CN212785812U - Audio automatic switching circuit with double audio input, double audio acquisition and double audio output - Google Patents
Audio automatic switching circuit with double audio input, double audio acquisition and double audio output Download PDFInfo
- Publication number
- CN212785812U CN212785812U CN202021931746.1U CN202021931746U CN212785812U CN 212785812 U CN212785812 U CN 212785812U CN 202021931746 U CN202021931746 U CN 202021931746U CN 212785812 U CN212785812 U CN 212785812U
- Authority
- CN
- China
- Prior art keywords
- audio
- pin
- dual
- jack
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Circuit For Audible Band Transducer (AREA)
Abstract
The utility model discloses a two audio input two audio acquisition two audio output's audio frequency automatic switch-over circuit, concretely relates to light cube audio frequency switching control field. Two audio input two audio acquisition two audio output's audio frequency automatic switch circuit, including audio input and output module, second audio jack, bluetooth music module, 0 ohm magnetic bead and built-in speaker, 0 ohm magnetic bead is used for connecting analog ground AGND and digital ground GND. The audio input and output module is provided with a first audio jack, and the 3 rd pin of the second audio jack is connected with an A/D sampling port of the microcontroller and used for carrying out fast Fourier transform on data after audio signals are collected. The automatic switching circuit realizes automatic switching of dual-audio input, dual-audio acquisition and dual-audio output.
Description
Technical Field
The utility model relates to a light cube audio frequency switching control field, concretely relates to two audio frequency automatic switch-over circuit of two audio output of two audio frequency input collection.
Background
A general audio switching circuit is only used for switching output, such as a mobile phone or a computer, which is originally provided with a speaker, but if an earphone or a sound box is plugged in, sound is switched from the speaker provided with the mobile phone to the earphone.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the aforesaid not enough, provide an audio frequency automatic switch-over circuit that dual audio input, dual audio frequency collection and dual audio output can both automatic switch-over.
The utility model discloses specifically adopt following technical scheme:
two audio input and two audio acquisition two audio output's audio frequency automatic switch circuit, including audio input and output module, second audio jack, bluetooth music module and microcontroller, audio input and output module are equipped with first audio jack, and the AD sampling port of microcontroller is connected to the third pin of second audio jack for carry out fast Fourier transform to data behind the collection audio signal.
Preferably, a 0 ohm magnetic bead is further included for connecting the analog ground AGND and the digital ground GND.
Preferably, a built-in speaker is also included.
Preferably, the first audio jack and the second audio jack each include 1 st pin to 6 th pin.
Preferably, the 1 st pin and the 2 nd pin of the first audio jack and the second audio jack are both ground wires, the 3 rd pin is a right sound channel, the 4 th pin is a left sound channel, the 5 th pin and the 6 th pin are both jacks, the 5 th pin is connected with the 3 rd pin when not being inserted, and is disconnected with the 3 rd pin after being inserted, the 6 th pin is connected with the 4 th pin when not being inserted, and is disconnected with the 4 th pin after being inserted.
The utility model discloses following beneficial effect has:
when the audio jack PJ2 is not connected with an external sound box, a loudspeaker of the system is used for sounding; when the audio jack PJ2 is externally connected with the sound box, the loudspeaker of the system does not sound, and the sound box sounds.
The audio automatic switching circuit for double audio input and double audio acquisition and double audio output can realize the switching of audio input besides the automatic output switching: when audio jack PJ1 is not connected, the system sound comes from the bluetooth music module, and when audio jack PJ1 is connected externally to the sound source, the system sound comes from the device connected to PJ 1.
Besides, the circuit also needs to collect audio signals, and then the light cube is enabled to jump along with music after fast Fourier transform (namely, music spectrum function). This audio signal will also switch with the switching of the input.
Drawings
Fig. 1 is an audio automatic switching circuit for dual audio input and dual audio acquisition and dual audio output.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
referring to fig. 1, the automatic audio switching circuit for dual audio input and dual audio acquisition and dual audio output includes an audio input and output module, a second audio jack, a bluetooth music module, a microcontroller, a 0 ohm magnetic bead and a built-in speaker, wherein the 0 ohm magnetic bead is used for connecting an analog ground AGND and a digital ground GND. The audio input and output module is provided with a first audio jack, and a third pin of the second audio jack is connected with an A/D sampling port of the microcontroller and used for carrying out fast Fourier transform on data after audio signals are collected.
The first audio jack and the second audio jack respectively comprise 1 st pin to 6 th pin, the 1 st pin and the 2 nd pin of the first audio jack and the second audio jack are both ground wires, the 3 rd pin is a right sound channel, the 4 th pin is a left sound channel, the 5 th pin and the 6 th pin are jacks, the 5 th pin is connected with the 3 rd pin when not being inserted, is disconnected with the 3 rd pin after being inserted, is connected with the 4 th pin when not being inserted, and is disconnected with the 4 th pin after being inserted.
