CN220234767U - Audio and video acquisition system with audio mixing function - Google Patents
Audio and video acquisition system with audio mixing function Download PDFInfo
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- CN220234767U CN220234767U CN202321540678.XU CN202321540678U CN220234767U CN 220234767 U CN220234767 U CN 220234767U CN 202321540678 U CN202321540678 U CN 202321540678U CN 220234767 U CN220234767 U CN 220234767U
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Abstract
The utility model discloses an Audio and video acquisition system with Audio mixing, which comprises a video processing chip A, an Audio conversion chip B, an Audio processing chip C and an Audio and video processing chip D, wherein the input end of the video processing chip A is connected with an HDMI input terminal, audio and video signals of input HDMI are separated, the separated Audio signals are sent into the Audio conversion chip B, the separated video chips are sent into the Audio and video processing chip D, the input end of the Audio processing chip C is respectively connected with an Audio input terminal, an MIC input terminal and the Audio conversion chip B, the output end of the Audio processing chip C is connected with the Audio and video processing chip D, and the output end of the Audio and video processing chip D is connected with a USB output terminal. The utility model realizes the mixing of multiple paths of audio signals, combines the audio signals with the video signals for output, has high integral integration level and is simpler and more convenient for connection.
Description
Technical Field
The utility model relates to the field of audio and video acquisition, in particular to an audio and video acquisition system with audio mixing.
Background
The current audio and video acquisition system has very wide application scene. But it is common in the market to collect single-channel audio and video. When the multi-channel audio is required to be mixed and collected simultaneously, the existing single-channel audio and video collectors cannot meet the requirement, and the multiple single-channel audio and video collectors are required to be matched for use, so that the connection among multiple devices becomes complex, the operation is difficult, and the overall relative cost is high.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, and provides an audio and video acquisition system with audio mixing, which realizes the audio mixing of multiple paths of audio signals, combines and outputs the audio signals with video signals, and has high integral integration level and simpler connection.
In order to achieve the above purpose, the present utility model proposes the following technical scheme: the Audio and video acquisition system with the Audio mixing function comprises a video processing chip A, an Audio conversion chip B, an Audio processing chip C and an Audio and video processing chip D, wherein the input end of the video processing chip A is connected with an HDMI input terminal, audio and video signals are separated, the separated Audio signals are sent into the Audio conversion chip B, the separated video chips are sent into the Audio and video processing chip D, the input end of the Audio processing chip C is respectively connected with an Audio input terminal, an MIC input terminal and the Audio conversion chip B, the output end of the Audio processing chip C is connected with the Audio and video processing chip D, and the output end of the Audio and video processing chip D is connected with a USB output terminal.
Preferably, the output end of the video processing chip a is further connected with an HDMI loop-out terminal.
Preferably, the video processing chip a divides the input HDMI audio/video signal into two paths, and performs audio/video separation on one path of audio/video signal, and the chip model is MS9333.
Preferably, the other output end of the Audio processing chip C is directly connected to the Audio output terminal.
Preferably, the audio processing chip C mixes the input multi-channel audio signals, and the model number of the audio processing chip C is WM8960.
Preferably, the audio conversion chip B converts an input digital audio signal into an analog audio signal, and the chip model is CS4334.
Preferably, the audio/video processing chip D mixes and outputs the HDMI video signal and the audio/audio signal, and has a chip model MS2109.
Compared with the prior art, the Audio and video acquisition system with Audio mixing disclosed by the utility model supports the acquisition of Audio and video of one path of HDMI input signal, one path of externally input Audio analog Audio and one path of externally input microphone Audio signal at the same time, and outputs the three Audio signals together with video signals after Audio mixing processing;
the extra set one-path HDMI high-definition video signal loop-out function can realize the direct output of the original HDMI signal;
the whole system has high integration level, so that the user has simpler use operation and connection, the cost is lower, and the requirements of multi-channel audio mixing acquisition scenes can be met.
Drawings
In order to more clearly illustrate the embodiments of the present utility model 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. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
FIG. 1 is an overall schematic of an embodiment of the present utility model;
FIG. 2 is a schematic diagram of signal trend according to an embodiment of the present utility model;
FIG. 3 is a schematic circuit diagram of a video processing chip A according to an embodiment of the present utility model;
fig. 4 is a schematic circuit diagram of an audio conversion chip B according to an embodiment of the present utility model;
fig. 5 is a schematic circuit diagram of an audio processing chip C according to an embodiment of the present utility model;
fig. 6 is a schematic circuit diagram of an audio/video processing chip D according to an embodiment of the present utility model.
Description of the embodiments
Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.
The utility model discloses an Audio and video acquisition system with Audio mixing, which is used for realizing input Audio mixing of multipath Audio signals, wherein the system frame is shown in fig. 1 and comprises a video processing chip A, an Audio conversion chip B, an Audio processing chip C and an Audio and video processing chip D, wherein the input end of the video processing chip A is connected with an HDMI input terminal, one output end of the video processing chip A is connected with an HDMI loop-out terminal, the second output end of the video processing chip A is connected with the input end of the Audio conversion chip B, the third output end of the video processing chip is connected with the input end of the Audio and video processing chip D, the input end of the Audio processing chip C is respectively connected with an Audio input terminal, an MIC input terminal and the Audio conversion chip B, the output end of the Audio processing chip C is respectively connected with an Audio output terminal and an Audio and video processing chip D, and the output end of the Audio and video processing chip D is connected with a USB output terminal.
As shown in fig. 2, the signal trend diagram of the system is shown in fig. 2, the video processing chip a divides the input HDMI Audio/video signal into two paths, one path is directly output through the HDMI loop-out interface, the other path is used for Audio/video separation, the separated digital Audio signal is sent into the Audio conversion chip B, digital-to-analog conversion is performed through the Audio conversion chip B, then the digital-to-analog conversion is performed into the Audio processing chip C, the video signal separated by the video processing chip a is directly sent into the Audio/video processing chip D, the Audio processing chip C mixes the analog Audio signal B sent from the Audio input terminal, the microphone signal C sent from the MIC input terminal, and the analog Audio signal a sent from the Audio conversion chip B, and the obtained mixed Audio signal is sent into the Audio/video processing chip D, and is mixed with the video signal to form a USB Audio/video signal, and is output through the USB output terminal.
Specifically, the video processing chip a divides the input HDMI audio/video signal into two paths, and performs audio/video separation on one path of audio/video signal, where the chip model is MS9333, and a specific connection circuit is shown in fig. 3, and pins 13, 12, 10, 9, 7, 6, 4, 3, 26, 25, and 23 of the video processing chip a are respectively connected to pins 1, 3, 4, 6, 7, 9, 10, 12, 15, 16, and 19 of the HDMI input terminal J1, and pins 63, 62, 60, 59, 58, 57, 55, 54, 32, 31, and 30 of the video processing chip a are respectively connected to pins 1, 3, 4, 6, 7, 9, 10, 12, 15, 16, and 19 of the HDMI output terminal J2, and pins 48, 46, 47, and 45 of the video processing chip a are respectively connected to pins 1, 2, 3, and 4 of the audio conversion chip B (see fig. 4); pins 43, 42, 40, 39, 38, 37, 35, 34 of the video processing chip a are respectively connected with pins 35, 34, 32, 31, 29, 28, 26, 25 of the audio/video processing chip D (see fig. 6).
The audio conversion chip B converts an input digital audio signal into an analog audio signal, the chip model is CS4334, the specific circuit is shown in fig. 4, the input pins 1, 2, 3, and 4 are respectively connected with pins 48, 46, 47, and 45 of the video processing chip a, and the output pins 10 and 7 are respectively connected with pins 7 and 2 of the audio processing chip C.
