is issued. If someone's identity is cancelled after his death, but others can still use his certificate, that is to say, the subject of transaction no longer exists, but the transaction continues
(5) the application and cancellation of CA certificate is troublesome, and the processing process is not convenient. People can rely on the existing ID card processing process to realize the application and cancellation of Eid in the public security organs, so as to achieve a convenient, fast and wide coverage of Eid processing experience.
2. Hello
the difference between ICP record number and ICP business license is mainly business and non business
the purpose of ICP filing is to prevent illegal website business activities on the Internet and crack down on the spread of bad Internet information. If the website is not filed, it is likely to be shut down after investigation. All websites should have ICP record, but only websites providing paid information services need to apply for ICP license
Internet information service business license, namely website ICP business license, also known as website ICP license
according to the order of the State Council of the people's Republic of China No. 291 telecommunication regulations of the people's Republic of China and No. 292 measures for the administration of Internet information services, the State implements a license system for ICP providing Internet information services. Thus, the ICP license becomes the license of website operation, and the operating website must apply for the ICP license, otherwise it belongs to illegal operation. Therefore, to apply for ICP certificate is the need of legal operation of enterprise website. The ICP license is issued by local communication management departments
I hope the above answers can help you!
the difference between ICP record number and ICP business license is mainly business and non business
the purpose of ICP filing is to prevent illegal website business activities on the Internet and crack down on the spread of bad Internet information. If the website is not filed, it is likely to be shut down after investigation. All websites should have ICP record, but only websites providing paid information services need to apply for ICP license
Internet information service business license, namely website ICP business license, also known as website ICP license
according to the order of the State Council of the people's Republic of China No. 291 telecommunication regulations of the people's Republic of China and No. 292 measures for the administration of Internet information services, the State implements a license system for ICP providing Internet information services. Thus, the ICP license becomes the license of website operation, and the operating website must apply for the ICP license, otherwise it belongs to illegal operation. Therefore, to apply for ICP certificate is the need of legal operation of enterprise website. The ICP license is issued by local communication management departments
I hope the above answers can help you!
3. Eid operators, providing simeid card electronic signature channel
4. You can watch it on the mobile phone inside, and my mobile phone can query it.
5. ===========================================
Eid = Arabic "Festival" means
Eid Festival = Festival? It can be translated as "Arab Festival"
= = = = = = = = = = = = = = = = = =
Eid is Arabic, which means "Festival". Eid does not necessarily mean "Eid". Arab festivals (EID) include:
(1) Eid ulfitr (EID)
(2) Eid uladha (sacrifice Festival, also known as eid-e Qurban)
(3) eid-e Nowruz
(4) Eid Milad Nabi< br />(5) Eid E Shuja
Eid = Arabic "Festival" means
Eid Festival = Festival? It can be translated as "Arab Festival"
= = = = = = = = = = = = = = = = = =
Eid is Arabic, which means "Festival". Eid does not necessarily mean "Eid". Arab festivals (EID) include:
(1) Eid ulfitr (EID)
(2) Eid uladha (sacrifice Festival, also known as eid-e Qurban)
(3) eid-e Nowruz
(4) Eid Milad Nabi< br />(5) Eid E Shuja
6. Eid al Fitr is one of the three major Islamic religious festivals. Islam has its own calendar, which is calculated by the movement of the moon around the earth, that is, the lunar calendar. Unlike the Chinese lunar calendar, it does not use leap years to adjust the synchronous relationship with the solar calendar. The ninth month of the Islamic calendar is called "Ramadan", which is the month for believers to fast. It is advanced one month every three years. Therefore, it sometimes appears in winter and sometimes in summer. This year, it starts from the evening of June 27 of the Gregorian calendar. According to the current time of sunrise and sunset, believers are required to fast from about 4:20 a.m. to about 7:10 p.m. to have a simple and light dinner<
Eid al Fitr is on July 29, 2014 (Tuesday).
Eid al Fitr is on July 29, 2014 (Tuesday).