The working principle of the automatic audio switching circuit for double-audio input and double-audio acquisition and double-audio output is as follows;
when the first audio jack is not externally connected with audio, the second audio jack is not externally connected with a sound box, the collected audio signals are audio signals of the Bluetooth music module, the built-in loudspeaker produces sound, and the external audio equipment does not produce sound. I.e., the first audio jack PJ1 is not connected to an external audio device, pins 3 and 5 of the PJ1 (connected to pin 4 of the bluetooth music module) are connected together, pin 3 of the PJ1 is connected to pin 3 of the first audio jack PJ2, and pin 3 of the PJ2 is connected to the a/D sample port of the microcontroller, so that the captured audio signal comes from the bluetooth music module. The 3 rd pin of the Bluetooth music module is connected with the 4 th pin of the PJ1, the 4 th pin of the PJ1 is connected with the 4 th pin of the PJ2, and the 4 th pin of the PJ2 is connected with the 6 th pin, so that the input of the built-in loudspeaker is equivalent to the direct connection with the 3 rd pin of the Bluetooth music module, and the built-in loudspeaker produces sound.
When the first audio jack is not externally connected with audio, the second audio jack is externally connected with a loudspeaker box, the collected audio signal is the audio signal of the Bluetooth music module, the built-in loudspeaker does not sound, and the external audio equipment sounds.
When the first audio jack is externally connected with audio, the second audio jack is not externally connected with the loudspeaker box, the collected audio signals are audio signals of external audio equipment, the built-in loudspeaker produces sound, and the external audio equipment does not produce sound.
When the first audio jack is externally connected with audio, the second audio jack is externally connected with a sound box, the collected audio signals are audio signals of external audio equipment, the built-in loudspeaker does not sound, and the external audio equipment sounds.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.
Claims (5)
1. The automatic audio switching circuit is characterized by comprising an audio input and output module, a second audio jack and a Bluetooth music module, wherein the audio input and output module is provided with a first audio jack, and a 3 rd pin of the second audio jack is connected with an A/D sampling port of a microcontroller and used for carrying out fast Fourier transform on data after audio signals are collected.
2. The dual audio input dual audio capture dual audio output audio auto-switching circuit of claim 1 further comprising a 0 ohm bead for coupling an analog ground AGND and a digital ground GND.
3. The dual audio input dual audio capture dual audio output audio auto-switching circuit of claim 1 further comprising a built-in speaker.
4. The dual audio input dual audio capture dual audio output audio automatic switching circuit of claim 1 wherein the first audio jack and the second audio jack each comprise pins 1 through 6.
5. The dual audio input dual audio capture dual audio output audio automatic switching circuit of claim 1 wherein pins 1 and 2 of the first audio jack and the second audio jack are both ground, pin 3 is a right channel, pin 4 is a left channel, pins 5 and 6 are both jacks, pin 5 is connected to pin 3 when not inserted, and disconnected from pin 3 when inserted, pin 6 is connected to pin 4 when not inserted, and disconnected from pin 4 when inserted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021931746.1U CN212785812U (en) | 2020-09-07 | 2020-09-07 | Audio automatic switching circuit with double audio input, double audio acquisition and double audio output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021931746.1U CN212785812U (en) | 2020-09-07 | 2020-09-07 | Audio automatic switching circuit with double audio input, double audio acquisition and double audio output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212785812U true CN212785812U (en) | 2021-03-23 |
Family
ID=75064920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021931746.1U Active CN212785812U (en) | 2020-09-07 | 2020-09-07 | Audio automatic switching circuit with double audio input, double audio acquisition and double audio output |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212785812U (en) |
-
2020
- 2020-09-07 CN CN202021931746.1U patent/CN212785812U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10483599B2 (en) | Magnetically attached battery pack with audio interface | |
| CN203167074U (en) | Mobile terminal configured with reuse interface | |
| TW200420075A (en) | Combined and standalone hand held mobile communication system | |
| CN102073470B (en) | Electronic equipment and control method thereof | |
| CN101170325A (en) | Bluetooth wireless microphone | |
| CN201585236U (en) | Vehicular digital multimedia playing equipment | |
| CN201898602U (en) | Passive sound box interface of mobile phone | |
| CN212785812U (en) | Audio automatic switching circuit with double audio input, double audio acquisition and double audio output | |
| CN105142072A (en) | Audio apparatus with externally connected player and audio playing method thereof | |
| CN202634658U (en) | Multifunctional bluetooth earphone | |
| CN202713580U (en) | Earphone compatible interface circuit for terminal device | |
| CN206506651U (en) | Karaoke earphone with Lightning joints | |
| CN201796602U (en) | USB storage equipment and extension device thereof | |
| CN201479354U (en) | Power amplifier muting circuit | |
| CN201413922Y (en) | Pluggable antenna and audio frequency switching device | |
| CN209517434U (en) | A kind of noise reduction folder neck microphone | |
| CN201134803Y (en) | Bluetooth wireless microphone | |
| CN202586955U (en) | Interphone | |
| CN107104642A (en) | A kind of circuit structure for being used to amplify audio signal | |
| CN102724756A (en) | Vehicle caller ID informing device for mobile phone | |
| CN203445999U (en) | Earphone with recording function | |
| CN206097088U (en) | Audio frequency connecting device and use its audio output equipment | |
| CN204929162U (en) | Multi -purpose bluetooth speaker | |
| CN204887472U (en) | Hang portable multi -functional public -address amplifier | |
| CN218415245U (en) | Mobile phone data line with anti-information screen and evidence obtaining system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |