CN218679351U - Audio signal optimization device with voice acquisition function - Google Patents
Audio signal optimization device with voice acquisition function Download PDFInfo
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- CN218679351U CN218679351U CN202222899812.7U CN202222899812U CN218679351U CN 218679351 U CN218679351 U CN 218679351U CN 202222899812 U CN202222899812 U CN 202222899812U CN 218679351 U CN218679351 U CN 218679351U
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Abstract
The utility model provides an audio signal optimizing device with voice acquisition, which relates to the technical field of voice communication and comprises a Bluetooth device, an upper computer, a man-machine interaction interface, a MCU, an audio chip, an input filter circuit, an output filter circuit, a MIC and a loudspeaker SPK; the Bluetooth device, the upper computer and the human-computer interaction interface are respectively in signal connection with the MCU, the Bluetooth device is used for transmitting audio data, and the upper computer is used for transmitting audio signals. The human-computer interaction interface is used for display and touch function operation, the MCU is a main processor, the audio chip is in signal connection with the MCU and used for optimizing audio signals, the input filter circuit is in signal connection with the MIC and the audio chip and used for blocking and weakening high-frequency signals, the MIC is used for inputting sound source data, and the output filter circuit is in signal connection with the audio chip and used for filtering the audio signals.
Description
Technical Field
The utility model relates to a voice call technical field especially relates to a take audio signal optimization device of pronunciation collection.
Background
The existing audio integrated circuit board has some defects, and mostly adopts a single mode MIC PHONE for acquiring voice, and audio acquisition cannot be carried out through a Bluetooth peripheral or an upper computer; and the existing audio integrated circuit board in the current market can not process the collected audio, so that the collected audio file is not played clearly or the sound is small.
In the prior art, the loudness of the audio signal is generally improved by increasing or decreasing the signal amplification factor, which easily causes the instantaneous peak signal to be clipped, thereby causing noise. On the other hand, when most of the cheap loudspeakers play signals with large low-frequency amplitude, obvious nonlinear distortion also occurs due to poor linearity of the loudspeakers, and further noise is played.
Chinese patent CN112242147a "a speech gain control method and computer storage medium" discloses a speech gain control method and computer storage medium, which instantaneously increases or decreases signal values and reduces noise amplitude after deep learning neural network model preprocessing, but this method will cause instantaneous peak signal topping and generate noise to affect the quality of audio signals.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a take audio signal optimization device of voice acquisition for solve prior art and carry out the problem that the voice acquisition produces the noise easily.
The technical scheme of the utility model is realized like this: the audio signal optimization device with the voice acquisition function comprises Bluetooth equipment, an upper computer, a human-computer interaction interface and an MCU (microprogrammed control unit);
the Bluetooth equipment is in signal connection with the MCU, the Bluetooth equipment is used for transmitting audio data, and the MCU is used as a main processor;
the upper computer is in signal connection with the MCU and is used for transmitting audio signals;
the human-computer interaction interface is in signal connection with the MCU and is used for displaying and touching functional operation;
it is characterized by also comprising: the audio frequency chip, input filter circuit and output filter circuit;
the audio chip is in signal connection with the MCU and is used for optimizing audio signals;
the input filter circuit is in signal connection with the audio chip and is used for blocking and weakening high-frequency signals;
the output filter circuit is in signal connection with the audio chip and is used for filtering the audio signal.
Preferably, the audio chip is used for realizing audio noise reduction, automatic gain control and signal peak compression on an audio signal and optimizing the quality of the audio signal.
Preferably, one end of the audio chip is in signal connection with the MCU and the input filter circuit, and the other end of the audio chip is in signal connection with the output filter circuit, so that peak compression is performed on the audio signal output by the input filter circuit, and the audio signal is compressed to be within a compression threshold value.
Preferably, the audio signal optimization device with voice acquisition further comprises an MIC;
and the MIC is in signal connection with the input filter circuit and is used for inputting sound source data.
Preferably, the MIC is a device to which audio source data is arbitrarily input.
Preferably, the sound source data is PCM data, and is a fixed point number of 8bit, 16bit or 32 bit.
Preferably, the input filter circuit comprises resistors R1 and R2 and capacitors C1, C2 and C3;
MIC input sound source data is to input filter circuit, with electric capacity C1's one end signal connection, electric capacity C1's the other end and resistance R1's one end signal connection, resistance R1's the other end and electric capacity C3's one end signal connection, electric capacity C3's the other end and resistance R2's one end signal connection, resistance R2's the other end and electric capacity C2's one end signal connection, electric capacity C2's the other end ground connection.
Preferably, the output filter circuit comprises resistors B1 and B2, capacitors C4 and C5, and a speaker SPK;
the audio chip inputs the processed audio signal into the output filter circuit, the audio chip is in signal connection with one end of the resistor B1, the other end of the resistor B1 is in signal connection with one end of the capacitor C4 and the loudspeaker SPK, the other end of the capacitor C4 is grounded, the other end of the loudspeaker SPK is in signal connection with one end of the resistor B2 and one end of the capacitor C5, the other end of the capacitor C5 is grounded, and the other end of the resistor B2 is connected into the audio signal.