7. But when I applied, I used someone else's ID card. What should I do? Question: my TenPay wealth should have a prompt to change the binding number, right? Otherwise you should not be able to use it
8. Website:
ADuC812 reference
http://www.21chip.com/designOp/Print.asp?ArticleID=776
ADuC831 reference http://www.analog.net.cn/article/wz1/200702/20070201012602.html
ADuC812 reference
http://www.21chip.com/designOp/Print.asp?ArticleID=776
ADuC831 reference http://www.analog.net.cn/article/wz1/200702/20070201012602.html
9. Detailed explanation of fine processing of human voice effect
most people use the method of repeated exploratory adjustment to find the best processing effect of sound effect. The shortcomings of this kind of tuning method are very obvious:
(1) to find an ideal tuning effect, we need to guess many times, so it takes a long time for teachers
(2) better tuning effect is often encountered by accident, which is not helpful for the summary of tuning rules, and it is not easy to reproce in the future
(3) the fixed and adjustable parameters of different equipment are different, so the experience of using one equipment can not be used for another equipment
with the development of the current effect processing equipment, there are not many technical means to change the voice color of the sound source, among which only three basic methods are commonly used, such as frequency equalization, delay feedback and limiting distortion. However, the voice color proced by different parameter combinations of these effect processing equipment is quite different
there are many parameter settings for the effect processor, especially the delay feedback. Theoretically, there are dozens of parameter settings for the simulated reverberation effect. Of course, these highly professional parameters are difficult for most people to understand and do not know how to understand. Therefore, most of the effect processing equipment only set one or two adjustable parameters, and its adjustable range is relatively narrow. This simple adjustment of the effect processing equipment allows people to make trial adjustments on it without too much problem. However, for the occasions where the effect processing requires more fine tuning, such as in the multi track recording system, more professional effect processing equipment must be used to make more fine effect processing
frequency equalization
it is obvious that the more segments of frequency equalization, the higher the precision of effect processing. In addition to graphic equalization, the general tuning equalization unit usually has only three or four frequency bands, which obviously can not meet the requirements of accurate processing of sound source. In order to be flexible enough for arbitrary equalization of human voice, we propose to use band frequency equalization with adjustable gain, frequency point and width< However, it does not mean that the other two parameters do not exist, and these two parameters are fixed and not adjustable. Of course, it is not difficult to set these two parameters to be adjustable, but these will increase the cost of the equipment and complicate its adjustment. Therefore, the parameter equalization circuit with adjustable gain, frequency point and width can only be seen in high-end equipment
in fact, the gain, frequency point and width are all adjustable frequency equalization, so it is almost impossible to find an ideal timbre by guessing. Here we must study the physical characteristics, technical parameters of audio signal and its corresponding relationship in the sense of human hearing
the spectrum distribution of human voice source is quite special. As far as its pronunciation is concerned, it has three parts: one is the musical sound proced by vocal cord vibration, which is the most flexible in pronunciation, and the spectrum changes greatly with different pitches and different pronunciation methods; Second, the shape of the nasal cavity is relatively stable, so the frequency distribution of the resonance proced by the nasal cavity has little change; The third is the friction sound of oral airflow between the teeth, which has nothing to do with the musical sound proced by vocal cord vibration
frequency equalization can roughly separate the three parts of the spectrum. The frequency range of nasal tone is 500Hz, the midpoint frequency of the following equalization is generally 80 ~ 150Hz, and the equalization bandwidth is 4 octaves. For example, 100Hz can be set as the midpoint of frequency equalization, the equalization curve should transition smoothly from 100Hz to 400Hz, and the adjustment range of equalization gain can be + 10dB ~ - 6dB. Here, we should remind you that the monitor speaker for this adjustment should not use a small box with very weak low-frequency pronunciation, so as to avoid excessive emphasis of nasal sound
the frequency spectrum of human voice varies greatly with the tone, so the equalization curve should be very smooth. The midpoint frequency of equalization can be between 1000 Hz and 3400Hz, and the equalization bandwidth is six octaves. This band controls the brightness of singing voice, and upward adjustment can gently improve the brightness of human voice. However, if you need to rece the brightness of the voice, the situation will be more complicated. Generally speaking, most of the people's voices with too bright sound sense have strong spectrum near 2500Hz. Here, we can use the equalization processing with the equalization bandwidth of 1 / 2 octave and the equalization gain of about - 4dB to find the best frequency point near 2500Hz
