CN116095564B - Display mixing circuit and display - Google Patents
Display mixing circuit and display Download PDFInfo
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- CN116095564B CN116095564B CN202310372843.3A CN202310372843A CN116095564B CN 116095564 B CN116095564 B CN 116095564B CN 202310372843 A CN202310372843 A CN 202310372843A CN 116095564 B CN116095564 B CN 116095564B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/15—Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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Abstract
The invention relates to the technical field of audio processing, in particular to a display audio mixing circuit and a display, wherein the display audio mixing circuit comprises: the display comprises a first input module, a second input and output module, a display chip, a digital signal processing module and an input and output module; the display chip is respectively connected with the first input module and the digital signal processing module, and the digital signal processing module is respectively connected with the second input and output module and the input and output module; because the invention can separate the video signals to obtain the first audio signals, the digital signal processing module mixes the received second audio signals with the first audio signals, and then the mixed audio signals are transmitted to the input and output module for playing.
Description
Technical Field
The present invention relates to the field of audio processing technologies, and in particular, to a display audio mixing circuit and a display.
Background
At present, in the field of displays, the electronic contest displays, art displays, business displays, portable displays and the like can be classified according to the use scenes and requirements, and along with diversification of the use scenes, the functional requirements of users on audio are higher and higher.
The existing display is basically provided with a three-wire earphone interface and a loudspeaker interface, along with the development of technology and the increase of use demands, the display with single audio output obviously cannot meet the application under a complex scene, and in order to enable the display to have a sound mixing function, sound card equipment with corresponding functions is required to be purchased and then installed, the operation process is complex, and the user experience is poor.
The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present invention and is not intended to represent an admission that the foregoing is prior art.
Disclosure of Invention
The invention mainly aims to provide a display sound mixing circuit and a display, and aims to solve the technical problems that sound card equipment with corresponding functions needs to be purchased again and then installed to realize the sound mixing function in the prior art, and the operation process is complicated.
To achieve the above object, the present invention provides a display mixing circuit, including: the display comprises a first input module, a second input and output module, a display chip, a digital signal processing module and an input and output module;
the display chip is respectively connected with the first input module and the digital signal processing module, and the digital signal processing module is respectively connected with the second input and output module and the input and output module;
the first input module is used for receiving a video signal output by first equipment and transmitting the video signal to the display chip;
the display chip is used for separating the video signals to obtain first audio signals and transmitting the first audio signals to the digital signal processing module;
the second input/output module is configured to receive a second audio signal output by a second device, and transmit the second audio signal to the digital signal processing module;
the digital signal processing module is used for mixing the first audio signal and the second audio signal and transmitting the mixed audio signals to the input and output module;
and the input and output module is used for playing the audio according to the mixed audio signal.
Optionally, the second pin, the third pin, the fourth pin, the fifth pin, the seventh pin, the eighth pin, the twenty-first pin and the twenty-second pin of the display chip are all connected with the digital signal processing module.
Optionally, the digital signal processing module includes: an audio transmission unit and a digital signal processing unit;
the audio transmission unit is connected with the display chip and the digital signal processing unit, and the digital signal processing unit is connected with the display chip, the second input and output module and the input and output module;
the audio transmission module is used for transmitting the first audio signal to the digital signal processing unit;
the digital signal processing unit is used for mixing the first audio signal and the second audio signal and transmitting the mixed audio signals to the input and output module.
Optionally, the audio transmission unit includes: the first resistor, the seventh resistor, the first capacitor, the second capacitor, the third capacitor and the fourth capacitor;
one end of the first resistor is connected with a third pin of the display chip, the other end of the first resistor is connected with the digital signal processing unit, one end of the first resistor, which is close to the digital signal processing unit, is connected with the first capacitor, the other end of the first resistor, which is close to the first capacitor, is grounded, one end of the first resistor, which is close to the first capacitor, is connected with the second resistor, the other end of the second resistor, which is connected with a fourth pin of the display chip, one end of the second resistor, which is close to the display chip, is connected with the third resistor, the other end of the third resistor, which is close to the digital signal processing unit, is connected with the fourth resistor, one end of the third resistor, which is close to the digital signal processing unit, is connected with one end of the first capacitor, one end of the fifth resistor, which is far from the first capacitor, one end of the fifth resistor, which is connected with an eighth pin of the display chip, the other end of the fifth resistor, which is close to the fourth capacitor, another end of the fourth resistor, which is connected with the seventh capacitor, the other end of the fifth resistor, which is close to the third resistor, the seventh capacitor, which is connected with the third capacitor, the other end of the third resistor, which is close to the third resistor, the other end of the third resistor, which is connected with the third resistor, the other end of the third resistor, and the other end of the third resistor, which is close to the digital signal processing unit are connected with the third resistor, one end of the seventh resistor, which is close to the second capacitor, is connected with the digital signal processing unit.
