CN212970027U - Low-noise pickup system of digital microphone - Google Patents
Low-noise pickup system of digital microphone Download PDFInfo
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- CN212970027U CN212970027U CN202022209212.4U CN202022209212U CN212970027U CN 212970027 U CN212970027 U CN 212970027U CN 202022209212 U CN202022209212 U CN 202022209212U CN 212970027 U CN212970027 U CN 212970027U
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Abstract
The utility model discloses a low noise digital microphone pickup system, including microphone input module, microphone input module electric connection has low noise microphone amplifier, low noise microphone amplifier electric connection has low noise microphone bias circuit, low noise microphone bias circuit electric connection earphone power amplifier's input, earphone power amplifier's output electric connection has stereo simulation output module. The utility model discloses a digital audio signal processor can realize realizing audio frequency processing functions such as audio frequency equalizer, wind sound elimination, audio frequency dynamic range compression, can realize the configuration that various audios were handled through data or procedure of modifying FLASH, can directly drive 16ohm earphones through earphone power amplifier, need not stopping electric capacity, can satisfy the demand of various USB earphone products, promotes product reliability and uniformity, the production of being convenient for more.
Description
Technical Field
The utility model belongs to the technical field of the microphone, specifically be low noise digital microphone pickup system.
Background
The microphone, known as a microphone, is translated from English and is also called a microphone and a microphone. Microphones are energy conversion devices that convert sound signals into electrical signals, and are classified into moving-coil, condenser, electret, and recently emerging silicon micro-microphones, as well as liquid microphones and laser microphones, and most of the microphones are electret condenser microphones, which operate on the principle of using a polymeric material diaphragm with permanent charge isolation;
the current low-noise digital microphone pickup system has poor effect and poor reliability when processing audio, and the low-noise digital microphone pickup system can only be matched with a specific interface, has no consistency and is inconvenient for production.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve the problem among the background art, provide low noise digital microphone pickup system.
The utility model adopts the technical scheme as follows:
low noise digital microphone pickup system, including microphone input module, microphone input module electric connection has low noise microphone amplifier, low noise microphone amplifier electric connection has low noise microphone bias circuit, low noise microphone bias circuit electric connection earphone power amplifier's input, earphone power amplifier's output electric connection has stereo analog output module, low noise microphone bias circuit still electric connection has digital audio signal processor, clock oscillator and USB function controller.
Preferably, the USB function controller is electrically connected to a single USB audio codec, and the single USB audio codec is electrically connected to a USB transceiver.
Preferably, the USB transceiver supports USB HID device class 1.11 and audio class 1.0.
Preferably, the clock oscillator integrates eight GPIOs.
Preferably, the low-noise microphone bias circuit is electrically connected with a wireless network module.
Preferably, the wireless network module can be one or any combination of a 4G network, a 5G network, a WiFi network or a local area network.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
the utility model discloses in, can realize through digital audio signal processor that audio frequency processing functions such as audio frequency equalizer, wind sound elimination, audio frequency dynamic range compression can realize the configuration that various audios were handled through data or procedure of modifying FLASH, can directly drive 16ohm earphones through earphone power amplifier, need not stopping electric capacity, can satisfy the demand of various USB earphone products, promote product reliability and uniformity, the production of being convenient for more.
Drawings
Fig. 1 is a system block diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Referring to fig. 1, the low noise digital microphone pickup system includes a microphone input module electrically connected with a low noise microphone amplifier, the low-noise microphone amplifier is electrically connected with a low-noise microphone bias circuit which is electrically connected with the input end of the earphone power amplifier, the output end of the earphone power amplifier is electrically connected with a stereo analog output module, the low-noise microphone bias circuit is also electrically connected with a digital audio signal processor, a clock oscillator and a USB function controller, the USB function controller is electrically connected with a single USB audio codec, the single USB audio codec is electrically connected with a USB transceiver, the USB transceiver supports USB HID device class 1.11 and Audio class 1.0, and the clock oscillator integrates eight GPIOs.
By adopting the technical scheme:
can realize audio frequency processing functions such as audio frequency equalizer, wind sound elimination, audio frequency dynamic range compression through digital audio signal processor, can realize the configuration that various audio was handled through data or procedure in the modification FLASH, can directly drive 16ohm earphone through earphone power amplifier, need not blocking the direct current electric capacity, can satisfy the demand of various USB earphone products, promote product reliability and uniformity, the production of being convenient for more.
The low-noise microphone bias circuit is electrically connected with a wireless network module, and the wireless network module can be one or any combination of a 4G network, a 5G network, a WiFi network or a local area network.
By adopting the technical scheme:
the low-noise microphone biasing circuit can realize wireless control through the wireless network module, so that the low-noise digital microphone pickup system is convenient to use.
The working principle of the microphone pickup system is that, referring to fig. 1, a microphone input module in a low-noise digital microphone pickup system can receive sound wave signals, the sound wave signals are converted into electric signals which are transmitted to a low-noise microphone amplifier, the low-noise microphone amplifier transmits the electric signals to a low-noise microphone bias circuit, the low-noise microphone bias circuit transmits the electric signals to a digital audio signal processor, the audio processing functions of existing audio frequency equalizer, wind sound elimination, audio frequency dynamic range compression and the like are achieved, configuration of various sound effect processing can be achieved by modifying data or programs in FLASH, a 16ohm earphone can be directly driven through an earphone power amplifier, and a blocking capacitor is not needed.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. Low noise digital microphone pickup system, including microphone input module, its characterized in that: the earphone comprises a microphone input module, a microphone bias circuit, a microphone amplifier, a digital audio signal processor, a clock oscillator and a USB function controller, wherein the microphone input module is electrically connected with the low-noise microphone amplifier, the low-noise microphone amplifier is electrically connected with the low-noise microphone bias circuit, the low-noise microphone bias circuit is electrically connected with the input end of the earphone power amplifier, the output end of the earphone power amplifier is electrically connected with the stereo analog output module, and the low-noise microphone bias circuit is also electrically connected with the digital audio signal processor, the clock oscillator and the USB function controller.
2. The low noise digital microphone pickup system of claim 1 wherein: the USB function controller is electrically connected with a single USB audio codec, and the single USB audio codec is electrically connected with a USB transceiver.
3. The low noise digital microphone pickup system of claim 2 wherein: the USB transceiver supports USB HID device class 1.11 and Audio class 1.0.
4. The low noise digital microphone pickup system of claim 3 wherein: the clock oscillator integrates eight GPIOs.
5. The low noise digital microphone pickup system of claim 4 wherein: the low-noise microphone bias circuit is electrically connected with the wireless network module.
6. The low noise digital microphone pickup system of claim 5 wherein: the wireless network module can be any combination of one or more of a 4G network, a 5G network, a WiFi network or a local area network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022209212.4U CN212970027U (en) | 2020-09-30 | 2020-09-30 | Low-noise pickup system of digital microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022209212.4U CN212970027U (en) | 2020-09-30 | 2020-09-30 | Low-noise pickup system of digital microphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212970027U true CN212970027U (en) | 2021-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022209212.4U Active CN212970027U (en) | 2020-09-30 | 2020-09-30 | Low-noise pickup system of digital microphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212970027U (en) |
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2020
- 2020-09-30 CN CN202022209212.4U patent/CN212970027U/en active Active
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