the frequency spectrum distribution of human voice is above 4kHz. Since this frequency band also contains part of the music spectrum, it is suggested that the frequency band for adjusting the dental tone should be 6 ~ 16KHz, the equalization bandwidth should be 3 octaves, the equalization midpoint frequency is generally 10 ~ 12khz, and the maximum equalization gain can be adjusted up to + 10dB; If it is necessary to rece the loudness of human voice, the equalization processing with 1 / 2 octave bandwidth and 6800hz midpoint frequency should be used, and the minimum equalization gain can be reced to - 10dB
from the above analysis, it can be seen that when frequency equalization is applied to human voice, the broadband equalization with gentle curve is used as far as possible to enhance the frequency band in order to highlight a certain sound sense. This is to make the spectrum distribution of nasal, musical and dental sounds uniform and coherent, so as to make their pronunciation natural and smooth. Theoretically speaking, the loudness of human voice should be kept constant when it makes any sound
in order to deal with the specific effect on the basis of not destroying the natural feeling of human life, 1 / 5 octave frequency equalization can be used, specifically in the following situations:
(1) narrow sound sense and lack of thickness, 1 / 5 octave frequency attenuation can be used at 800Hz, and the maximum attenuation can be - 3dB
(2) the sound sense of rolling teeth is shrill; Shh & quot; It can be attenuated by 1 / 5 octave at 2500Hz, and the maximum attenuation can be - 6dB
it is better to use an equalizer that can display the equalization curve for the equalization of sound source. General digital mixer equalizer equalization gain adjustment button with & quot; G" The equalization frequency adjustment button is & quot; F" The balance bandwidth adjustment button is & quot; F" Or & quot; Q" To identify
delayed feedback
delayed feedback is the most widely used but also the most complex way in effect processing. Among them, reverberation, chorus, edging, echo and other effects, the basic processing method is delay feedback
1. Reverberation
reverberation effect is mainly used to increase the sense of fusion of sound source. The delay array of natural sound source is very dense and complex, so the program of simulating reverberation effect is also complex. Common parameters are as follows:
reverberation time: digital reverberators that can simulate natural reverberation realistically have a set of complex programs. Although there are many adjustable technical parameters, the adjustment of these technical parameters will not be more natural than the original effect, especially the reverberation time
high frequency roll off: this parameter is used to simulate the absorption effect of air on high frequency in natural reverberation, so as to proce more natural reverberation effect. Generally, the adjustable range of high frequency mixed drop is 0.1 ~ 1.0. When the value is higher, the reverberation effect is close to the natural reverberation; When the value is lower, the reverberation effect is clearer
diffusivity: this parameter can adjust the growth rate of reverberation array density, and its adjustable range is 0 ~ 10. When the value is higher, the reverberation effect is richer and warmer; When the value is low, the reverberation effect is more open and remote
pre delay: the establishment of natural reverberation array will be delayed for a period of time, and the pre delay is set to simulate the secondary effect
sound array density: this parameter can adjust the sound array density. When the value is higher, the reverberation effect is warmer, but there is obvious sound staining; When the value is lower, the reverberation effect is deeper and the cut dyeing is weaker
frequency molation: This is a technical parameter, because the acoustic array density of electronic reverberation is thinner than that of natural reverberation. In order to make the reverberation sound more smooth and coherent, it is necessary to molate the delay time of reverberation array. This technology can effectively eliminate the split sound of delay array and increase the softness of reverberation
molation depth: refers to the molation depth of the above frequency molation circuit
reverberation type: the natural reverberation arrays in different rooms are quite different, and this difference can not be expressed by one or two parameters. In digital reverberators, different natural reverberation needs different proceres. The general options are s-hall, l-hall, room, random, reverse, plate, spring, etc. The reverberation of small hall and large hall belongs to natural reverberation effect; The reverberation of steel plate and spring can simulate the treatment effect of early mechanical reverberation
Room size: This is set to match the natural reverberation effect and is easy to understand
Room activity: activity is the reverberation intensity of a room, which is related to the sound absorption characteristics of the room wall. This parameter is used to adjust this characteristic