Optionally, the digital signal processing unit includes: a digital signal processing chip, eighth to eleventh resistors;
the fourteenth pin of the digital signal processing chip is connected with one end of the seventh resistor, which is close to the second capacitor, the sixteenth pin of the digital signal processing chip is connected with one end of the sixth resistor, which is close to the third capacitor, the twenty-fourth pin of the digital signal processing chip is connected with the eighth resistor, the other end of the eighth resistor is connected with the twenty-second pin of the display chip, the twenty-first pin of the digital signal processing chip is connected with one end of the first resistor, which is close to the first capacitor, the twenty-second pin of the digital signal processing chip is connected with the ninth resistor, the other end of the ninth resistor is connected with the twenty-first pin of the display chip, the twenty-third pin of the digital signal processing chip is connected with one end of the fifth resistor, which is close to the fourth capacitor, the thirty-fourth pin of the digital signal processing chip is connected with the tenth resistor, the other end of the tenth resistor is connected with one end of the third resistor, which is far from the second resistor, the twenty-fourth pin of the digital signal processing chip is connected with the eleventh resistor, and the other end of the eleventh resistor is connected with the display chip.
Optionally, the display mixing circuit further includes: a key detection module;
the key detection module is connected with the display chip and the digital signal processing module;
the display chip is also used for generating an adjusting signal according to user adjustment and transmitting the adjusting signal to the key detection module;
the key detection module is used for transmitting the adjusting signal to the digital signal processing module;
the digital signal processing module is further configured to perform gain adjustment on the first audio signal and the second audio signal according to the adjustment signal, mix the adjusted first audio signal and the adjusted second audio signal, and transmit the mixed audio signal to the input/output module;
and the input and output module is used for playing the audio according to the mixed audio signal.
Optionally, a fourteenth pin of the display chip is connected with the key detection module.
Optionally, a sixth pin, a seventh pin and an eighth pin of the digital signal processing chip are connected with the key detection module.
Optionally, the key detection module includes: twelfth to nineteenth resistors and fifth to ninth capacitors;
wherein one end of the twelfth resistor is connected with a seventh pin and an eighth pin of the digital signal processing chip, the other end of the twelfth resistor is grounded, one end of the twelfth resistor, which is close to the digital signal processing chip, is connected with the fifth capacitor, the other end of the fifth capacitor is connected with the thirteenth resistor, the other end of the thirteenth resistor is connected with a fourteenth pin of the display chip, one end of the fifth capacitor, which is close to the thirteenth resistor, is connected with the sixth capacitor, the other end of the sixth capacitor is connected with the fourteenth resistor, the other end of the fourteenth resistor is connected with one end of the twelfth resistor, which is close to the ground, one end of the sixth capacitor, which is close to the thirteenth resistor, is also connected with the fifteenth resistor, the other end of the fifteenth resistor is connected with the sixteenth resistor, the other end of the sixteenth resistor is connected with a sixth pin of the digital signal processing chip, one end of the sixth capacitor close to the fifteenth resistor is connected with the seventh capacitor, the other end of the seventh capacitor is connected with one end of the fourteenth resistor far away from the sixth resistor, one end of the fifteenth resistor close to the sixteenth resistor is connected with the eighth capacitor, the other end of the eighth capacitor is connected with one end of the seventh capacitor far away from the fifteenth resistor, one end of the eighth capacitor close to the sixteenth resistor is connected with the ninth capacitor, the other end of the ninth capacitor is connected with one end of the eighth capacitor far away from the sixteenth resistor, one end of the ninth capacitor close to the sixteenth resistor is also connected with the seventeenth resistor, the other end of the seventeenth resistor is connected with the eighteenth resistor, the other end of the eighteenth resistor is connected with a power supply, one end of the eighteenth resistor, which is close to the seventeenth resistor, is connected with the nineteenth resistor, and the other end of the nineteenth resistor is grounded.
In addition, in order to achieve the above purpose, the invention also provides a display, which comprises the display audio mixing circuit.
The invention provides a display mixing circuit, which comprises: the display comprises a first input module, a second input and output module, a display chip, a digital signal processing module and an input and output module; the display chip is respectively connected with the first input module and the digital signal processing module, and the digital signal processing module is respectively connected with the second input and output module and the input and output module; the first input module is used for receiving a video signal output by first equipment and transmitting the video signal to the display chip; the display chip is used for separating the video signals to obtain first audio signals and transmitting the first audio signals to the digital signal processing module; the second input/output module is configured to receive a second audio signal output by a second device, and transmit the second audio signal to the digital signal processing module; the digital signal processing module is used for mixing the first audio signal and the second audio signal and transmitting the mixed audio signals to the input and output module; and the input and output module is used for playing the audio according to the mixed audio signal. Because the invention can separate the video signals to obtain the first audio signals, the digital signal processing module mixes the received second audio signals with the first audio signals, and then the mixed audio signals are transmitted to the input and output module for playing.