Preferably, the bluetooth device is in signal connection with the MCU through the BT protocol.
Preferably, the upper computer is in wired signal connection with the MCU by adopting a USB bus protocol.
The utility model provides a pair of take audio signal optimization device of pronunciation collection for prior art, has following beneficial effect:
(1) The loudness in the audio playing process is improved, and the parameters of the audio file are simply and effectively adjusted through a visual human-computer interaction interface;
(2) The audio signal within the specified threshold range is obtained by compressing or gain processing the audio source data through the input filter circuit and the output filter circuit, and then the noise data is filtered and removed, so that the audio signal with higher quality is obtained.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a structural diagram of the audio signal optimization device with voice acquisition according to the present invention;
fig. 2 is an input filter circuit diagram of the audio signal optimization device with voice acquisition according to the present invention;
fig. 3 is the output filter circuit diagram of the audio signal optimizing apparatus with voice acquisition according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
Examples
The audio signal optimization device with the voice acquisition function is structurally shown in fig. 1 and comprises a Bluetooth device 1, an upper computer 2, a human-computer interaction interface 3, an MCU4, an audio chip 5, an input filter circuit 6, an output filter circuit 7, an MIC8 and a loudspeaker SPK;
the Bluetooth device 1 is in signal connection with the MCU4, the Bluetooth device 1 is used for transmitting audio data, and the MCU4 is used as a main processor; the upper computer 2 is in signal connection with the MCU4 and is used for transmitting audio signals; the human-computer interaction interface 3 is in signal connection with the MCU4 and is used for displaying and touching functional operation;
the Bluetooth device 1 is connected with the MCU4 through a BT protocol to transmit audio data, the MCU4 is in data connection with the audio chip 5 through an I2C bus, and the audio chip 5 intelligently reduces noise, controls gain and compresses signal peak values of audio signals, outputs optimized audio signals and finally outputs the optimized audio signals through the output filter circuit 7;
the upper computer 2 is wired with the MCU4 by adopting a USB bus protocol, an audio signal is transmitted to the MCU4 from the upper computer 2 through a USB, the MCU4 is in data connection with the audio chip 5 through an I2C bus, and the audio chip 5 intelligently reduces noise, controls gain and compresses a signal peak value of the audio signal, outputs an optimized audio signal and finally outputs the optimized audio signal through the output filter circuit 7;
the human-computer interaction interface 3 adopts a capacitive touch screen and is responsible for display and touch function operation.
The BT protocol BitTorrent (BT) is a communication protocol and is also an application program, and is widely used for peer-to-peer network communication P2P.
The communication protocol refers to the rules and conventions that must be followed by two entities to complete a communication or service. The protocol defines the format used by the data unit, the information and meaning that the information unit should contain, the manner of connection, and the timing of the sending and receiving of the information, thereby ensuring that the data is smoothly transmitted to a certain place in the network.
In computer communication, a communication protocol is used for realizing the standard between a computer and a network connection, and if the network does not have a uniform communication protocol, information transmission between the computers cannot be identified. The communication protocol refers to a communication rule stipulated in advance by the communication parties, and can be simply understood as a common language used for mutual conversation among computers. The two computers must use a communication protocol when communicating.
The USB bus is a polling bus where the host control port initiates all data transfers. Each bus action transfers up to three packets including Token (Token), data (Data), and contact (handwake).
The audio chip 5 is in signal connection with the MCU4 and is used for optimizing audio signals; the input filter circuit 6 is in signal connection with the audio chip 5 and is used for blocking and weakening high-frequency signals; the output filter circuit 7 is in signal connection with the audio chip 5 and is used for filtering the audio signal.
The type of the audio chip 5 is SIA8159, and the audio chip is used for achieving audio noise reduction, automatic gain control and signal peak compression on audio signals and optimizing the quality of the audio signals.
One end of the audio chip 5 is in signal connection with the MCU4 and the input filter circuit 6, and the other end is in signal connection with the output filter circuit 7, so that peak compression is performed on the audio signal output by the input filter circuit 6, and the audio signal is compressed to be within a compression threshold value.
The MIC8 is in signal connection with the input filter circuit 6, and is used for inputting sound source data.
The MIC8 is any equipment for inputting sound source data, and the sound source data is PCM data and is a fixed point number of 8 bits, 16 bits or 32 bits.
The input filter circuit diagram is shown in fig. 2, and comprises resistors R1 and R2 and capacitors C1, C2 and C3;
MIC8 input sound source data is to input filter circuit 6, with electric capacity C1's one end signal connection, electric capacity C1's the other end and resistance R1's one end signal connection, resistance R1's the other end and electric capacity C3's one end signal connection, electric capacity C3's the other end and resistance R2's one end signal connection, resistance R2's the other end and electric capacity C2's one end signal connection, electric capacity C2's the other end ground connection.
The input filter circuit 6 is an audio signal input filter circuit, only low-frequency signals can normally pass through, and high-frequency signals exceeding a set critical value are blocked and weakened.
