CN212305643U

CN212305643U - Audio deconcentrator

Info

Publication number: CN212305643U
Application number: CN202021197048.3U
Authority: CN
Inventors: 袁丹; 覃勇钊
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-01-05
Anticipated expiration: 2030-06-24

Abstract

The utility model discloses an audio deconcentrator, which relates to the technical field of audio devices and comprises a general input/output end, an audio input end, an audio output end and a master control; the general input/output end, the audio input end and the audio output end are electrically connected with the master control and are in signal connection. The utility model mainly solves the problem that the application range of the patch cord of the Type-C interface to the 3.5mm audio interface is limited; the universal input/output end is connected into the intelligent device, the microphone is connected into the audio input end, the audio output end is connected into the broadcasting device, the analog signal input from the audio input end is converted into a digital signal through the master control and is transmitted to the intelligent device, the digital signal input from the intelligent device is converted into the analog signal through the master control and is output to the broadcasting device through the audio output end, singing can be conveniently realized by utilizing the audio deconcentrator, live broadcasting, sound amplification and sound effect output functions are realized, the application range is improved, economy and convenience are brought to the life of people.

Description

Audio deconcentrator

Technical Field

The utility model relates to an audio frequency device technical field specifically is an audio frequency deconcentrator.

Background

The 3.5mm audio interface gradually disappears in smart devices such as mobile phones, and digital interfaces (such as Type-C, Micro USB, and Lightning interfaces) are used instead, but at present, there are not many audio devices using digital interface input, and therefore, a patch cord for converting the digital interface into the 3.5mm audio interface is widely used.

However, the patch cord for converting the digital interface into the 3.5mm audio interface has limitations, which can only support the use of the headset, but cannot support the audio input device and the audio output device at the same time, and has insufficient support for the devices and limited application range.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an audio frequency deconcentrator can support audio input equipment and audio output equipment simultaneously, has improved the range of application.

In order to achieve the above object, the utility model provides a following technical scheme: an audio deconcentrator comprises a general input/output end, an audio input end, an audio output end and a main control; the general input/output end, the audio input end and the audio output end are electrically connected and in signal connection with the master control.

In the above technical solution, the main control is an audio DSP chip.

In the technical scheme, the universal input/output end is one of a Type-C connector, a Micro USB connector and a Lightning connector; and the D + pin and the D-pin of the universal input/output end are respectively connected with the digital signal input/output pin of the master control.

IN the technical scheme, the audio input end is a 3.5mm interface with an MIC-IN section; and the MIC-IN section of the audio input end is connected to the master control analog signal input pin.

IN the technical scheme, the MIC-IN section of the audio input end is respectively connected to the master control left channel analog signal input pin and the master control right channel analog signal input pin after branching.

In the technical scheme, the audio output end is a 3.5mm joint with an L-OUT section and an R-OUT section; and the master control left channel analog signal output pin is led OUT to an L-OUT section of the audio output end, and the master control right channel analog signal output pin is led OUT to an R-OUT section of the audio output end.

In the above technical solution, the audio splitter further includes a volume + key, a volume-key, and a play/pause key connected to the master control signal.

In the above technical solution, the audio splitter further includes a function key connected to the main control signal.

Compared with the prior art, the beneficial effects of the utility model are that: the audio deconcentrator is characterized in that a universal input/output end is connected into an intelligent device, a microphone is connected into an audio input end, an audio output end is connected into a broadcasting device, an analog signal input from the audio input end is converted into a digital signal through a master control and is transmitted to the intelligent device, and the digital signal input from the intelligent device is converted into an analog signal through the master control and is output to the broadcasting device through the audio output end; the audio line distributor can conveniently realize the functions of singing, live broadcasting, sound amplification and the like, improves the application range, is economical and convenient, and brings convenience and happiness for life of people.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a schematic circuit diagram of the present invention.

The reference signs are: 1. a general purpose input/output terminal; 2. an audio input; 3. an audio output terminal; 4. main control; 5. a circuit board; 6. a housing; 7. volume + key; 8. volume-key; 9. a play/pause key; 10. function keys.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, an audio splitter includes a general input/output port 1, an audio input port 2, an audio output port 3, and a main control 4; the general input/output end 1, the audio input end 2 and the audio output end 3 are electrically connected with the main control 4 and are in signal connection.

Specifically, the main controller 4 is an audio DSP chip of a model MRX3815, which is based on an AP3852, has an EQ, Reverb and Echo effect, embeds a 1M byte tes RAM, has one analog stereo and one I2S digital stereo signal input, and has one analog stereo and one I2S digital stereo signal output.

Part of the pins of the master 4 are defined as follows:

pin 1: LOUT for outputting an analog audio signal of a left channel;

pin 25: USB _ DP, used for connecting D + pin of USB, in order to input/output the digital signal;

pin 26: USB _ DM, used for connecting D-pin of USB, in order to input/output the digital signal;

pin 45: AD2, general I/O interface for inputting key signal;

pin 47: RIN, for inputting the analog audio signal of the right channel;

pin 48: LIN for inputting analog audio signal of left channel;

pin 52: and ROUT for outputting the analog audio signal of the right channel.