Drawings
Fig. 1 is a functional block diagram of a first embodiment of a display audio mixing circuit according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a display chip in a first embodiment of a display audio mixing circuit according to an embodiment of the present invention;
fig. 3 is a functional block diagram of a second embodiment of a display audio mixing circuit according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of an audio transmission unit in a second embodiment of a display audio mixing circuit according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a digital signal processing unit in a second embodiment of a display audio mixing circuit according to an embodiment of the present invention;
fig. 6 is a functional block diagram of a third embodiment of a display audio mixing circuit according to an embodiment of the present invention;
fig. 7 is a schematic circuit diagram of a case detection module in a third embodiment of a display audio mixing circuit according to an embodiment of the present invention;
fig. 8 is a functional block diagram of voice transmission in a third embodiment of a display audio mixing circuit according to an embodiment of the present invention.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the |
| 1 | |
5 | Input/ |
| 2 | Second input/ |
6 | |
| 3 | Display chip | R1~R19 | First to |
| 4 | Digital signal processing module | C1~C9 | First to |
| 41 | Audio transmission unit | U | Digital signal processing chip |
| 42 | Digital signal processing unit |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, fig. 1 is a functional block diagram of a first embodiment of a display audio mixing circuit according to an embodiment of the present invention.
As shown in fig. 1, the display audio mixing circuit in this embodiment includes: a first input module 1, a second input and output module 2, a display chip 3, a digital signal processing module 4 and an input and output module 5;
the display chip 3 is respectively connected with the first input module 1 and the digital signal processing module 4, and the digital signal processing module 4 is respectively connected with the second input and output module 2 and the input and output module 5;
the first input module 1 is configured to receive a video signal output by a first device, and transmit the video signal to the display chip 3;
the display chip 3 is configured to separate the video signal to obtain a first audio signal, and transmit the first audio signal to the digital signal processing module 4;
the second input/output module 2 is configured to receive a second audio signal output by a second device, and transmit the second audio signal to the digital signal processing module 4;
the digital signal processing module 4 is configured to mix the first audio signal and the second audio signal, and transmit the mixed audio signals to the input/output module 5;
the input/output module 5 is configured to perform audio playing according to the mixed audio signal.
It should be noted that, the above-mentioned display mixing circuit provided in this embodiment may be applied to any scene where mixing is performed by a display, or may be a scene where mixing is performed by other devices, which is not limited in this embodiment, and in order to facilitate the following description, the embodiment uses a scene where mixing is performed by a display for description.
It may be understood that the first input module 1 may be a module configured on a display to receive a video signal, the first device may be a device outputting a video signal by a computer, etc., the display may receive the video signal sent by the first device through the first input module 1, the first input module 1 may be connected to the first device through a wired manner, for example, through an HDMI data line, a DP data line, etc., and may also be connected to the first device through a wireless manner, which is not limited in this embodiment.
It should be understood that, since the video signal includes the display portion data and the audio portion data, the display chip 3 may separate the display portion data and the audio portion data in the video signal, send the display portion data to the screen of the display for displaying, and transmit the audio portion data as the first audio signal to the digital signal processing module 4.
The second device may be a device that outputs an audio signal, such as a computer, but in this embodiment, the second device is not limited to being capable of outputting an audio signal only, the second input/output module 2 may be a module that is provided on a display and receives an audio signal sent by the second device, the display may receive an audio signal sent by the second device through the second input/output module 2, the second device and the second input/output module 2 may be connected by a wired manner, for example, an HDMI data line, a DP data line, a USB data line, or the like, or may be connected by a wireless manner, but in view of the high connection cost by a wireless manner, the transmission data stability is poor, in this embodiment, the first input module 1 may be connected to the first device through an HDMI data line or a DP data line, and the second input/output module 2 may be connected to the second device through a USB data line.
It should be emphasized that the input/output module 5 may be a module for audio playing, such as an earphone, or a power amplifier chip with a speaker, or may be another module for audio playing, which is not limited in this embodiment.
In a specific implementation, the first input module 1 receives a video signal output by a first device, and transmits the video signal to the display chip 3, the display chip 3 separates the video signal to obtain display part data and audio part data, the display part data is transmitted to a screen of the display to display, the audio part data is transmitted as a first audio signal to the digital signal processing module 4, the second input/output module 2 receives a second audio signal output by a second device, and transmits the second audio signal to the digital signal processing module 4, the digital signal processing module 4 performs mixing and noise reduction processing on the received first audio signal and second audio signal, and transmits the mixed audio signal to the input/output module 5, and the input/output module 5 performs audio playing according to the mixed audio signal, so that mixed audio playing can be realized, and the operation process of a user is simpler.