The Audio processing chip C mixes the input multi-channel Audio signals, the model of the Audio processing chip C is WM8960, the specific circuit is shown in fig. 5, the input pins 6 and 3 of the Audio processing chip C are correspondingly connected with the pins 3 and 2 of the Audio input terminal PJ1, the input pin 4 of the Audio processing chip C is correspondingly connected with the pin 2 of the MIC input terminal PJ2, and the output pins 12, 15, 16 and 11 of the Audio processing chip C are correspondingly connected with the pins 9, 10, 11 and 12 of the Audio and video processing chip D.
The audio/video processing chip D mixes and outputs the HDMI video signal and the audio/audio signal, and the chip model is MS2109, and the specific circuit is shown in fig. 6, where pins 35, 34, 32, 31, 29, 28, 26, and 25 corresponding to the audio/video processing chip D are respectively connected to pins 43, 42, 40, 39, 38, 37, 35, and 34 corresponding to the video processing chip a, and pins 9, 10, 11, and 12 corresponding to the video processing chip D are respectively connected to pins 12, 15, 16, and 11 corresponding to the audio processing chip C, and pins 3 and 2 corresponding to the audio/video processing chip D are respectively connected to pins 4 and 5 corresponding to the USB output terminal J6.
The utility model realizes the mixing of multiple paths of audio signals, combines the audio signals with the video signals for output, has high integral integration level and is simpler and more convenient for connection.
While the foregoing has been disclosed in the specification and drawings, it will be apparent to those skilled in the art that various substitutions and modifications may be made without departing from the spirit of the utility model, and it is intended that the scope of the utility model be limited not by the specific embodiments disclosed, but by the appended claims.
Claims (7)
1. An audio and video acquisition system with audio mixing function is characterized in that: the Audio processing device comprises a video processing chip A, an Audio conversion chip B, an Audio processing chip C and an Audio and video processing chip D, wherein the input end of the video processing chip A is connected with an HDMI input terminal, audio and video signals are input into the Audio conversion chip B after being separated, the separated Audio signals are input into the Audio and video processing chip D, the input end of the Audio processing chip C is respectively connected with an Audio input terminal, an MIC input terminal and the Audio conversion chip B, the output end of the Audio processing chip C is connected with the Audio and video processing chip D, and the output end of the Audio and video processing chip D is connected with a USB output terminal.
2. The audio-video collection system with audio mixing according to claim 1, wherein: and the output end of the video processing chip A is also connected with an HDMI loop-out terminal.
3. The audio-video collection system with audio mixing according to claim 1, wherein: the video processing chip A divides the input HDMI audio/video signals into two paths, and performs audio/video separation on one path of audio/video signals, and the chip model is MS9333.
4. The audio-video collection system with audio mixing according to claim 1, wherein: the other output end of the Audio processing chip C is directly connected with an Audio output terminal.
5. The audio-video collection system with audio mixing according to claim 4, wherein: the audio processing chip C mixes the input multipath audio signals, and the model number of the audio processing chip C is WM8960.
6. The audio-video collection system with audio mixing according to claim 1, wherein: the audio conversion chip B converts the input digital audio signal into an analog audio signal, and the chip model is CS4334.
7. The audio-video collection system with audio mixing according to claim 1, wherein: the audio/video processing chip D mixes and outputs the HDMI video signal and the audio/audio signal, and the chip model is MS2109.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321540678.XU CN220234767U (en) | 2023-06-16 | 2023-06-16 | Audio and video acquisition system with audio mixing function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321540678.XU CN220234767U (en) | 2023-06-16 | 2023-06-16 | Audio and video acquisition system with audio mixing function |
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| CN220234767U true CN220234767U (en) | 2023-12-22 |
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| CN202321540678.XU Active CN220234767U (en) | 2023-06-16 | 2023-06-16 | Audio and video acquisition system with audio mixing function |
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- 2023-06-16 CN CN202321540678.XU patent/CN220234767U/en active Active
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