CN205029850U - Microphone adapter - Google Patents

Microphone adapter Download PDF

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Publication number
CN205029850U
CN205029850U CN201520864660.4U CN201520864660U CN205029850U CN 205029850 U CN205029850 U CN 205029850U CN 201520864660 U CN201520864660 U CN 201520864660U CN 205029850 U CN205029850 U CN 205029850U
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microphone
interface
digital
audio
channel
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徐文波
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徐文波
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Abstract

The utility model provides a microphone adapter, a serial communication port, which comprises an outer shell. The microphone interface for insert outside microphone, audio frequency processing circuit board is provided with codec, protocol converting unit and battery, codec's analog -to -digital conversion passageway with microphone interface electric connection, be used for with microphone interface outlet's an analog audio signal conversion becomes a digital audio signal, protocol converting unit with codec's analog -to -digital conversion passageway electric connection, be used for with a digital audio signal converts the 2nd digital audio signal to, digital audio interface, with protocol converting unit electric connection including output channel, is used for supplying the 2nd digital audio signal exports outside audio equipment to. Can be so that traditional simulation microphone access microphone adapter, digital output audio signal to the digit mode is transmitted, avoids signal loss and electromagnetic interference and grounding interference scheduling problem that the analogue transmission mode brought.

Description

Microphone adapter
Technical field
The utility model relates to audio frequency apparatus technical field, particularly relates to a kind of microphone adapter.
Background technology
On the market, simulation microphone occupies most microphone market, and simulation microphone exports simulated audio signal, and audio signal is transmitted in an analog fashion.But along with the requirement of user to sound quality and extraneous antijamming capability more and more higher, this simulated audio signal cannot adapt to the remote high-quality transmission of faint audio signal, such as large stadium, the distance transmitted is needed usually to reach hundreds of rice far away, adopt traditional analogue transmission mode, be difficult to solve loss of signal and the difficult problem such as electromagnetic interference and connection interference.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of microphone adapter, make traditional simulation microphone access, outputting digital audio signal, audio signal is transmitted in a digital manner, the loss of signal avoiding analogue transmission mode to bring and the problem such as electromagnetic interference and connection interference.The utility model is achieved in that a kind of microphone adapter, comprises
Shell;
At least one microphone interface, is arranged on described shell, for accessing external speaker;
Codec, analog-to-digital conversion passage and the described microphone interface of described codec are electrically connected, for converting the input from described microphone interface first simulated audio signal to first digital audio and video signals;
Conversion unit of protocol, the analog-to-digital conversion passage of itself and described codec is electrically connected, for converting described first digital audio and video signals to second digital audio and video signals;
Digital audio interface, is arranged on described shell, is electrically connected, includes output channel with described conversion unit of protocol, for exporting outer audio equipment to for described second digital audio and video signals.
Further, described microphone adapter comprises two microphone interfaces, the analog-to-digital conversion passage of described codec comprises L channel and R channel, and described two microphone interfaces and the described L channel of analog-to-digital conversion passage and the electrical connection of R channel are selected from as any one under type, concrete:
First kind of way: described two microphone interfaces are electrically connected with the L channel of described analog-to-digital conversion passage and R channel respectively, enters L channel, the R channel of described analog-to-digital conversion passage respectively from the audio signal of described two microphone interfaces input;
The second way: described microphone adapter also comprises downmixing unit, described two microphone interfaces are electrically connected with the L channel of described analog-to-digital conversion passage and R channel respectively by described downmixing unit, are divided into from the audio signal of described two microphone interfaces input L channel, the R channel that two paths of signals enters described analog-to-digital conversion passage respectively after described downmixing unit audio mixing;
The third mode: described microphone adapter also comprises downmixing unit, input selector switch, described two microphone interfaces and described input selector switch are electrically connected, described two microphone interfaces are also electrically connected by described downmixing unit and input selector switch, described input selector switch is for selecting the L channel being entered described analog-to-digital conversion passage from the audio signal of described two microphone interfaces input by described input selector switch respectively, R channel or be divided into two paths of signals to enter described analog-to-digital conversion passage respectively L channel by described input selector switch from the audio signal of described two microphone interfaces input after described downmixing unit audio mixing, R channel.