Further, referring to fig. 2, fig. 2 is a schematic circuit diagram of a display chip in a first embodiment of a display audio mixing circuit according to an embodiment of the present invention;
as shown in fig. 2, according to the first embodiment, the second pin, the third pin, the fourth pin, the fifth pin, the seventh pin, the eighth pin, the twenty-first pin, and the twenty-second pin of the display chip 3 are all connected to the digital signal processing module 4.
It should be noted that, the above-mentioned display chip 3 and the digital signal processing module 4 may perform data transmission through the IIS communication interface protocol or the UART communication interface protocol, and may also perform data transmission through other communication interface protocols, which is not limited in this embodiment.
In a specific implementation, the second pin, the third pin, the fourth pin, the seventh pin and the eighth pin of the display chip 3 are connected with the digital signal processing module 4 through an IIS communication interface protocol, and the twenty-first pin and the twenty-second pin of the display chip 3 are connected with the digital signal processing module 4 through a UART communication interface protocol, so that stability of data transmission can be ensured.
In this embodiment, the first input module 1 receives a video signal output by a first device, and transmits the video signal to the display chip 3, the display chip 3 separates the video signal to obtain display part data and audio part data, the display part data is transmitted to a screen of the display to display, the audio part data is transmitted as a first audio signal to the digital signal processing module 4, the second input/output module 2 receives a second audio signal output by a second device, and transmits the second audio signal to the digital signal processing module 4, the digital signal processing module 4 performs mixing and noise reduction processing on the received first audio signal and second audio signal, and transmits the mixed audio signal to the input/output module 5, and the input/output module 5 performs audio playing according to the mixed audio signal, so that mixed audio playing can be realized, and the user operation process is simpler, and meanwhile, the user operation process is connected with the digital signal processing module 4 through an IIS communication interface protocol and a UART communication interface protocol, so that stability of data transmission can be ensured.
Further, referring to fig. 3, fig. 3 is a functional block diagram of a second embodiment of a display audio mixing circuit according to an embodiment of the present invention, as shown in fig. 3, based on the first embodiment, the digital signal processing module 4 includes: an audio transmission unit 41 and a digital signal processing unit 42; wherein the audio transmission unit 41 is connected with the display chip 3 and the digital signal processing unit 42, and the digital signal processing unit 42 is connected with the display chip 3, the second input-output module 2 and the input-output module 5; the audio transmission module is configured to transmit the first audio signal to the digital signal processing unit 42; the digital signal processing unit 42 is configured to mix the first audio signal and the second audio signal, and transmit the mixed audio signal to the input/output module 5.
In a specific implementation, the audio transmission module transmits the first audio signal to the digital signal processing unit 42, and the digital signal processing unit 42 mixes and noise-reduces the first audio signal and the second audio signal, and transmits the mixed audio signal to the input/output module 5.
Further, referring to fig. 4, fig. 4 is a schematic circuit diagram of an audio transmission unit in a second embodiment of a display audio mixing circuit according to an embodiment of the present invention, and as shown in fig. 4, the audio transmission unit 41 includes: the first resistor R1 to the seventh resistor R7, the first capacitor C1, the second capacitor C2, the third capacitor C3, and the fourth capacitor C4;
wherein one end of the first resistor R1 is connected with a third pin of the display chip 3, one end of the first resistor R1 close to the digital signal processing unit 42 is connected with the third resistor R3, one end of the first resistor R1 close to the digital signal processing unit 42 is connected with the first capacitor C1, the other end of the first resistor R1 close to the first capacitor C1 is grounded, one end of the first resistor R1 close to the second resistor R2 is connected with a fourth pin of the display chip 3, the other end of the second resistor R2 close to the display chip 3 is connected with a fourth pin of the display chip 3, one end of the third resistor R2 close to the third resistor R3 is connected with the digital signal processing unit 42, one end of the third resistor R3 close to the digital signal processing unit 42 is connected with the fourth resistor R4, the other end of the fourth resistor R4 is far from the first resistor R1, the fifth resistor R5 close to the fourth resistor R5 is connected with the fourth pin of the fourth resistor C3, the other end of the fourth resistor R4 is connected with the fourth resistor R4 close to the fourth resistor C5, the other end of the fourth resistor R4 is connected with the fourth resistor R4 close to the third resistor C3, the third resistor R4 is connected with the fourth resistor C4 is connected with the fourth pin of the digital signal processing unit 42, the other end of the seventh resistor R7 is connected to the second capacitor C2, the other end of the second capacitor C2 is connected to one end of the third capacitor C3, which is close to the fourth capacitor C4, and one end of the seventh resistor R7, which is close to the second capacitor C2, is connected to the digital signal processing unit 42.
It should be noted that, through the above-mentioned audio transmission unit 41, data transmission through the IIS communication interface protocol can be realized.
In a specific implementation, the audio transmission unit 41 transmits the first audio signal to the digital signal processing unit 42 through the first resistor R1 to the seventh resistor R7, so as to realize data transmission through the IIS communication interface protocol.
