CN205017505U - Digit microphone and audio processing system - Google Patents
Digit microphone and audio processing system Download PDFInfo
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- CN205017505U CN205017505U CN201520617160.0U CN201520617160U CN205017505U CN 205017505 U CN205017505 U CN 205017505U CN 201520617160 U CN201520617160 U CN 201520617160U CN 205017505 U CN205017505 U CN 205017505U
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Abstract
The utility model discloses a digit microphone and a audio processing system, this digit microphone includes: pickup unit, AD conversion unit, protocol conversion unit and digital audio interface, wherein, the pickup unit is used for picking up outside voice signal, and will outside sound signal conversion is an analog signal, AD conversion unit be used for with an analog signal transition is a data signal, the protocol conversion unit be used for with a data signal converts the 2nd data signal into, the 2nd data signal accord with with the digital audio interface protocol of digital audio interface adaptation, the digital audio interface with protocol conversion unit electric connection, be used for with the 2nd data signal exports outside digital audio equipment to. The utility model discloses a relatively poor problem of tone quality effect of the microphone that the digit microphone can be avoided having now.
Description
Technical field
The utility model relates to Audio Signal Processing technical field, particularly relates to a kind of digital microphone and audio frequency processing system.
Background technology
At present, the microphone generally used adopts analog signal to carry out the transmission of sound mostly.In the transmitting procedure of analog signal, the impact of electromagnetic interference in environment can be subject to unavoidably, and the antijamming capability of the transfer voice adopting analog signal to carry out is poor, be difficult to again when reception eliminate already present interference ideally, the final signal formed is caused often to there is a large amount of noises, and cause distorted signals, finally cause the acoustical quality of microphone poor.
Based on the problems referred to above, be necessary to be improved existing microphone, to put goods on the market better in application.
Utility model content
The utility model is to provide a kind of digital microphone, the problem that the acoustical quality for solving microphone of the prior art is poor.
Another object of the present invention is the audio frequency processing system providing a kind of problem poor for the acoustical quality solving microphone of the prior art.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is:
A kind of digital microphone, comprising: pickup unit, AD conversion unit, conversion unit of protocol and digital audio interface; Wherein, external voice signal for picking up external voice signal, and is converted to the first analog signal by pickup unit; AD conversion unit is used for the first analog signal to be converted to the first digital signal; Conversion unit of protocol is used for the first digital signal to be converted to the second digital signal, and the second digital signal meets the digital audio interface agreement with digital audio interface adaptation; Digital audio interface and conversion unit of protocol are electrically connected, for exporting the second digital signal to external digital audio frequency apparatus.
Above-mentioned digital microphone also comprises the first monitoring interface; Described first monitors interface by described first analog signal output to outside audiomonitor; And/or above-mentioned digital audio interface also for receiving external digital audio signal, and is sent to conversion unit of protocol; External digital audio signal is converted to three digital audio and video signals suitable with AD conversion unit by conversion unit of protocol, and is sent to AD conversion unit; AD conversion unit and first is monitored interface electric signals and is connected, and for three digital signal is converted to the second analog signal, and exports it to outside audiomonitor by the first monitoring interface.
Above-mentioned digital microphone also comprises a listening key, and described first monitors interface under the control of described listening key by described first analog signal or described second analog signal output extremely outside audiomonitor.
Above-mentioned digital audio interface comprises at least one in AES audio interface, coaxial audio interface and optical fiber audio interface.
Digital audio interface is coaxial audio interface, and itself and external digital audio frequency apparatus are interconnected by coaxial cable, between coaxial audio interface and conversion unit of protocol, arrange common mode choke, the radiation produced in order to suppress coaxial cable.
Digital audio interface is coaxial audio interface, arranges a filter circuit between coaxial audio interface and conversion unit of protocol, the interference signal produced by ground wire coupled modes in order to filtering.
AD conversion unit, conversion unit of protocol and digital audio interface form the main body of digital microphone, and pickup unit is removably electrically connected with main body.