balance between early reflection sound and reverberation sound: the early reflection sound of reverberation is closely related to its processing effect, while the sound sense of reverberation sound array is not so changeable, so the generation of these two parts of digital reverberator is separate. This parameter is used to adjust the loudness balance between early reflection sound and reverberation sound array
delay time of early reflection sound and reverberation sound: the delay time control between early reflection sound and reverberation sound array. For a long time, the front part of reverberation effect is clearer; If this time is short, the early reflected sound and reverberation sound will overlap, and the front part of reverberation effect will be turbid
in addition to the above adjustable parameters, reverberation effect also has some other auxiliary parameters, such as low-pass filter, high pass filter, loudness balance control of direct / reverberation sound, etc
2. Delay
delay is to delay the sound source for a period of time, and then to play the effect. According to the different delay time, it can proce chorus, border, echo and other effects
when the delay time is between 3 ms and 35 ms, the human ear can't feel the presence of lag sound, and it will proce & quot; because of its phase interference when it is superimposed with the original sound source; Comb filter & quot; This is the edge effect. If the delay time is more than 50 ms, the delay sound can be clearly identified, and the processing effect is the echo. Echo processing is generally used to proce a simple reverberation effect
the adjustable parameters of delay, chorus, edging, echo and other effects are similar, including the following:
* delay time (dly), that is, the delay time adjustment of the main delay circuit
* feedback gain (fbgain), i.e. delay feedback gain control
* feedback high frequency ratio (hiratio), that is, the high frequency attenuation control on the feedback loop
* molation frequency refers to the frequency molation period of the main delay
* molation depth refers to the molation depth of the above frequency molation circuit
* high frequency gain (HF) refers to high frequency equalization control
* inidly refers to the adjustment of the pre delay time of the main delay circuit
* equalization frequency (eqf), where the frequency equalization is used for tone adjustment, is the midpoint frequency selection of equalization< br />
most people use the method of repeated exploratory adjustment to find the best processing effect of sound effect. The shortcomings of this kind of tuning method are very obvious:
(1) to find an ideal tuning effect, we need to guess many times, so it takes a long time for teachers
(2) better tuning effect is often encountered by accident, which is not helpful for the summary of tuning rules, and it is not easy to reproce in the future
(3) the fixed and adjustable parameters of different equipment are different, so the experience of using one equipment can not be used for another equipment
with the development of the current effect processing equipment, there are not many technical means to change the voice color of the sound source, among which only three basic methods are commonly used, such as frequency equalization, delay feedback and limiting distortion. However, the voice color proced by different parameter combinations of these effect processing equipment is quite different
there are many parameter settings for the effect processor, especially the delay feedback. Theoretically, there are dozens of parameter settings for the simulated reverberation effect. Of course, these highly professional parameters are difficult for most people to understand and do not know how to understand. Therefore, most of the effect processing equipment only set one or two adjustable parameters, and its adjustable range is relatively narrow. This simple adjustment of the effect processing equipment allows people to make trial adjustments on it without too much problem. However, for the occasions where the effect processing requires more fine tuning, such as in the multi track recording system, more professional effect processing equipment must be used to make more fine effect processing
frequency equalization
it is obvious that the more segments of frequency equalization, the higher the precision of effect processing. In addition to graphic equalization, the general tuning equalization unit usually has only three or four frequency bands, which obviously can not meet the requirements of accurate processing of sound source. In order to be flexible enough for arbitrary equalization of human voice, we propose to use band frequency equalization with adjustable gain, frequency point and width< However, it does not mean that the other two parameters do not exist, and these two parameters are fixed and not adjustable. Of course, it is not difficult to set these two parameters to be adjustable, but these will increase the cost of the equipment and complicate its adjustment. Therefore, the parameter equalization circuit with adjustable gain, frequency point and width can only be seen in high-end equipment