Further, described shell is provided with monitoring interface, described digital audio interface includes input channel, 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 codec by described conversion unit of protocol, and is sent to the dac channel of described codec; Dac channel and the described monitoring interface of described codec are electrically connected, and for described three digital signal is converted to the second simulated audio signal, and export it to outside audiomonitor by described monitoring interface.
Further, described shell is provided with listening key, the annexation between described listening key and described two microphone interfaces, described monitoring interface is selected from as any one under type, concrete:
First kind of way: described two microphone interfaces are electrically connected by described listening key and described monitoring interface;
The second way: described two microphone interfaces are electrically connected by described downmixing unit, described listening key and described monitoring interface successively;
The third mode: described two microphone interfaces and described input selector switch are electrically connected, described two microphone interfaces are also electrically connected by described downmixing unit and described input selector switch, and described input selector switch is electrically connected by described listening key and described monitoring interface.
Further, described shell is also provided with external audio frequency equipment interface, described external audio frequency equipment interface and described monitoring interface and/or described digital audio interface are electrically connected, and export described monitoring interface to and/or by described digital audio interface output audio signal for the audio signal for outer audio equipment; Described external audio frequency equipment interface is also electrically connected with described microphone interface, and electrical connection is selected from as any one under type, concrete:
Further, described microphone adapter also comprises the first digital isolated location and/or the second digital isolated location, described first digital isolated location is electrically connected between the output channel of described conversion unit of protocol and described digital audio interface, and described second digital isolated location is electrically between described conversion unit of protocol and the input channel of described digital audio interface.
Further, described microphone adapter also comprises battery and regulating circuit, and described battery is powered by the rear each parts for described microphone adapter of described regulating circuit adjustment and external equipment.
Further, described digital audio interface is XLR interface, RCA interface, coaxial interface, optical fiber interface, USB interface or syllogic TRS interface.
Further, described microphone adapter also comprises control unit, described control unit and described codec, described conversion unit of protocol are electrically connected, and the manipulation for response external equipment sends to described codec, described conversion unit of protocol the sample rate that control command controls described codec, described conversion unit of protocol.
Further, described microphone adapter also comprises recording module, described recording module and described external audio frequency equipment interface, the analog-to-digital conversion path input of described codec, the dac channel output of described codec, in described monitoring interface, at least one is electrically connected, for to the described audio signal from the input of described external audio frequency equipment interface, the audio signal of the analog-to-digital conversion path input of described codec will be inputed to, the audio signal of the dac channel output output of described codec, by input to described monitoring interface audio signal at least one is recorded.
The beneficial effects of the utility model: provide a kind of microphone adapter, traditional simulation microphone can be made to access described microphone adapter, outputting digital audio signal, transmits in a digital manner, the loss of signal avoiding analogue transmission mode to bring and the problem such as electromagnetic interference and connection interference.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical solution of the utility model, be briefly described to the accompanying drawing used required in execution mode below, apparently, accompanying drawing in the following describes is only execution modes more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained from these accompanying drawings.
Fig. 1 is the first example structure block diagram of the utility model microphone adapter;
Fig. 2 is the second example structure block diagram of the utility model microphone adapter;
Fig. 3 is the 3rd example structure block diagram of the utility model microphone adapter;
Fig. 4 is the 4th example structure block diagram of the utility model microphone adapter;
Fig. 5 is the 5th example structure block diagram of the utility model microphone adapter;
Fig. 6 is the 6th example structure block diagram of the utility model microphone adapter;
Fig. 7 is the 7th example structure block diagram of the utility model microphone adapter.
Embodiment
Below in conjunction with the accompanying drawing in the utility model execution mode, the technical scheme in the utility model execution mode is clearly and completely described.The above is preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications are also considered as protection range of the present utility model.
Shown in figure 1, the utility model provides a kind of microphone adapter, described microphone adapter includes the shell (not showing in figure) for accommodating each parts of described microphone adapter, described shell is provided with microphone interface 1, can for simulation microphone traditional on the market access.The enclosure of described microphone adapter is provided with audio frequency processing circuit plate (not showing in figure), described audio frequency processing circuit plate there are codec 2, conversion unit of protocol 3, described codec 2 has analog-to-digital conversion passage, there is analog-digital conversion function, the first simulated audio signal inputted is converted to meet I2S (Inter-ICSound) agreement first digital audio and video signals by described microphone interface 1.