Digital microphone also comprises: audio effect processing unit, be connected between AD conversion unit and conversion unit of protocol, the first digital signal for being formed AD conversion unit forms the 4th digital signal after carrying out audio effect processing, and export the 4th digital signal to conversion unit of protocol, through being exported by digital audio interface after being converted to the second digital signal to make the 4th digital signal by conversion unit of protocol.
Digital microphone also comprises: the first downmixing unit, the first inert stage connecting port, the second inert stage connecting port and second monitor interface; Wherein, the first inert stage connecting port is integrated with the first analog input channel and the first analog output channel; Second inert stage connecting port is integrated with the second analog input channel and the second analog output channel; First downmixing unit is connected between pickup unit and AD conversion unit, and be electrically connected with first, second inert stage connecting port, export the 3rd analog signal after the first analog signal for being formed the external analog audio signal inputted by the first analog input channel and pickup unit carries out stereo process and the 3rd analog signal is exported by the second analog output channel, or, make it finally export via digital audio interface the 3rd analog signal output to AD conversion unit; Second monitors interface is electrically connected with the first downmixing unit and outside audiomonitor respectively, and the second analog signal transmission exported to make the first downmixing unit is to outside audiomonitor.
Above-mentioned digital microphone also comprises the second downmixing unit; Digital audio interface comprises primary digitals stage connecting port and the second digital stage connecting port; Wherein, primary digitals stage connecting port is integrated with the first digital input channel and the first digital output channel; Second digital stage connecting port is integrated with the second digital input channel and the second digital output channel; Second downmixing unit is connected with the conversion unit of protocol signal of telecommunication, and be electrically connected with first, second digital stage connecting port, export the 5th digital signal after the second digital signal for being formed the external digital audio signal inputted by the first digital input channel and conversion unit of protocol carries out stereo process and the 5th digital signal is exported by the second digital output channel, or second downmixing unit export the 5th digital signal to conversion unit of protocol, make its finally via first monitor interface export.
A kind of audio frequency processing system, comprises digital microphone, and audio processing equipment; Audio processing equipment has the second digital audio interface, second digital audio interface is connected with the digital audio interface signal of telecommunication of digital microphone, audio processing equipment is received from the digital audio and video signals of digital microphone to record or play operation to it by the second digital audio interface, or audio processing equipment sends digital audio and video signals by the second digital audio interface to digital microphone.
Compared with prior art, the utility model has following beneficial effect:
A kind of digital microphone, and a kind of audio frequency processing system, by arranging AD conversion unit and conversion unit of protocol, the external voice signal that pickup unit picks up can be finally converted to by digital microphone of the present utility model can for the second digital signal of digital audio interface transmission, this second digital signal is utilized to carry out the transmission of sound, add the antijamming capability in transfer voice process, make further not have a large amount of noises in the final signal formed, thus reduce the distortion factor of signal, improve the acoustical quality of microphone.
Accompanying drawing explanation
Fig. 1 is the structure chart of the digital microphone of an embodiment.
Fig. 2 is the structure chart of the digital microphone of another embodiment.
Fig. 3 is common mode choke structured flowchart in an embodiment.
Fig. 4 is filter circuit construction block diagram in another embodiment.
Fig. 5 is the structure chart of the digital microphone of an embodiment again.
Fig. 6 is the digital microphone of an embodiment and the structured flowchart of another digital microphone cascade.
Fig. 7 is the digital microphone of another embodiment and the structured flowchart of another digital microphone cascade.
Embodiment
Below with reference to accompanying drawing, elaboration is further given to each embodiment of the present utility model.
As previously mentioned, along with the increase day by day of the application scenarios of microphone, and the increase day by day of the requirement of user's microphone tonequality, spy proposes a kind of digital microphone can improving the acoustical quality of microphone, better to put goods on the market in application.
Refer to Fig. 1, in one embodiment, a kind of digital microphone 100 comprises: pickup unit 10, AD conversion unit 20, conversion unit of protocol 30 and digital audio interface 40.
