CN218240722U - Audio transmission circuit - Google Patents
Audio transmission circuit Download PDFInfo
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- CN218240722U CN218240722U CN202222820873.XU CN202222820873U CN218240722U CN 218240722 U CN218240722 U CN 218240722U CN 202222820873 U CN202222820873 U CN 202222820873U CN 218240722 U CN218240722 U CN 218240722U
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Abstract
The utility model discloses an audio transmission circuit, including adapter audio input module, external audio input module, the audio control module, audio processing module, adder output module, earphone amplification module, power module, the signal output part of adapter audio input module is connected with audio processing module's signal input part, audio processing module's signal output part is connected with audio control module's signal input part, audio control module's signal output part is connected with adder output module's signal input part, external audio input module's signal output part is connected with adder output module's signal input part, adder output module's signal output part is connected with earphone amplification module's signal input part; the two audio information are mixed in the output module of the adder and then output through the sound box or the earphone amplifying module, so that the output audio is plump, and the experience of players is better.
Description
Technical Field
The utility model relates to an audio transmission's technical field specifically is an audio transmission circuit.
Background
The audio transmission of an electric guitar usually includes picking up the played sound through a sound pick-up, and transmitting the sound to a sound box through an audio transmission line or an audio transmission module to play the sound. However, the audio output method is only to play the sound played by the electric guitar, so that the played sound is slightly single, and the experience of the player is poor.
SUMMERY OF THE UTILITY MODEL
Based on this, it is necessary to provide an audio transmission circuit.
The utility model provides an audio transmission circuit, including adapter audio input module, external audio input module, the audio control module, audio processing module, adder output module, earphone amplifier module, power module, the signal output part of adapter audio input module is connected with audio processing module's signal input part, audio processing module's signal output part is connected with audio control module's signal input part, audio control module's signal output part is connected with adder output module's signal input part, external audio input module's signal output part is connected with adder output module's signal input part, adder output module's signal output part is connected with earphone amplifier module's signal input part, power module respectively with adapter audio input module, external audio input module, audio control module, audio processing module, adder output module, earphone amplifier module electric connection.
In one embodiment, the audio transmission circuit further comprises a microphone audio input module, and a signal output end of the microphone audio input module is connected with a signal input end of the adder output module.
In one embodiment, the audio transmission circuit further comprises an indicator light module, and a signal input end of the indicator light module is connected with a signal output end of the sound pickup audio input module.
In one embodiment, the sound effect control module comprises a sound effect control unit, and the unit model of the sound effect control unit is PIC10F200.
In one embodiment, the sound effect processing module comprises a sound effect processing unit, and the unit model of the sound effect processing unit is AP8248A2.
In one embodiment, the earphone amplification module comprises an audio amplification unit, and the unit model of the audio amplification unit is 8002B.
In one embodiment, the adder output module comprises an operational amplifier with a unit model number of SGM8632.
In one embodiment, the power module comprises a boosting unit, and the chip model of the boosting unit is HX4002B.
Above-mentioned audio transmission circuit, through adapter audio input module, external audio input module, audio control module, audio processing module, adder output module, the cooperation setting of earphone amplification module, adapter audio input module obtains electric guitar audio information through the adapter, through audio processing module, send for adder output module after audio control module handles, send the audio information of accompaniment for adder output module through external audio input module, through audio amplifier or earphone amplification module output after mixing two kinds of audio information in adder output module, make the audio frequency of output more plump, it feels better to make player experience.
Drawings
Fig. 1 is a schematic circuit diagram of an audio transmission circuit according to an embodiment of the present invention;
fig. 2 is a circuit diagram of a pickup audio input module of the audio transmission circuit of fig. 1 according to another embodiment of the present invention;
fig. 3 is a circuit diagram of an external audio input module of the audio transmission circuit of fig. 1 according to an embodiment of the present invention;
fig. 4 is a circuit diagram of a sound effect control module of the audio transmission circuit of fig. 1 according to an embodiment of the present invention;
fig. 5 is a circuit diagram of a sound effect processing module of the audio transmission circuit of fig. 1 according to an embodiment of the present invention;
fig. 6 is a circuit diagram of an adder output module of the audio transmission circuit of fig. 1 according to an embodiment of the invention;
fig. 7 is a circuit diagram of an earphone amplifying module of the audio transmission circuit of fig. 1 according to an embodiment of the present invention;
fig. 8 is a circuit diagram of a power module of the audio transmission circuit of fig. 1 according to an embodiment of the present invention;
fig. 9 is a circuit diagram of a microphone audio input module of the audio transmission circuit of fig. 1 according to an embodiment of the invention;
fig. 10 is a circuit diagram of an indicator light module of the audio transmission circuit shown in fig. 1 according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms different from those described herein and similar modifications may be made by those skilled in the art without departing from the spirit and scope of the invention and, therefore, the invention is not to be limited to the specific embodiments disclosed below.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly connected" to another element, there are no intervening elements present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, fig. 2, and fig. 3, an audio transmission circuit includes a pickup audio input module 100, an external audio input module 200, an audio control module 300, an audio processing module 400, an adder output module 500, an earphone amplification module 600, and a power module 700, where a signal output end of the pickup audio input module 100 is connected to a signal input end of the audio processing module 400, a signal output end of the audio processing module 400 is connected to a signal input end of the audio control module 300, a signal output end of the audio control module 300 is connected to a signal input end of the adder output module 500, a signal output end of the external audio input module 200 is connected to a signal input end of the adder output module 500, a signal output end of the adder output module 500 is connected to a signal input end of the earphone amplification module 600, and the power module 700 is electrically connected to the pickup audio input module 100, the external audio input module 200, the audio control module 300, the audio processing module 400, the adder output module 500, and the earphone amplification module 600, respectively.