The output filter circuit diagram is shown in fig. 3, and comprises resistors B1 and B2, capacitors C4 and C5, and a speaker SPK;
the audio chip 5 inputs the processed audio signal to the output filter circuit 7, and is connected with one end signal of the resistor B1, the other end of the resistor B1 is connected with one end of the capacitor C4 and the loudspeaker SPK signal, the other end of the capacitor C4 is grounded, the other end of the loudspeaker SPK is connected with one end of the resistor B2 and one end signal of the capacitor C5, the other end of the capacitor C5 is grounded, and the other end of the resistor B2 is connected with the audio signal.
The output filter circuit 7 is an LC filter circuit, filters the audio processing signal, and outputs a corresponding output filter signal to the audio output circuit.
The Bluetooth device 1 is in signal connection with the MCU4 through a BT protocol, and the upper computer 2 is in wired signal connection with the MCU4 through a USB bus protocol.
The device can obviously improve the loudness in the audio playing process and the audio quality, and can simply and effectively mediate the parameters, sound channels, stereo, surround sound, frame setting, staggered modes, bit rate and the like of audio files through a visual human-computer interaction interface.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An audio signal optimization device with voice acquisition comprises a Bluetooth device (1), an upper computer (2), a human-computer interaction interface (3) and an MCU (4);
the Bluetooth device (1) is in signal connection with the MCU (4), the Bluetooth device (1) is used for transmitting audio data, and the MCU (4) is used as a main processor;
the upper computer (2) is in signal connection with the MCU (4) and is used for transmitting audio signals;
the human-computer interaction interface (3) is in signal connection with the MCU (4) and is used for displaying and touching functional operation;
it is characterized by also comprising: the audio frequency chip (5), the input filter circuit (6) and the output filter circuit (7);
the audio chip (5) is in signal connection with the MCU (4) and is used for optimizing audio signals;
the input filter circuit (6) is in signal connection with the audio chip (5) and is used for blocking and weakening high-frequency signals;
the output filter circuit (7) is in signal connection with the audio chip (5) and is used for filtering the audio signals.
2. The audio signal optimization device with speech acquisition of claim 1, wherein the audio chip (5) is configured to perform audio noise reduction, automatic gain control, and signal peak compression on the audio signal.
3. The audio signal optimization device with voice collection function according to claim 2, wherein the audio chip (5) has one end connected to the MCU (4) and the input filter circuit (6) and the other end connected to the output filter circuit (7) for peak compression of the audio signal output from the input filter circuit (6).
4. The audio signal optimizing apparatus with voice capturing as claimed in claim 1, further comprising a MIC (8);
and the MIC (8) is in signal connection with the input filter circuit (6) and is used for inputting sound source data.
5. The audio signal optimizing apparatus with voice capturing as set forth in claim 4, wherein the MIC (8) is a device which inputs arbitrary audio source data.
6. The apparatus as claimed in claim 5, wherein the audio source data is PCM data, and is a fixed point number of 8bit, 16bit or 32 bit.
7. The audio signal optimization device with speech acquisition of claim 4, wherein the input filter circuit (6) comprises resistors R1, R2 and capacitors C1, C2, C3;
MIC (8) input sound source data is to input filter circuit (6), with electric capacity C1's one end signal connection, electric capacity C1's the other end and resistance R1's one end signal connection, resistance R1's the other end and electric capacity C3's one end signal connection, electric capacity C3's the other end and resistance R2's one end signal connection, resistance R2's the other end and electric capacity C2's one end signal connection, electric capacity C2's the other end ground connection.
8. The audio signal optimization device with speech acquisition of claim 1, wherein the output filter circuit (7) comprises resistors B1, B2 and capacitors C4, C5 and a loudspeaker SPK;
the audio chip (5) inputs the processed audio signal to the output filter circuit (7) and is in signal connection with one end of the resistor B1, the other end of the resistor B1 is in signal connection with one end of the capacitor C4 and the loudspeaker SPK, the other end of the capacitor C4 is grounded, the other end of the loudspeaker SPK is in signal connection with one end of the resistor B2 and one end of the capacitor C5, the other end of the capacitor C5 is grounded, and the other end of the resistor B2 is connected with the audio signal.
9. The audio signal optimization device with speech acquisition of claim 1, wherein the bluetooth apparatus (1) is in signal connection with the MCU (4) via the BT protocol.
10. The audio signal optimization device with voice collection according to claim 1, wherein the upper computer (2) is in wired signal connection with the MCU (4) by adopting a USB bus protocol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222899812.7U CN218679351U (en) | 2022-11-01 | 2022-11-01 | Audio signal optimization device with voice acquisition function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222899812.7U CN218679351U (en) | 2022-11-01 | 2022-11-01 | Audio signal optimization device with voice acquisition function |
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| Publication Number | Publication Date |
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| CN218679351U true CN218679351U (en) | 2023-03-21 |
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| CN202222899812.7U Active CN218679351U (en) | 2022-11-01 | 2022-11-01 | Audio signal optimization device with voice acquisition function |
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