In the present embodiment, external voice signal, for picking up external voice signal, is converted to the first analog signal by the pickup unit 10 of digital microphone 100.In the present embodiment, pickup unit 10 comprises miaow core, and external voice signal, for picking up external voice signal, is converted to the first analog signal by miaow core after acoustic-electric conversion; More optimizedly, pickup unit 10 also comprises amplifying unit 11, and this amplifying unit 11 signal of telecommunication is connected between miaow core and AD conversion unit 20, and the analog signal for exporting miaow core amplifies rear output first analog signal.The analog signal amplitude formed after acoustic-electric conversion by external voice signal due to miaow core is less, if be directly inputted to AD conversion unit 20, require higher to AD conversion unit 20 input voltage range, amplifying unit 11 between miaow core and AD conversion unit 20, rear output first analog signal is amplified to AD conversion unit 20 to the analog signal that miaow core exports, to reduce the requirement to AD conversion unit 20 input voltage range, the basis ensureing digital microphone 100 audio reduces cost.
Above-mentioned miaow core is removably installed in the shell of digital microphone 100.Because miaow core is removably installed in the shell of digital microphone 100, this is conducive to user carries out miaow core replacing according to the application scenarios of reality, to meet the requirement of on-the-spot microphone tonequality better.
AD conversion unit 20 is for being converted to the first digital signal by the first analog signal.AD conversion unit 20 can be analog to digital converter (A/D converter), also can be the chip being integrated with analog-digital conversion function.In the present embodiment, the first analog signal is converted to and meets I2S(Inter-ICSound by AD conversion unit 20) the first digital signal of agreement.
Conversion unit of protocol 30 is for being converted to the second digital signal met with the digital audio interface agreement of digital audio interface 40 adaptation by the first digital signal.Digital audio protocol can be AES agreement (also referred to as AES/EBU agreement), SPDIF agreement, ADAT agreement, I2S agreement, TDM agreement or MIDI agreement.
Digital audio interface 40 and conversion unit of protocol 30 are electrically connected, for exporting the second digital signal to external digital audio frequency apparatus.In the present embodiment, the agreement of digital audio interface adaptation is SPDIF agreement, correspondingly, the second digital signal meets SPDIF agreement, and what conversion unit of protocol 30 realized is then the function the first digital signal meeting I2S agreement being converted to the second digital signal meeting SPDIF agreement.
The type of digital audio interface 40 can be at least one in AES audio interface, SPDIF interface, coaxial audio interface and optical fiber audio interface.Second digital signal all can be transmitted and export external digital audio frequency apparatus in those digital audio interfaces 40, such as, and another digital microphone or audio amplifier.In the present embodiment, the quantity of digital audio interface 40 is multiple, and the type of the plurality of digital audio interface 40 can be identical or different.Such as, digital microphone 100 can have two AES audio interface simultaneously, also can have AES audio interface, coaxial three digital audio interfaces 40 such as audio interface and optical fiber audio interface simultaneously.
In other embodiments, digital microphone 100 also comprises the first monitoring interface 50.
Above-mentioned first monitors interface 50 by described first analog signal output to outside audiomonitor, or as shown in Figure 2, digital audio interface 40 also for receiving external digital audio signal, and is sent to conversion unit of protocol 30; External digital audio signal is converted to three digital audio and video signals suitable with AD conversion unit 20 by conversion unit of protocol 30, and is sent to AD conversion unit 20; AD conversion unit 20 and first is monitored interface 50 signal of telecommunication and is connected, and for three digital signal is converted to the second analog signal, and exports it to outside audiomonitor by the first monitoring interface 50.
In other embodiments, above-mentioned first monitors interface 50 can be set at least two, wherein at least one first monitor interface 50 for will above-mentioned first analog signal output to outside audiomonitor, wherein at least another first monitors interface 50 for by above-mentioned second analog signal output extremely outside audiomonitor.
In other embodiments, digital microphone 100 also comprises a listening key, and above-mentioned first monitors interface 50 under the control of listening key by above-mentioned first analog signal or the second analog signal output extremely outside audiomonitor.Such as, listening key adopts toggle switch to realize, and when toggle switch side gating, first monitors interface 50 by above-mentioned first analog signal output to outside audiomonitor; When toggle switch opposite side gating, first monitors interface 50 by above-mentioned second analog signal output to outside audiomonitor.