in fact, the gain, frequency point and width are all adjustable frequency equalization, so it is almost impossible to find an ideal timbre by guessing. Here we must study the physical characteristics, technical parameters of audio signal and its corresponding relationship in the sense of human hearing
the spectrum distribution of human voice source is quite special. As far as its pronunciation is concerned, it has three parts: one is the musical sound proced by vocal cord vibration, which is the most flexible in pronunciation, and the spectrum changes greatly with different pitches and different pronunciation methods; Second, the shape of the nasal cavity is relatively stable, so the frequency distribution of the resonance proced by the nasal cavity has little change; The third is the friction sound of oral airflow between the teeth, which has nothing to do with the musical sound proced by vocal cord vibration
frequency equalization can roughly separate the three parts of the spectrum. The frequency range of nasal tone is 500Hz, the midpoint frequency of the following equalization is generally 80 ~ 150Hz, and the equalization bandwidth is 4 octaves. For example, 100Hz can be set as the midpoint of frequency equalization, the equalization curve should transition smoothly from 100Hz to 400Hz, and the adjustment range of equalization gain can be + 10dB ~ - 6dB. Here, we should remind you that the monitor speaker for this adjustment should not use a small box with very weak low-frequency pronunciation, so as to avoid excessive emphasis of nasal sound
the frequency spectrum of human voice varies greatly with the tone, so the equalization curve should be very smooth. The midpoint frequency of equalization can be between 1000 Hz and 3400Hz, and the equalization bandwidth is six octaves. This band controls the brightness of singing voice, and upward adjustment can gently improve the brightness of human voice. However, if you need to rece the brightness of the voice, the situation will be more complicated. Generally speaking, most of the people's voices with too bright sound sense have strong spectrum near 2500Hz. Here, we can use the equalization processing with the equalization bandwidth of 1 / 2 octave and the equalization gain of about - 4dB to find the best frequency point near 2500Hz
the frequency spectrum distribution of human voice is above 4kHz. Since this frequency band also contains part of the music spectrum, it is suggested that the frequency band for adjusting the dental tone should be 6 ~ 16KHz, the equalization bandwidth should be 3 octaves, the equalization midpoint frequency is generally 10 ~ 12khz, and the maximum equalization gain can be adjusted up to + 10dB; If it is necessary to rece the loudness of human voice, the equalization processing with 1 / 2 octave bandwidth and 6800hz midpoint frequency should be used, and the minimum equalization gain can be reced to - 10dB
from the above analysis, it can be seen that when frequency equalization is applied to human voice, the broadband equalization with gentle curve is used as far as possible to enhance the frequency band in order to highlight a certain sound sense. This is to make the spectrum distribution of nasal, musical and dental sounds uniform and coherent, so as to make their pronunciation natural and smooth. Theoretically speaking, the loudness of human voice should be kept constant when it makes any sound
in order to deal with the specific effect on the basis of not destroying the natural feeling of human life, 1 / 5 octave frequency equalization can be used, specifically in the following situations:
(1) narrow sound sense and lack of thickness, 1 / 5 octave frequency attenuation can be used at 800Hz, and the maximum attenuation can be - 3dB
(2) the sound sense of rolling teeth is shrill; Shh & quot; It can be attenuated by 1 / 5 octave at 2500Hz, and the maximum attenuation can be - 6dB
it is better to use an equalizer that can display the equalization curve for the equalization of sound source. General digital mixer equalizer equalization gain adjustment button with & quot; G" The equalization frequency adjustment button is & quot; F" The balance bandwidth adjustment button is & quot; F" Or & quot; Q" To identify
delayed feedback
delayed feedback is the most widely used but also the most complex way in effect processing. Among them, reverberation, chorus, edging, echo and other effects, the basic processing method is delay feedback
1. Reverberation
reverberation effect is mainly used to increase the sense of fusion of sound source. The delay array of natural sound source is very dense and complex, so the program of simulating reverberation effect is also complex. Common parameters are as follows:
reverberation time: digital reverberators that can simulate natural reverberation realistically have a set of complex programs. Although there are many adjustable technical parameters, the adjustment of these technical parameters will not be more natural than the original effect, especially the reverberation time
high frequency roll off: this parameter is used to simulate the absorption effect of air on high frequency in natural reverberation, so as to proce more natural reverberation effect. Generally, the adjustable range of high frequency mixed drop is 0.1 ~ 1.0. When the value is higher, the reverberation effect is close to the natural reverberation; When the value is lower, the reverberation effect is clearer