Further, referring to fig. 5, fig. 5 is a schematic circuit diagram of a digital signal processing unit in a second embodiment of the audio mixing circuit for a display according to an embodiment of the present invention, as shown in fig. 5, the digital signal processing unit 42 includes: a digital signal processing chip U, eighth to eleventh resistors R8 to R11;
the fourteenth pin of the digital signal processing chip U is connected with one end of the seventh resistor R7 close to the second capacitor C2, the sixteenth pin of the digital signal processing chip U is connected with one end of the sixth resistor R6 close to the third capacitor C3, the twenty-third pin of the digital signal processing chip U is connected with one end of the eighth resistor R8 close to the fourth capacitor C4, the other end of the eighth resistor R8 is connected with the twenty-second pin of the display chip 3, the twenty-first pin of the digital signal processing chip U is connected with one end of the first resistor R1 close to the first capacitor C1, the twenty-second pin of the digital signal processing chip U is also connected with the ninth resistor R9, the other end of the ninth resistor R9 is connected with the twenty-first pin of the display chip 3, the twenty-third pin of the digital signal processing chip U is connected with one end of the fifth resistor R5 close to the fourth capacitor C4, the thirty-fourth pin of the digital signal processing chip U is connected with the thirty-fourth pin of the third resistor R10, the other end of the thirty-fourth resistor R10 is connected with the thirty-fourth resistor R11 far from the other end of the display chip 3.
It should be noted that, in this embodiment, the digital signal processing chip U may be a DSP chip, which has better stability, and is convenient to interface and integrate, and may be other chips capable of performing audio mixing.
It can be appreciated that in this embodiment, the DSP chip and the display chip 3 may be integrated on a board, and no additional ports are required, thereby expanding the application range.
In a specific implementation, the digital signal processing chip U is connected to the audio transmission unit 41 through a fourteenth pin, a sixteenth pin, a twenty-first pin, a twenty-third pin and a thirty-fourth pin, the audio transmission unit 41 is connected to the second pin, the third pin, the fourth pin, the seventh pin and the eighth pin of the display chip 3, so as to implement data transmission through the IIS communication interface protocol, and the digital signal processing chip U is connected to the twenty-first pin and the twenty-second pin of the display chip 3 through the twenty-second pin and the twenty-second pin, so as to implement communication data transmission through the UART communication interface protocol.
In this embodiment, the audio transmission unit 41 transmits the first audio signal output by the display chip 3 to the digital signal processing unit 42, the digital signal processing unit 42 mixes the received first audio signal and the received second audio signal, and transmits the mixed audio signal to the input/output module 5, so as to realize audio mixing and playing, and meanwhile, the audio mixing and playing is connected with the digital signal processing module 4 through the IIS communication interface protocol and the UART communication interface protocol, so that stability of data transmission can be ensured.
Further, considering that different users prefer different, and further, the requirements on audio are different, referring to fig. 6, fig. 6 is a functional block diagram of a third embodiment of a display audio mixing circuit according to an embodiment of the present invention, as shown in fig. 6, where the display audio mixing circuit further includes: a key detection module 6;
wherein, the key detection module 6 is connected with the display chip 3 and the digital signal processing module 4;
the display chip 3 is further configured to generate an adjustment signal according to user adjustment, and transmit the adjustment signal to the key detection module 6;
the key detection module 6 is configured to transmit the adjustment signal to the digital signal processing module 4;
the digital signal processing module 4 is further configured to perform gain adjustment on the first audio signal and the second audio signal according to the adjustment signal, mix the adjusted first audio signal and the adjusted second audio signal, and transmit the mixed audio signal to the input/output module 5;
the input/output module 5 is configured to perform audio playing according to the mixed audio signal.
It should be noted that, the earphone may be provided with an adjusting key, the user may adjust the volume according to personal preference, the adjusting signal may be generated according to the key pressed by the user, the display chip 3 may identify the corresponding key function according to the key pressed by the user, generate the corresponding adjusting signal according to the key function, and transmit the adjusting signal to the digital signal processing module 4 through the key detecting module 6.
It will be appreciated that with continued reference to fig. 2, the fourteenth pin of the display chip 3 is connected to the key detection module 6.
It should be understood that, with continued reference to fig. 5, the sixth pin, the seventh pin and the eighth pin of the digital signal processing chip U are connected to the key detection module 6.
In a specific implementation, the display chip 3 may generate an adjustment signal according to user adjustment, and transmit the adjustment signal to the digital signal processing module 4 through the key detection module 6, where the digital signal processing module 4 performs gain adjustment on the first audio signal and the second audio signal according to the adjustment instruction, mixes the adjusted first audio signal and the adjusted second audio signal, and finally transmits the mixed audio to the input/output module 5, so that the input/output module 5 performs audio playing according to the mixed audio signal.