Further, if digital audio interface 40 is coaxial audio interface, external digital audio frequency apparatus 80 is connected by the coaxial audio interface of coaxial cable and this, between coaxial audio interface and conversion unit of protocol 30, arrange common mode choke, the radiation produced in order to suppress coaxial cable.As shown in Figure 3, in one embodiment, the primary and secondary turn ratio of common mode choke is 1:1, and one end and the conversion unit of protocol 30 of common mode choke are electrically connected, and its other end and digital audio interface 40 are electrically connected.By this common mode choke, further increase the antijamming capability of digital microphone 100, improve the tonequality of digital microphone 100.
Further, if digital audio interface 40 is coaxial audio interface, one filter circuit is set between coaxial audio interface and conversion unit of protocol 30, this filter circuit has filter action to high-frequency crosstalk, the interference signal that can be produced by ground wire coupled modes in order to filtering, and then reach the object preventing grounding interference.This filter circuit can be capacitance resistance parallel filtering circuit, resistance-inductance series filtering circuit etc.As shown in Figure 4, in one embodiment, filter circuit comprises the series circuit and the second electric capacity C2 in parallel with this series circuit that are formed by the first resistance R1, the first electric capacity C1, and the input of this filter circuit receives the second digital signal, and its output and digital audio interface 40 are electrically connected.By this filter circuit, further increase the antijamming capability of digital microphone 100, improve the tonequality of digital microphone 100.
By arranging AD conversion unit 20 and conversion unit of protocol 30 in above-mentioned digital microphone 100, the external voice signal that pickup unit 10 can be picked up by this digital microphone 100 is finally converted to the second digital signal can transmitted for digital audio interface 40, this second digital signal is utilized to carry out the transmission of sound, add the antijamming capability in transfer voice process, thus reduce the distortion factor of signal, improve the acoustical quality of microphone.
In addition, AD conversion unit 20, conversion unit of protocol 30 and digital audio interface 40 form the main body of digital microphone 100, and pickup unit 10 is removably electrically connected with this main body.Because this pickup unit 10 is removably installed in the shell of digital microphone 100, this is conducive to user carries out pickup unit 10 replacing according to the application scenarios of reality, to meet the requirement of on-the-spot microphone tonequality better.
Refer to Fig. 5, in one embodiment, digital microphone 100 also comprises: audio effect processing unit 21.Wherein, audio effect processing unit 21 is connected between AD conversion unit 20 and conversion unit of protocol 30, the first digital signal for being formed AD conversion unit 21 forms the 4th digital signal after carrying out audio effect processing, and export the 4th digital signal to conversion unit of protocol 30, through being exported by digital audio interface 40 after being converted to the second digital signal to make the 4th digital signal by conversion unit of protocol 30.
This audio effect processing comprises the first digital signal is carried out to reverberation, electroacoustic, echo, around process such as, the change of voice, modified tones, is conducive to the tonequality improving digital microphone 100 further, enriches the application scenarios of digital microphone 100.
In the present embodiment, digital microphone 100 also comprises: power supply unit, needs all the other each modules of powering all to be electrically connected in this power supply unit and digital microphone 100.Wherein, power supply unit is used for providing digital microphone 100 1 supply voltage, normally works to make digital microphone 100.This power supply unit can be battery, also can be voltage boosting and stabilizing circuit or decompression voltage regulator, to power to the miaow core in digital microphone 100 and other modules, thus digital microphone 100 can normally be worked.It is worth mentioning that, power supply unit also can be arranged in digital microphone 100, but is arranged on outside digital microphone 100, as charger baby etc. as external power supply, realize providing supply voltage to digital microphone 100 with this, digital microphone 100 can normally be worked.
In the aforementioned embodiment, in other modules presented in Fig. 5 and Fig. 1 the module class of digital microphone 100 seemingly, this is no longer going to repeat them.