diffusivity: this parameter can adjust the growth rate of reverberation array density, and its adjustable range is 0 ~ 10. When the value is higher, the reverberation effect is richer and warmer; When the value is low, the reverberation effect is more open and remote
pre delay: the establishment of natural reverberation array will be delayed for a period of time, and the pre delay is set to simulate the secondary effect
sound array density: this parameter can adjust the sound array density. When the value is higher, the reverberation effect is warmer, but there is obvious sound staining; When the value is lower, the reverberation effect is deeper and the cut dyeing is weaker
frequency molation: This is a technical parameter, because the acoustic array density of electronic reverberation is thinner than that of natural reverberation. In order to make the reverberation sound more smooth and coherent, it is necessary to molate the delay time of reverberation array. This technology can effectively eliminate the split sound of delay array and increase the softness of reverberation
molation depth: refers to the molation depth of the above frequency molation circuit
reverberation type: the natural reverberation arrays in different rooms are quite different, and this difference can not be expressed by one or two parameters. In digital reverberators, different natural reverberation needs different proceres. The general options are s-hall, l-hall, room, random, reverse, plate, spring, etc. The reverberation of small hall and large hall belongs to natural reverberation effect; The reverberation of steel plate and spring can simulate the treatment effect of early mechanical reverberation
Room size: This is set to match the natural reverberation effect and is easy to understand
Room activity: activity is the reverberation intensity of a room, which is related to the sound absorption characteristics of the room wall. This parameter is used to adjust this characteristic
balance between early reflection sound and reverberation sound: the early reflection sound of reverberation is closely related to its processing effect, while the sound sense of reverberation sound array is not so changeable, so the generation of these two parts of digital reverberator is separate. This parameter is used to adjust the loudness balance between early reflection sound and reverberation sound array
delay time of early reflection sound and reverberation sound: the delay time control between early reflection sound and reverberation sound array. For a long time, the front part of reverberation effect is clearer; If this time is short, the early reflected sound and reverberation sound will overlap, and the front part of reverberation effect will be turbid
in addition to the above adjustable parameters, reverberation effect also has some other auxiliary parameters, such as low-pass filter, high pass filter, loudness balance control of direct / reverberation sound, etc
2. Delay
delay is to delay the sound source for a period of time, and then to play the effect. According to the different delay time, it can proce chorus, border, echo and other effects
when the delay time is between 3 ms and 35 ms, the human ear can't feel the presence of lag sound, and it will proce & quot; because of its phase interference when it is superimposed with the original sound source; Comb filter & quot; This is the edge effect. If the delay time is more than 50 ms, the delay sound can be clearly identified, and the processing effect is the echo. Echo processing is generally used to proce a simple reverberation effect
the adjustable parameters of delay, chorus, edging, echo and other effects are similar, including the following:
* delay time (dly), that is, the delay time adjustment of the main delay circuit
* feedback gain (fbgain), i.e. delay feedback gain control
* feedback high frequency ratio (hiratio), that is, the high frequency attenuation control on the feedback loop
* molation frequency refers to the frequency molation period of the main delay
* molation depth refers to the molation depth of the above frequency molation circuit
* high frequency gain (HF) refers to high frequency equalization control
* inidly refers to the adjustment of the pre delay time of the main delay circuit
* equalization frequency (eqf), where the frequency equalization is used for tone adjustment, is the midpoint frequency selection of equalization< br />
10.
Solution:
1. When registering the appleid account on the software, pay attention to choose the payment method as "UnionPay". At present, because the version of the software has been updated, you can't register the appleid account without binding the bank card as before
Then fill in the bank card and input the reserved mobile phone number Next, fill in the name, street address, region, zip code, province and mobile phone number of the indivial under the billing address4. Click create appleid to enter the next step
5. Then collect the SMS verification code of the binding bank and input it to verify
6. When logging in to register the appleid, use e-mail to receive the appleid verification email sent by apple and open it
7. Click verify now, then input appleid and password to verify and activate< br />
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