Further, referring to fig. 7, fig. 7 is a schematic circuit diagram of a case detection module in a third embodiment of a display mixing circuit according to an embodiment of the present invention, as shown in fig. 7, the key detection module 6 includes: the twelfth resistor R12 to the nineteenth resistor R19 and the fifth capacitor C5 to the ninth capacitor C9;
wherein one end of the twelfth resistor R12 is connected with a seventh pin and an eighth pin of the digital signal processing chip U, the other end of the twelfth resistor R12 is grounded, one end of the twelfth resistor R12 close to the digital signal processing chip U is connected with the fifth capacitor C5, the other end of the fifth capacitor C5 is connected with the thirteenth resistor R13, the other end of the thirteenth resistor R13 is connected with a fourteenth pin of the display chip 3, one end of the fifth resistor C5 close to the thirteenth resistor R13 is connected with the sixth capacitor C6, the other end of the sixth resistor C6 is connected with the fourteenth resistor R14, the other end of the fourteenth resistor R14 is connected with one end of the twelfth resistor R12 close to the ground, one end of the sixth resistor C6 is also connected with the fifteenth resistor R15, the other end of the fifteenth resistor R15 is connected with the sixteenth resistor R16, the other end of the sixteenth resistor R16 is connected with the seventeenth resistor C8, the other end of the seventeenth resistor C6 is connected with the seventeenth resistor C8, the seventeenth resistor R15 is far from the sixteenth resistor C16, the seventeenth resistor C7 is connected with the seventeenth resistor C16, the other end of the seventeenth resistor C8 is connected with the seventeenth resistor C6, the seventeenth resistor R15 is far from the sixteenth resistor C, the seventeenth resistor C is connected with the seventeenth resistor R15, the sixty-third resistor is connected with the sixty-third resistor C6, one end of the ninth capacitor C9, which is close to the seventeenth resistor R16, is further connected to the seventeenth resistor R17, the other end of the seventeenth resistor R17 is connected to the eighteenth resistor R18, the other end of the eighteenth resistor R18 is connected to a power supply, one end of the eighteenth resistor R18, which is close to the seventeenth resistor R17, is connected to the nineteenth resistor R19, and the other end of the nineteenth resistor R19 is grounded.
The power supply may be a 3.3V power supply, or may be a power supply with other voltage values, which is not limited in this embodiment.
Further, referring to fig. 8, fig. 8 is a functional block diagram of voice transmission in a third embodiment of a display audio mixing circuit according to an embodiment of the present invention; as shown in fig. 8, in this embodiment, the earphone may have a bidirectional function, and may be used as an earphone to receive the audio transmitted by the digital signal processing module 4 for playing, and may also receive the voice signal transmitted by the earphone through the digital signal processing module 4, in this embodiment, when a user speaks, the user may collect the voice content through a microphone on the earphone and convert the voice content into the voice signal for transmitting to the digital signal processing module 4, and the digital signal processing module 4 may perform noise reduction processing on the voice signal and transmit the processed voice signal to the second device for playing through the second input/output module 2 and the USB data line.
According to the embodiment, the display chip 3 can be used for generating the adjusting signal, the fourteenth pin of the display chip 3 is used for transmitting the adjusting signal to the key detection module 6, the key detection module 6 is used for transmitting the adjusting signal to the digital signal processing module 4, the digital signal processing module 4 is used for adjusting the first audio signal and the second audio signal according to the adjusting signal, further, the sound effect adjustment according to the user requirement can be realized, the user experience is improved, meanwhile, the voice content of the microphone can be collected and converted into the voice signal, and the voice signal is transmitted to the second equipment for playing after the noise reduction processing is carried out.
In addition, in order to achieve the above purpose, the invention also provides a display, which comprises the display audio mixing circuit. The specific structure of the display audio mixing circuit refers to the above embodiments, and since the display adopts all the technical solutions of all the embodiments, the display has at least all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (9)
1. A display mixing circuit, the display mixing circuit comprising: the display comprises a first input module, a second input and output module, a display chip, a digital signal processing module and an input and output module;
the display chip is respectively connected with the first input module and the digital signal processing module, and the digital signal processing module is respectively connected with the second input and output module and the input and output module;
the first input module is used for receiving a video signal output by first equipment and transmitting the video signal to the display chip;
the display chip is used for separating the video signals to obtain first audio signals and transmitting the first audio signals to the digital signal processing module;
the second input/output module is configured to receive a second audio signal output by a second device, and transmit the second audio signal to the digital signal processing module;
the digital signal processing module is used for mixing the first audio signal and the second audio signal and transmitting the mixed audio signals to the input and output module;
the input/output module is used for playing audio according to the mixed audio signal;
the display chip is connected with the digital signal processing module through a UART communication interface protocol;
wherein, the digital signal processing module includes: an audio transmission unit and a digital signal processing unit;
the audio transmission unit is connected with the display chip and the digital signal processing unit, and the digital signal processing unit is connected with the display chip, the second input and output module and the input and output module;
the audio transmission module is used for transmitting the first audio signal to the digital signal processing unit;
the digital signal processing unit is used for mixing and denoising the first audio signal and the second audio signal and transmitting the processed audio signals to the input and output module.