As shown in Figure 6, in one embodiment, digital microphone 101 also comprises: the first downmixing unit 70, first inert stage connecting port 60, second inert stage connecting port 61 and second monitors interface 51.Wherein:
First inert stage connecting port 60 is integrated with the first analog input channel and the first analog output channel.
Second inert stage connecting port 61 is integrated with the second analog input channel and the second analog output channel.
As shown in Figure 6, digital microphone 102 comprises the first inert stage connecting port 62, second inert stage connecting port 63, the second inert stage connecting port 61 of digital microphone 101 is connected with digital microphone 102 first inert stage connecting port 62, achieves the simulation cascade of digital microphone 101 and digital microphone 102.
First downmixing unit 70 is connected between pickup unit 10 and AD conversion unit 20, and be electrically connected with first, second inert stage connecting port 60,61 of digital microphone 101, export the 3rd analog signal after the first analog signal for being formed the external analog audio signal inputted by the first analog input channel and pickup unit 10 carries out stereo process and the 3rd analog signal is exported by the second analog output channel, or, make it finally export via digital audio interface 40 the 3rd analog signal output to AD conversion unit 20.
Second monitors interface 51 is electrically connected with the first downmixing unit 70 and outside audiomonitor 90 respectively, and the second analog signal transmission exported to make the first downmixing unit 70 is to outside audiomonitor 90.
Further, first, second inert stage connecting port 60,61 and second is monitored interface 51 and is 3.5mm audio interface, especially, first, second inert stage connecting port 60,61 is 4 segmentation 3.5mm audio interface, and the second monitoring interface 51 is 3 segmentations or 4 segmentation 3.5mm audio interface.
Particularly, the first inert stage connecting port 60 of digital microphone 101 receives external analog audio signal and the first analog input channel via the first inert stage connecting port 60 inputs to the first downmixing unit 70.The 3rd analog signal is formed after the first analog signal stereo process that this external analog audio signal and pickup unit 10 export by this first downmixing unit 70,3rd analog signal can be inputed to AD conversion unit 20, again through the audio effect processing of audio effect processing unit 21, after the protocol conversion of conversion unit of protocol 30, finally export digital audio interface 40 to.Or, the 3rd analog signal is formed after the first analog signal stereo process that this external analog audio signal and pickup unit 10 export by this first downmixing unit 70, the second inert stage connecting port 61 is transferred to through the second analog output channel, be connected by the signal of telecommunication of this second inert stage connecting port 61 with the first inert stage connecting port 62 of another digital microphone 102, make this second analog signal be passed to another digital microphone 102.
Certainly, in other embodiments, the direction of transfer of the 3rd analog signal also can be transfer to digital microphone 101 from digital microphone 102, now, external analog audio signal is inputted by the second analog input channel of digital microphone 102 second inert stage connecting port 63, a cascaded switch can be set on digital microphone 102 housing, the first analog signal to the pickup unit 10 of outside simulated audio signal and digital microphone 102 inputs is selected to carry out stereo process by this cascaded switch, or external analog audio signal does not carry out audio mixing with the first analog signal after inputing to the first downmixing unit 70 of digital microphone 102, directly export external analog audio signal to digital microphone 101 by the first analog output channel of digital microphone 102.It is easily understood that also arrange a cascaded switch on digital microphone 101 housing, select whether stereo process is carried out to the first analog signal and external analog audio signal by this cascaded switch, repeat no more herein.
As shown in Figure 7, in one embodiment, digital microphone 101 also comprises the second downmixing unit 71.Digital audio interface 40 comprises primary digitals stage connecting port 41 and the second digital stage connecting port 42.Wherein:
Primary digitals stage connecting port 41 is integrated with the first digital input channel and the first digital output channel.
Second digital stage connecting port 42 is integrated with the second digital input channel and the second digital output channel.
As shown in Figure 7, digital microphone 101 second digital stage connecting port 42 and digital microphone 102 primary digitals stage connecting port 43 are electrically connected.