As shown in fig. 9, in one embodiment, the audio transmission circuit further includes a microphone audio input module 800, and a signal output terminal of the microphone audio input module 800 is connected to a signal input terminal of the adder output module 500.
As shown in fig. 10, in one embodiment, the audio transmission circuit further includes an indicator light module 900, and a signal input terminal of the indicator light module 900 is connected to a signal output terminal of the microphone audio input module 100.
As shown in FIG. 4, in one embodiment, the sound effect control module 300 comprises a sound effect control unit 310, and the unit model of the sound effect control unit 310 is PIC10F200.
As shown in FIG. 5, in one embodiment, the sound processing module 400 includes a sound processing unit 410, and the sound processing unit 410 is of the type AP8248A2.
As shown in fig. 7, in one embodiment, the headphone amplification module 600 includes an audio amplification unit 610, and the unit model of the audio amplification unit 610 is 8002B.
As shown in fig. 6, in one embodiment, the adder output module 500 includes an operational amplifier 510, and the unit model of the operational amplifier 510 is SGM8632.
As shown in fig. 8, in one embodiment, the power module 700 includes a voltage boost unit 710, and the chip type of the voltage boost unit 710 is HX4002B.
The signal input terminal of the pickup audio input module 100 is electrically connected to the pickup of the electric guitar, one end of the resistor R38 of the pickup audio input module 100 is connected to the MIC4 pin of the sound processing unit 410 of the sound processing module 400, and the sound effect is achievedDAC of sound effect processing unit 410 of processing module 400 — The L pin is connected to one end of the capacitor C46 of the sound control module 300, the D pole of the fet M1 of the sound control module 300 is connected to one end of the resistor R18 of the adder output module 500, the connection terminal JK2 of the external audio input module 200 is connected to the external audio, one end of the resistor R13 of the external audio input module 200 is connected to one end of the resistor R18 of the adder output module 500, the connection terminal CN1 of the adder output module 500 may be connected to an external speaker, or may be connected to one end of the capacitor C26 of the earphone amplification module 600 through the third terminal.
When playing an electric guitar, the sound pickup audio input module 100 acquires audio information of playing through a sound pickup, the audio information of playing sequentially passes through the sound effect processing module 400 and the sound effect control module 300 to be sequentially processed and then is sent to the adder output module 500, the external audio input module 200 acquires audio information of accompaniment and sends the audio information of the accompaniment to the adder output module 500, the two kinds of audio information are mixed through the adder output module 500 and then are output through an external sound box, or output through the earphone amplification module 600, and a player can listen to own playing curved surface through an earphone.
Like this, audio transmission circuit, through adapter audio input module 100, external audio input module 200, sound control module 300, sound processing module 400, adder output module 500, the cooperation setting of earphone amplification module 600, adapter audio input module 100 acquires electric guitar audio information through the adapter, through sound processing module 400, send for adder output module 500 after sound control module 300 handles, send the audio information of accompaniment for adder output module 500 through external audio input module 200, mix the back with two kinds of audio information in adder output module 500 through audio amplifier or earphone amplification module 600 output, make the audio of output more plump, make the player experience feel better.
Further, after the sound pick-up audio input module 100 or the external audio input module 200 or the sound effect control module 300 or the sound effect processing module 400 is damaged, the whole circuit cannot work normally, at this time, one end of the resistor RP2A of the adder output module 500 can be directly connected with the A1 contact of the sound pick-up audio input module 100, so that the audio signal of the sound pick-up is directly output from a sound box or an earphone, and the normal operation of the whole module is ensured.
Further, the audio transmission circuit further includes a microphone audio input module 800, and a signal output end of the microphone audio input module 800 is connected to a signal input end of the adder output module 500.
Thus, one end of the resistor R23 of the microphone audio input module 800 is connected to one end of the resistor R18 of the adder output module 500, and through the setting of the microphone audio input module 800, three audio information, i.e., audio information of playing guitar, audio information of accompanying music and audio information of singing, are mixed through the adder output module 500 and then output from a sound box or an earphone, so that a player can play while singing, and the experience of the player is better.
In one embodiment, the audio transmission circuit further includes an indicator light module 900, and a signal input terminal of the indicator light module 900 is connected to a signal output terminal of the microphone audio input module 100.
In this way, the output terminal of U3 of the indicator module 900 is connected to the B1 contact of the sound pickup audio input module 100, and when audio information of the sound pickup is input, the indicator module 900 is turned on to remind the player of the input of the audio information.
Further, the headphone amplification module 600 includes an audio amplification unit 610, and a unit model of the audio amplification unit 610 is 8002B.
8002B is a 3W, single-channel AB-class audio power amplifier chip. The working voltage is 2V-6V, and the output power with THD less than 10% and average 3.0W can be provided for a 3 omega load under the 5V power supply voltage in a BTL bridge connection mode. In the off mode, the current typical value is less than 0.5uA.8002B is designed specifically to provide high power, high fidelity audio output, requires only a small number of peripheral components, and can operate at low voltage (2V-6V). 8002B does not require coupling capacitors, bootstrap capacitors or buffer networks, and is therefore well suited for low power systems with low volume.
Further, the adder output module 500 includes an operational amplifier 510, and a unit model of the operational amplifier 510 is SGM8632. The SGM8632 is a series of single and dual operational amplifiers optimized for low voltage, low noise and low power operation. These devices can operate on a single power supply of 2V to 5.5V while consuming low quiescent current. In the power down mode, the supply current of the SGM8632 is less than 1 μ Α.
Further, the power module 700 includes a voltage boost unit 710, and a chip model of the voltage boost unit 710 is HX4002B. HX4002B is a low noise, 1.2MHz fixed frequency capacitive voltage multiplier. If the load current is less than 45mA, the light load mode will start. HX4002B-3.3 requires a minimum input voltage of 1.8V (2 alkaline cells) to provide a fixed output of 3.3V.
All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (8)
1. An audio transmission circuit, characterized by: including adapter audio input module, external audio input module, the audio control module, the audio processing module, adder output module, earphone amplifier module, power module, the signal output part of adapter audio input module is connected with the signal input part of audio processing module, the signal output part of audio processing module is connected with the signal input part of audio control module, the signal output part of audio control module is connected with adder output module's signal input part, the signal output part of external audio input module is connected with adder output module's signal input part, adder output module's signal output part is connected with earphone amplifier module's signal input part, power module respectively with adapter audio input module, external audio input module, audio control module, audio processing module, adder output module, earphone amplifier module electric connection.
2. The audio transmission circuit according to claim 1, wherein: the audio transmission circuit further comprises a microphone audio input module, and the signal output end of the microphone audio input module is connected with the signal input end of the adder output module.
3. The audio transmission circuit according to claim 1, wherein: the audio transmission circuit further comprises an indicator light module, and a signal input end of the indicator light module is connected with a signal output end of the sound pick-up audio input module.
4. The audio transmission circuit according to claim 1, wherein: the sound effect control module comprises a sound effect control unit, and the unit model of the sound effect control unit is PIC10F200.
5. The audio transmission circuit according to claim 1, wherein: the sound effect processing module comprises a sound effect processing unit, and the unit model of the sound effect processing unit is AP8248A2.
6. The audio transmission circuit according to claim 1, wherein: the earphone amplification module comprises an audio amplification unit, and the unit model of the audio amplification unit is 8002B.
7. The audio transmission circuit according to claim 1, wherein: the adder output module comprises an operational amplifier, and the unit model of the operational amplifier is SGM8632.
8. The audio transmission circuit according to claim 1, wherein: the power module comprises a boosting unit, and the chip model of the boosting unit is HX4002B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222820873.XU CN218240722U (en) | 2022-10-26 | 2022-10-26 | Audio transmission circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222820873.XU CN218240722U (en) | 2022-10-26 | 2022-10-26 | Audio transmission circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218240722U true CN218240722U (en) | 2023-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222820873.XU Active CN218240722U (en) | 2022-10-26 | 2022-10-26 | Audio transmission circuit |
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|---|---|
| CN (1) | CN218240722U (en) |
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- 2022-10-26 CN CN202222820873.XU patent/CN218240722U/en active Active
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