2. The display mixing circuit of claim 1, wherein the second pin, the third pin, the fourth pin, the fifth pin, the seventh pin, the eighth pin, the twenty-first pin, and the twenty-second pin of the display chip are all connected with the digital signal processing module.
3. The display mixing circuit of claim 2, wherein the audio transmission unit comprises: the first resistor, the seventh resistor, the first capacitor, the second capacitor, the third capacitor and the fourth capacitor;
one end of the first resistor is connected with a third pin of the display chip, the other end of the first resistor is connected with the digital signal processing unit, one end of the first resistor, which is close to the digital signal processing unit, is connected with the first capacitor, the other end of the first resistor, which is close to the first capacitor, is grounded, one end of the first resistor, which is close to the first capacitor, is connected with the second resistor, the other end of the second resistor, which is connected with a fourth pin of the display chip, one end of the second resistor, which is close to the display chip, is connected with the third resistor, the other end of the third resistor, which is close to the digital signal processing unit, is connected with the fourth resistor, one end of the third resistor, which is close to the digital signal processing unit, is connected with one end of the first capacitor, one end of the fifth resistor, which is far from the first capacitor, one end of the fifth resistor, which is connected with an eighth pin of the display chip, the other end of the fifth resistor, which is close to the fourth capacitor, another end of the fourth resistor, which is connected with the seventh capacitor, the other end of the fifth resistor, which is close to the third resistor, the seventh capacitor, which is connected with the third capacitor, the other end of the third resistor, which is close to the third resistor, the other end of the third resistor, which is connected with the third resistor, the other end of the third resistor, and the other end of the third resistor, which is close to the digital signal processing unit are connected with the third resistor, one end of the seventh resistor, which is close to the second capacitor, is connected with the digital signal processing unit.
4. The display mixing circuit of claim 3, wherein the digital signal processing unit comprises: a digital signal processing chip, eighth to eleventh resistors;
the fourteenth pin of the digital signal processing chip is connected with one end of the seventh resistor, which is close to the second capacitor, the sixteenth pin of the digital signal processing chip is connected with one end of the sixth resistor, which is close to the third capacitor, the twenty-fourth pin of the digital signal processing chip is connected with the eighth resistor, the other end of the eighth resistor is connected with the twenty-second pin of the display chip, the twenty-first pin of the digital signal processing chip is connected with one end of the first resistor, which is close to the first capacitor, the twenty-second pin of the digital signal processing chip is connected with the ninth resistor, the other end of the ninth resistor is connected with the twenty-first pin of the display chip, the twenty-third pin of the digital signal processing chip is connected with one end of the fifth resistor, which is close to the fourth capacitor, the thirty-fourth pin of the digital signal processing chip is connected with the tenth resistor, the other end of the tenth resistor is connected with one end of the third resistor, which is far from the second resistor, the twenty-fourth pin of the digital signal processing chip is connected with the eleventh resistor, and the other end of the eleventh resistor is connected with the display chip.
5. The display mixing circuit of claim 4, wherein the display mixing circuit further comprises: a key detection module;
the key detection module is connected with the display chip and the digital signal processing module;
the display chip is also used for generating an adjusting signal according to user adjustment and transmitting the adjusting signal to the key detection module;
the key detection module is used for transmitting the adjusting signal to the digital signal processing module;
the digital signal processing module is further configured to perform gain adjustment on the first audio signal and the second audio signal according to the adjustment signal, mix the adjusted first audio signal and the adjusted second audio signal, and transmit the mixed audio signal to the input/output module;
and the input and output module is used for playing the audio according to the mixed audio signal.
6. The audio mixing circuit of claim 5, wherein a fourteenth pin of the display chip is connected with the key detection module.
7. The audio mixing circuit of claim 6, wherein a sixth pin, a seventh pin and an eighth pin of the digital signal processing chip are connected with the key detection module.