Being electrically connected with the output of the analog-to-digital conversion passage of described codec 2 of described conversion unit of protocol 3, converts described first digital audio and video signals to second digital audio and video signals; Described second digital audio and video signals meets and output interface---the digital audio protocol of digital audio interface 4 adaptation.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.
Described digital audio interface 4 is arranged on described shell, and input and described conversion unit of protocol 3 are electrically connected, and output is used for for outer audio equipment access.Described digital audio interface 4 has output channel, exports outer audio equipment by output channel to for described second digital audio and video signals.
The beneficial effect of the technical program: described microphone adapter can make traditional simulation microphone access, and outputting digital audio signal, transmits in a digital manner, the loss of signal avoiding analogue transmission mode to bring and the problem such as electromagnetic interference and connection interference.
In better embodiment, described microphone adapter comprises two microphone interfaces 1, the analog-to-digital conversion passage of described codec 2 comprises L channel and R channel, described two microphone interfaces 1 are selected from as any one under type with the described L channel of analog-to-digital conversion passage and the electrical connection of R channel, concrete:
First kind of way: described two microphone interfaces 1 are electrically connected with the L channel of described analog-to-digital conversion passage and R channel respectively, the audio signal inputted from described two microphone interfaces 1 enters L channel, the R channel of described analog-to-digital conversion passage respectively;
The second way: described microphone adapter also comprises downmixing unit 6, described two microphone interfaces 1 are electrically connected with the L channel of described analog-to-digital conversion passage and R channel respectively by described downmixing unit 6, and the audio signal inputted from described two microphone interfaces 1 is divided into L channel, the R channel that two paths of signals enters described analog-to-digital conversion passage respectively after described downmixing unit 6 audio mixing;
The third mode, shown in figure 2, described microphone adapter comprises two microphone interfaces 1, input selector switch 5 and downmixing unit 6, and microphone interface 1, for accessing external speaker, gathers extraneous voice signal.In the present embodiment, the audio signal flow direction inputted from two microphone interfaces 1 has two kinds of paths, the first: the audio signal inputted from described two microphone interfaces 1 enters L channel, the R channel of described analog-to-digital conversion passage respectively by described input selector switch 5, now, the audio signal inputted from two microphone interfaces 1 does not mix.The second: the audio signal inputted from described two microphone interfaces 1 is divided into two paths of signals (this two paths of signals is the same) enters described analog-to-digital conversion passage respectively L channel, R channel by described input selector switch 5 after described downmixing unit 6 audio mixing.Described input selector switch 5 is for selecting the first path or the second path.The beneficial effect of this technical scheme: two kinds of paths meet two kinds of use scenes, when a people uses, the access of two microphone interfaces 1 is positioned over two local external speakers, now adopt the first path, the audio signal inputted from two microphone interfaces 1 does not mix, formed stereo, make auditory effect better; When two people use, two microphone interfaces 1 access the external speaker of collection two personal voice, adopt the second path, by downmixing unit 6 audio mixing, reach the object of chorus.
Shown in figure 3, described shell is provided with and monitors interface 7, described digital audio interface 4 includes input channel, generally also having Grounding, for receiving external digital audio signal, and being sent to conversion unit of protocol 3; External digital audio signal is converted to three digital audio and video signals suitable with described codec 2 by described conversion unit of protocol 3, and is sent to the dac channel of described codec 2; Dac channel and the described monitoring interface 7 of described codec 2 are electrically connected, and for described three digital signal is converted to the second simulated audio signal, and export it to outside audiomonitor by described monitoring interface 7.The beneficial effect of the technical program: described microphone adapter also receives the audio signal sent from outer audio equipment, so, described microphone adapter can meet such a application scenarios, and " audio signal of external speaker collection is transferred to outer audio equipment by described microphone adapter and processes; such as audio effect processing etc.; then return to microphone adapter, and outside audiomonitor such as earphone can be accessed described monitoring interface 7 and monitor by user.”
Shown in figure 4, described shell is provided with listening key 8, the annexation between described listening key 8 and described two microphone interfaces 1, described monitoring interface 7 is selected from as any one under type, concrete:
First kind of way: described two microphone interfaces 1 are electrically connected with described monitoring interface 7 by described listening key 8, when listening key 8 closes, the audio signal inputted from described two microphone interfaces 1 exports outside audiomonitor such as earphone to by monitoring interface 7.