Second downmixing unit 71 is connected with conversion unit of protocol 30 signal of telecommunication, and be electrically connected with first, second digital stage connecting port 41,42, export the 5th digital signal after the second digital signal for being formed the external digital audio signal inputted by the first digital input channel and conversion unit of protocol 30 carries out stereo process and the 5th digital signal is exported by the second digital output channel, or described second downmixing unit 71 exports described 5th digital signal to described conversion unit of protocol 30, make it finally monitor interface 50 via described first and export.
Further, first, second digital stage connecting port 41,42 comprises AES audio interface, SPDIF interface, coaxial audio interface and optical fiber audio interface.
Particularly, the primary digitals stage connecting port 41 of digital microphone 101 receives external digital audio signal and inputs to the second downmixing unit 71 via the first digital input channel.After the second digital signal that this external digital audio signal and conversion unit of protocol 30 are formed is carried out stereo process by this second downmixing unit 71, export the 4th digital signal and transfer to the second digital stage connecting port 42 through the second digital output channel, be connected with the signal of telecommunication of the primary digitals stage connecting port 43 of another digital microphone 102 by this second digital stage connecting port 42, make the 4th digital signal transfers to another digital microphone 102.
Certainly, in other embodiments, the direction of transfer of the 4th digital signal also can be transfer to digital microphone 101 from digital microphone 102, now, external digital audio signal inputs to the second downmixing unit 71 of digital microphone 102 by the second digital input channel of digital microphone 102, digital microphone 102 housing arranges a cascaded switch, the second digital signal to the conversion unit of protocol 30 of outside digital audio and video signals and digital microphone 102 exports is selected to carry out stereo process by this cascaded switch, or stereo process is not carried out to the second digital signal that the conversion unit of protocol 30 of outside digital audio and video signals and digital microphone 102 exports, directly directly export external digital audio signal to digital microphone 101 by the first output channel of digital microphone 102.
By above-mentioned subtending port, make between multiple digital microphone except the music that terminal equipment is play mutually can be transmitted, multiple digital microphone can also be made to gather the audio signals such as such as sound simultaneously, even and then make external limited electrical power cannot give each digital microphone provide in the occasion of supply voltage, also can meet the sight that multiple digital microphone uses simultaneously.Such as, chorus in KTV, or, teleconference etc. in many ways.
A kind of audio frequency processing system, comprises digital microphone, and audio processing equipment; Audio processing equipment has the second digital audio interface, second digital audio interface is connected with the digital audio interface signal of telecommunication of digital microphone, audio processing equipment is received from the digital audio and video signals of digital microphone to record or play operation to it by the second digital audio interface, or audio processing equipment sends digital audio and video signals by the second digital audio interface to digital microphone.
Foregoing; be only preferred embodiment of the present utility model; not for limiting embodiment of the present utility model; those of ordinary skill in the art are according to central scope of the present utility model and spirit; can carry out corresponding flexible or amendment very easily, therefore protection range of the present utility model should be as the criterion with the protection range required by claims.
Claims (10)
1. a digital microphone, is characterized in that, comprising: pickup unit, AD conversion unit, conversion unit of protocol and digital audio interface; Wherein,
Described external voice signal for picking up external voice signal, and is converted to the first analog signal by described pickup unit;
Described AD conversion unit is used for described first analog signal to be converted to the first digital signal;
Described conversion unit of protocol is used for described first digital signal to be converted to the second digital signal, and described second digital signal meets the digital audio interface agreement with described digital audio interface adaptation;
Described digital audio interface and described conversion unit of protocol are electrically connected, for exporting described second digital signal to external digital audio frequency apparatus.
2. digital microphone as claimed in claim 1, it is characterized in that, described digital microphone also comprises the first monitoring interface;
Described first monitors interface by described first analog signal output to outside audiomonitor; And/or
Described digital audio interface also for receiving external digital audio signal, and is sent to conversion unit of protocol; External digital audio signal is converted to three digital audio and video signals suitable with described AD conversion unit by described conversion unit of protocol, and is sent to described AD conversion unit; Described AD conversion unit and described first is monitored interface electric signals and is connected, and for described three digital signal is converted to the second analog signal, and exports it to outside audiomonitor by described first monitoring interface.
3. digital microphone as claimed in claim 2, it is characterized in that, described digital microphone also comprises a listening key, and described first monitors interface under the control of described listening key by described first analog signal or described second analog signal output extremely outside audiomonitor.
4. digital microphone as claimed in claim 1, is characterized in that, described digital audio interface comprises at least one in AES audio interface, coaxial audio interface and optical fiber audio interface.
5. digital microphone as claimed in claim 1, it is characterized in that, described digital audio interface is coaxial audio interface, itself and described external digital audio frequency apparatus are interconnected by coaxial cable, common mode choke is set between described coaxial audio interface and described conversion unit of protocol, in order to the radiation suppressing described coaxial cable to produce; Or
Described digital audio interface is coaxial audio interface, arranges a filter circuit, the interference signal produced by ground wire coupled modes in order to filtering between described coaxial audio interface and conversion unit of protocol.
6. digital microphone as claimed in claim 1, it is characterized in that, described AD conversion unit, conversion unit of protocol and digital audio interface form the main body of described digital microphone, and described pickup unit is removably electrically connected with described main body.
7. digital microphone as claimed in claim 1, it is characterized in that, described digital microphone also comprises:
Audio effect processing unit, be connected between described AD conversion unit and conversion unit of protocol, the first digital signal for being formed described AD conversion unit forms the 4th digital signal after carrying out audio effect processing, and export described 4th digital signal to described conversion unit of protocol, through being exported by described digital audio interface after being converted to described second digital signal to make described 4th digital signal by described conversion unit of protocol.
8. as the digital microphone in claim 1 ~ 7 as described in any one, it is characterized in that, described digital microphone also comprises: the first downmixing unit, the first inert stage connecting port, the second inert stage connecting port and second monitor interface; Wherein,
Described first inert stage connecting port is integrated with the first analog input channel and the first analog output channel;
Described second inert stage connecting port is integrated with the second analog input channel and the second analog output channel;
Described first downmixing unit is connected between described pickup unit and AD conversion unit, and be electrically connected with first, second inert stage connecting port described, export the 3rd analog signal after the first analog signal for being formed the external analog audio signal inputted by described first analog input channel and described pickup unit carries out stereo process and described 3rd analog signal is exported by described second analog output channel, or, make it finally export via described digital audio interface described 3rd analog signal output to described AD conversion unit;
Described second monitors interface is electrically connected with described first downmixing unit and outside audiomonitor respectively, and the second analog signal transmission exported to make described first downmixing unit is to described outside audiomonitor.
9. digital microphone as claimed in claim 2, it is characterized in that, described digital microphone also comprises the second downmixing unit; Described digital audio interface comprises primary digitals stage connecting port and the second digital stage connecting port; Wherein,
Described primary digitals stage connecting port is integrated with the first digital input channel and the first digital output channel;
Described second digital stage connecting port is integrated with the second digital input channel and the second digital output channel;
Described second downmixing unit is connected with the conversion unit of protocol signal of telecommunication, and be electrically connected with first, second digital stage connecting port described, export the 5th digital signal after the second digital signal for being formed the external digital audio signal inputted by described first digital input channel and described conversion unit of protocol carries out stereo process and described 5th digital signal is exported by described second digital output channel, or described second downmixing unit exports described 5th digital signal to described conversion unit of protocol, make it finally monitor interface via described first and export.
10. an audio frequency processing system, is characterized in that, comprises as the digital microphone in claim 1 ~ 9 as described in any one, and audio processing equipment;
Described audio processing equipment has the second digital audio interface, described second digital audio interface is connected with the digital audio interface signal of telecommunication of described digital microphone, described audio processing equipment is received from the digital audio and video signals of described digital microphone to record or play operation to it by described second digital audio interface, or described audio processing equipment by described second digital audio interface to described digital microphone transmission digital audio and video signals.
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| CN201520617160.0U CN205017505U (en) | 2015-08-17 | 2015-08-17 | Digit microphone and audio processing system |
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| CN201520617160.0U CN205017505U (en) | 2015-08-17 | 2015-08-17 | Digit microphone and audio processing system |
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