8. The audio mixing circuit of claim 7, wherein the key detection module comprises: twelfth to nineteenth resistors and fifth to ninth capacitors;
wherein one end of the twelfth resistor is connected with a seventh pin and an eighth pin of the digital signal processing chip, the other end of the twelfth resistor is grounded, one end of the twelfth resistor, which is close to the digital signal processing chip, is connected with the fifth capacitor, the other end of the fifth capacitor is connected with the thirteenth resistor, the other end of the thirteenth resistor is connected with a fourteenth pin of the display chip, one end of the fifth capacitor, which is close to the thirteenth resistor, is connected with the sixth capacitor, the other end of the sixth capacitor is connected with the fourteenth resistor, the other end of the fourteenth resistor is connected with one end of the twelfth resistor, which is close to the ground, one end of the sixth capacitor, which is close to the thirteenth resistor, is also connected with the fifteenth resistor, the other end of the fifteenth resistor is connected with the sixteenth resistor, the other end of the sixteenth resistor is connected with a sixth pin of the digital signal processing chip, one end of the sixth capacitor close to the fifteenth resistor is connected with the seventh capacitor, the other end of the seventh capacitor is connected with one end of the fourteenth resistor far away from the sixth resistor, one end of the fifteenth resistor close to the sixteenth resistor is connected with the eighth capacitor, the other end of the eighth capacitor is connected with one end of the seventh capacitor far away from the fifteenth resistor, one end of the eighth capacitor close to the sixteenth resistor is connected with the ninth capacitor, the other end of the ninth capacitor is connected with one end of the eighth capacitor far away from the sixteenth resistor, one end of the ninth capacitor close to the sixteenth resistor is also connected with the seventeenth resistor, the other end of the seventeenth resistor is connected with the eighteenth resistor, the other end of the eighteenth resistor is connected with a power supply, one end of the eighteenth resistor, which is close to the seventeenth resistor, is connected with the nineteenth resistor, and the other end of the nineteenth resistor is grounded.
9. A display comprising the display mixing circuit of any one of claims 1 to 8.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1442799A (en) * | 2003-04-09 | 2003-09-17 | 刘开元 | Method of making karaoke possess sing leading function |
| JP2007221483A (en) * | 2006-02-16 | 2007-08-30 | Sanyo Electric Co Ltd | Voice mixing apparatus and voice mixing method |
| CN104883643A (en) * | 2015-03-31 | 2015-09-02 | 广州乐畅声学科技有限公司 | Bass boost system and control method thereof |
| CN113542982A (en) * | 2021-06-28 | 2021-10-22 | 瑞芯微电子股份有限公司 | Sound mixing method and storage medium |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3021580B2 (en) * | 1990-08-31 | 2000-03-15 | ソニー株式会社 | Karaoke equipment |
| JP4449987B2 (en) * | 2007-02-15 | 2010-04-14 | ソニー株式会社 | Audio processing apparatus, audio processing method and program |
| US8218792B2 (en) * | 2008-03-20 | 2012-07-10 | University Of Florida Research Foundation, Inc. | Autonomous mixer for devices capable of storing and playing audio signals |
| JP4488091B2 (en) * | 2008-06-24 | 2010-06-23 | ソニー株式会社 | Electronic device, video content editing method and program |
| US20110115878A1 (en) * | 2009-11-18 | 2011-05-19 | Next Generation Reporting, LLC | Oral and video proceedings collection and transcription device |
| CN204014021U (en) * | 2014-05-27 | 2014-12-10 | 深圳市澳宏电子有限公司 | With the earphone of sound-conducting apparatus |
| CN105491302A (en) * | 2014-09-16 | 2016-04-13 | 中兴通讯股份有限公司 | Audio signal output method and device, terminal, and system |
| CN106060743A (en) * | 2016-08-03 | 2016-10-26 | 上海山景集成电路股份有限公司 | Microphone, microphone combination and microphone signal processing method |
| CN107820035A (en) * | 2017-03-23 | 2018-03-20 | 北京君林科技股份有限公司 | The merging method and HDMI connector of a kind of external audio signal and HDMI signals |
| CN114257905B (en) * | 2020-09-23 | 2023-04-07 | 华为技术有限公司 | Audio processing method, computer-readable storage medium, and electronic device |
| CN115620736A (en) * | 2021-07-16 | 2023-01-17 | 腾讯科技（深圳）有限公司 | Audio sharing method and device, computer readable storage medium and electronic equipment |
| US11850507B2 (en) * | 2021-09-02 | 2023-12-26 | Steelseries Aps | Audio mixing and equalization in gaming systems |
| CN218788839U (en) * | 2022-11-15 | 2023-04-04 | 青岛海信电子设备股份有限公司 | Audio mixing circuit, display device and audio playing device |
-
2023
- 2023-04-10 CN CN202310372843.3A patent/CN116095564B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1442799A (en) * | 2003-04-09 | 2003-09-17 | 刘开元 | Method of making karaoke possess sing leading function |
| JP2007221483A (en) * | 2006-02-16 | 2007-08-30 | Sanyo Electric Co Ltd | Voice mixing apparatus and voice mixing method |
| CN104883643A (en) * | 2015-03-31 | 2015-09-02 | 广州乐畅声学科技有限公司 | Bass boost system and control method thereof |
| CN113542982A (en) * | 2021-06-28 | 2021-10-22 | 瑞芯微电子股份有限公司 | Sound mixing method and storage medium |
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|---|---|
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