The second way: described two microphone interfaces 1 are electrically connected with described monitoring interface 7 by described downmixing unit 6, described listening key 8 successively, when listening key 8 closes, the audio signal inputted from described two microphone interfaces 1 exports outside audiomonitor such as earphone to by monitoring interface 7 after downmixing unit 6 audio mixing.
The third mode: described two microphone interfaces 1 are electrically connected with described input selector switch 5, described two microphone interfaces 1 are also electrically connected with described input selector switch 5 by described downmixing unit 6, described input selector switch 5 is electrically connected with described monitoring interface 7 by described listening key 8, when listening key 8 closes, the audio signal after described input selector switch 5 is selected exports outside audiomonitor such as earphone to by monitoring interface 7.
The beneficial effect of the technical program: when described digital audio interface 4 does not access outer audio equipment, closed listening key 8, the audio signal of external speaker collection enters described monitoring interface 7 by described listening key 8, exports outside audiomonitor such as earphone to by monitoring interface 7.When described digital audio interface 4 accesses outer audio equipment, disconnect listening key 8, then return described microphone adapter after the audio signal of external speaker collection then have passed through outer audio equipment and export outside audiomonitor such as earphone to by monitoring interface 7.
In better embodiment, described shell is also provided with the external audio frequency equipment interface 9 be electrically connected with described monitoring interface 7, described external audio frequency equipment interface 9 can supply mobile phone, panel computer, the outer audio equipment accesses such as personal computer, described external audio frequency equipment interface 9 exports described monitoring interface 7 to for the audio signal for outer audio equipment, such as, outer audio equipment exports the accompaniment of song, voice with external speaker collection is mixed to be transferred to and monitors interface 7, user hears the audio mixing of accompaniment and voice by outside audiomonitor, reach the object of k song whenever and wherever possible.Or described external audio frequency equipment interface 9 is electrically connected, by described digital audio interface 4 output audio signal with described digital audio interface 4.
Described external audio frequency equipment interface 9 is also electrically connected with described microphone interface 1, and electrical connection is selected from as any one under type, concrete:
First kind of way: described external audio frequency equipment interface 9 is electrically connected with described two microphone interfaces 1, exports outer audio equipment from the audio signal of described two microphone interfaces 1 input to by described external audio frequency equipment interface 9 and records;
The second way: shown in figure 5, described external audio frequency equipment interface 9 is electrically connected with described two microphone interfaces 1 by described downmixing unit 6, and the audio signal inputted from described two microphone interfaces 1 is recorded by exporting outer audio equipment to by described external audio frequency equipment interface 9 after described downmixing unit 6 audio mixing;
The third mode: described external audio frequency equipment interface 9 is electrically connected with described input selector switch, and the audio signal for exporting for input selector switch exports outer audio equipment to by described external audio frequency equipment interface 9 and records.
In better embodiment, shown in figure 6, described microphone adapter also comprises the first digital isolated location 10 and/or the second digital isolated location 11, described first digital isolated location 10 is electrically connected between described conversion unit of protocol 3 and the output channel of described digital audio interface 4, and described second digital isolated location 11 is electrically between described conversion unit of protocol 3 and the input channel of described digital audio interface 4.Digital isolated location 11 object of described first digital isolated location 10, second is the antijamming capability improving described microphone adapter, improves the tonequality of digital audio and video signals.
Described microphone adapter also includes the first amplifying unit 12 and/or the second amplifying unit 13, described first amplifying unit 12 is electrically connected with described monitoring interface 7, for rear to outside audiomonitor such as headphone monitor to the faint sound signal exporting described monitoring interface 7 to being carried out amplification; Described second amplifying unit 13 is electrically connected, for amplifying the faint sound signal of external speaker collection with described microphone interface 1.Further, described shell be also provided with microphone level setting switches (not showing in figure) and/or monitor level setting switches (not showing in figure); Described microphone level setting switches is arranged on the housing, is electrically connected, the volume of the faint sound signal gathered for regulating microphone with described first amplifying unit 12; Described monitoring level setting switches is arranged on the housing, is electrically connected, the volume of the audio signal listened to for regulating outside audiomonitor with described second amplifying unit 13.
In better embodiment, described microphone adapter also comprises battery (not showing in figure) and regulating circuit (not showing in figure), described battery by after the adjustment of described regulating circuit for each parts of described microphone adapter and external equipment are powered, be such as the power supply such as the chip of microphone adapter inner and the microphone of outside, outside musical instrument.General capacitor microphone needs the phantom power of 48V to power, but phantom power volume ratio is comparatively large, and needs external civil power, is not easy to open air and carries.The technical program uses battery to be adjusted to 48V by regulating circuit and powers for capacitor microphone, overcomes the problem that inconvenient open air is carried.
Described digital audio interface 4 is XLR interface (Cannon, three pins, one-in-and-one-out one ground connection) or two RCA interfaces, two optical fiber interfaces, (interface exports two coaxial interfaces, another interface inputs) or syllogic TRS interface (large three core interfaces, one section exports, one section inputs, one section of ground connection) or USB interface.
Shown in figure 7, described microphone adapter also includes control unit 14, described control unit 14 is electrically connected with described codec 2, described conversion unit of protocol 3, also with the electric connection such as the manipulation plate in the external world, sound card, mobile phone or computer, the manipulation that response is extraneous thus send the sample rate that control command controls described codec 2, described conversion unit of protocol 3 to described codec 2, described conversion unit of protocol 3.Further, described microphone adapter is also provided with sample rate display unit (not showing in figure), described sample rate display unit and described control unit 14 are electrically connected the sample rate for showing current described codec 2, described conversion unit of protocol 3.Further, described control unit 14 is also electrically connected with regulating circuit, described microphone adapter is also provided with the voltage display unit (not showing in figure) be electrically connected with described control unit 14, whether described control unit 14 detects regulating circuit and works, and shows current voltage.
In better embodiment, described microphone adapter also comprises recording module (not showing in figure), described recording module and described external audio frequency equipment interface 9, the analog-to-digital conversion path input of described codec 2, the dac channel output of described codec 2, in described monitoring interface 7, at least one is electrically connected, for to described audio signal (the such as mobile phone from the input of described external audio frequency equipment interface, mobile phone, panel computer, the accompaniment that personal computer exports), the audio signal (voice that external speaker gathers) of the analog-to-digital conversion path input of described codec will be inputed to, the audio signal (sound after the outer audio equipment process through being connected with described digital audio interface) of the dac channel output output of described codec, sound by the audio signal user's ear inputing to described monitoring interface is finally heard) at least one is recorded.
Obviously, above-described embodiment of the present utility model is only for the utility model example is clearly described, and is not the restriction to execution mode of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.All do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., within the protection range that all should be included in the utility model claim.

Claims (10)

1. a microphone adapter, is characterized in that, comprises
Shell;
At least one microphone interface, is arranged on described shell, for accessing external speaker;
Codec, analog-to-digital conversion passage and the described microphone interface of described codec are electrically connected, for converting the input from described microphone interface first simulated audio signal to first digital audio and video signals;
Conversion unit of protocol, the analog-to-digital conversion passage of itself and described codec is electrically connected, for converting described first digital audio and video signals to second digital audio and video signals;
Digital audio interface, is arranged on described shell, is electrically connected, includes output channel with described conversion unit of protocol, for exporting outer audio equipment to for described second digital audio and video signals.
2. microphone adapter according to claim 1, it is characterized in that, described microphone adapter comprises two microphone interfaces, the analog-to-digital conversion passage of described codec comprises L channel and R channel, described two microphone interfaces and the described L channel of analog-to-digital conversion passage and the electrical connection of R channel are selected from as any one under type, concrete:
First kind of way: described two microphone interfaces are electrically connected with the L channel of described analog-to-digital conversion passage and R channel respectively, enters L channel, the R channel of described analog-to-digital conversion passage respectively from the audio signal of described two microphone interfaces input;
The second way: described microphone adapter also comprises downmixing unit, described two microphone interfaces are electrically connected with the L channel of described analog-to-digital conversion passage and R channel respectively by described downmixing unit, are divided into from the audio signal of described two microphone interfaces input L channel, the R channel that two paths of signals enters described analog-to-digital conversion passage respectively after described downmixing unit audio mixing;
The third mode: described microphone adapter also comprises downmixing unit, input selector switch, described two microphone interfaces and described input selector switch are electrically connected, described two microphone interfaces are also electrically connected by described downmixing unit and described input selector switch, described input selector switch is for selecting the L channel being entered described analog-to-digital conversion passage from the audio signal of described two microphone interfaces input by described input selector switch respectively, R channel or be divided into two paths of signals to enter described analog-to-digital conversion passage respectively L channel by described input selector switch from the audio signal of described two microphone interfaces input after described downmixing unit audio mixing, R channel.
3. microphone adapter according to claim 2, is characterized in that, described shell is provided with monitoring interface, and described digital audio interface includes input channel, 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 codec by described conversion unit of protocol, and is sent to the dac channel of described codec; Dac channel and the described monitoring interface of described codec are electrically connected, and for described three digital signal is converted to the second simulated audio signal, and export it to outside audiomonitor by described monitoring interface.
4. microphone adapter according to claim 3, is characterized in that, described shell is provided with listening key, and the annexation between described listening key and described two microphone interfaces, described monitoring interface is selected from as any one under type, concrete:
First kind of way: described two microphone interfaces are electrically connected by described listening key and described monitoring interface;
The second way: described two microphone interfaces are electrically connected by described downmixing unit, described listening key and described monitoring interface successively;
The third mode: described two microphone interfaces and described input selector switch are electrically connected, described two microphone interfaces are also electrically connected by described downmixing unit and described input selector switch, and described input selector switch is electrically connected by described listening key and described monitoring interface.
5. microphone adapter according to claim 3, it is characterized in that, described shell is also provided with external audio frequency equipment interface, described external audio frequency equipment interface and described monitoring interface and/or described digital audio interface are electrically connected, and export described monitoring interface to and/or by described digital audio interface output audio signal for the audio signal for outer audio equipment; Described external audio frequency equipment interface is also electrically connected with described microphone interface, and electrical connection is selected from as any one under type, concrete:
First kind of way: described external audio frequency equipment interface and described two microphone interfaces are electrically connected, exports outer audio equipment from the audio signal of described two microphone interfaces input to by described external audio frequency equipment interface;
The second way: described external audio frequency equipment interface is electrically connected by described downmixing unit and described two microphone interfaces, the audio signal inputted from described two microphone interfaces is by exporting outer audio equipment to by described external audio frequency equipment interface after described downmixing unit audio mixing;
The third mode: described external audio frequency equipment interface and described input selector switch are electrically connected, exports outer audio equipment for the audio signal exported for input selector switch to by described external audio frequency equipment interface.
6. the microphone adapter according to claim 1-5 any one, it is characterized in that, described microphone adapter also comprises the first digital isolated location and/or the second digital isolated location, described first digital isolated location is electrically connected between the output channel of described conversion unit of protocol and described digital audio interface, and described second digital isolated location is electrically between described conversion unit of protocol and the input channel of described digital audio interface.
7. the microphone adapter according to claim 1-5 any one, it is characterized in that, described microphone adapter also comprises battery and regulating circuit, and described battery is powered by the rear each parts for described microphone adapter of described regulating circuit adjustment and external equipment.
8. the microphone adapter according to claim 1-5 any one, it is characterized in that, described microphone adapter also comprises control unit, described control unit and described codec, described conversion unit of protocol are electrically connected, and the manipulation for response external equipment sends to described codec, described conversion unit of protocol the sample rate that control command controls described codec, described conversion unit of protocol.
9. the microphone adapter according to claim 1-5 any one, is characterized in that, described digital audio interface is XLR interface, RCA interface, coaxial interface, optical fiber interface, USB interface or syllogic TRS interface.
10. microphone adapter according to claim 5, it is characterized in that, described microphone adapter also comprises recording module, described recording module and described external audio frequency equipment interface, the analog-to-digital conversion path input of described codec, the dac channel output of described codec, in described monitoring interface, at least one is electrically connected, for to the described audio signal from the input of described external audio frequency equipment interface, the audio signal of the analog-to-digital conversion path input of described codec will be inputed to, the audio signal of the dac channel output output of described codec, by input to described monitoring interface audio signal at least one is recorded.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108132770A (en) * 2017-12-13 2018-06-08 青岛海信移动通信技术股份有限公司 A kind of method and apparatus for carrying out audio frequency process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108132770A (en) * 2017-12-13 2018-06-08 青岛海信移动通信技术股份有限公司 A kind of method and apparatus for carrying out audio frequency process

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