This kind of main Circuit of audio deconcentrator carries on Circuit Board 5, this Circuit Board 5 is Printed Circuit Board (Printed Circuit Board, PCB), main control 4 sets up on Circuit Board 5 with the mode of paster, 5 holding of Circuit Board are in engineering plastics material's shell 6, a wire rod is drawn forth to the one end of shell 6, the end of this wire rod sets up to general input/output 1, two wire rods are drawn forth to the other end of shell 6, the end of one of them wire rod sets up to audio input 2, the end of another wire rod sets up to audio output 3, all wire rods all weld on Circuit Board 5, from electric connection and the signal connection who realizes with the main Circuit.

Specifically, the general input/output end 1 is one of a Type-C connector, a Micro USB connector and a Lightning connector; the pin D + and the pin D-of the general input/output end 1 are respectively connected with the digital signal input/output pin of the main control 4, namely, the pin D + of the general input/output end 1 is connected with the pin USB _ DP of the main control 4, and the pin D-of the general input/output end 1 is connected with the pin USB _ DM of the main control 4, so that the intelligent device can transmit digital signals to the main control 4 through the general input/output end 1. Adopt one of Type-C to connect, Micro USB connects and Lightning connects as general input/output end 1, be suitable for intelligent equipment such as most cell-phones, notebook and panel computer to use.

Specifically, the audio input end 2 is a 3.5mm interface with an MIC-IN section, namely a 3.5mm female head, and the MIC-IN section of the audio input end 2 is connected to an analog signal input pin of the main control 4; more specifically, the MIC-IN section of the audio input terminal 2 is branched and then respectively connected to the LIN and RIN pins of the main control 4, so that the microphone can transmit analog audio signals to the main control 4 through the audio input terminal 2.

Specifically, the audio output terminal 3 is a 3.5mm connector having an L-OUT section and an R-OUT section, i.e., a 3.5mm male connector; a left channel analog signal output pin of the main control 4 is led OUT to an L-OUT section of the audio output end 3, namely, an LOUT pin of the main control 4 is led OUT to the L-OUT section of the audio output end 3; a right channel analog signal output pin of the main control 4 is led OUT to an R-OUT section of the audio output end 3, namely, an ROUT pin of the main control 4 is led OUT to the R-OUT section of the audio output end 3; with this connection, the main control 4 is enabled to output analog audio signals to the broadcasting equipment through the audio output terminal 3.

Furthermore, the audio deconcentrator also comprises a volume + key 7, a volume-key 8 and a play/pause key 9 which are in signal connection with the main control 4; specifically, microswitches of the volume + key 7, the volume-key 8 and the play/pause key 9 are welded on the circuit board 5, and buttons of the volume + key 7, the volume-key 8 and the play/pause key 9 are arranged on the same surface of the shell 6, so that the control is convenient; the volume + key 7, the volume-key 8 and the play/pause key 9 are all connected with an AD2 pin of the main control 4, and after the volume + key 7, the volume-key 8 and the play/pause key 9 are pressed down, the main control 4 outputs corresponding instructions to the intelligent device through the universal input/output end 1, so that volume control and play/pause control are realized.

Furthermore, the audio deconcentrator also comprises a function key 10 in signal connection with the main control unit 4; specifically, two function keys 10 are arranged, the micro-switches of the two function keys 10 are welded on the circuit board 5, and the buttons of the two function keys 10 are arranged on the same surface of the shell 6, so that the control is convenient; the two function keys 10 are both connected to the AD2 pin of the main control 4, in this embodiment, the two function keys 10 are an EQ switch and a karaoke switch, respectively, where an audio function is switched when the EQ switch is pressed for each short time, and the karaoke switch is switched to an earphone monitoring (ear return) or an audio sound field effect switching function when the karaoke switch is pressed for each short time.

When the portable audio player is used, the universal input/output end 1 is connected to intelligent equipment such as a mobile phone, a notebook computer, a tablet computer and the like, the microphone is connected to the audio input end 2, and the audio output end 3 is connected to broadcasting equipment such as a portable sound box, a vehicle-mounted sound box or a household sound box and the like; the analog signal input from the audio input end 2 is converted into a digital signal through the main control 4 and is transmitted to the intelligent equipment, and the digital signal input from the intelligent equipment is converted into an analog signal through the main control 4 and is output to the broadcasting equipment through the audio output end 3; through the process, the audio deconcentrator can be used for conveniently realizing the functions of singing, live broadcasting, sound amplification and the like, and the application range is improved.

For example, the user inserts the cell-phone with general input/output 1 of audio deconcentrator, inserts the microphone to the audio input 2 of audio deconcentrator, inserts on-vehicle stereo set or domestic stereo set with audio output 3 of audio deconcentrator, can conveniently sing the song amusement in the car or at home, can also open the EQ switch through function button 10, uses different audios to entertain.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An audio deconcentrator is characterized by comprising a general input/output end, an audio input end, an audio output end and a main control; the general input/output end, the audio input end and the audio output end are electrically connected and in signal connection with the master control.

2. The audio splitter of claim 1, wherein: the master control is an audio DSP chip.

3. The audio splitter of claim 2, wherein: the universal input/output end is one of a Type-C connector, a Micro USB connector and a Lightning connector; and the D + pin and the D-pin of the universal input/output end are respectively connected with the digital signal input/output pin of the master control.

4. The audio splitter of claim 2, wherein: the audio input end is a 3.5mm interface with an MIC-IN section; and the MIC-IN section of the audio input end is connected to the master control analog signal input pin.

5. The audio splitter of claim 4, wherein: and the MIC-IN section of the audio input end is respectively connected into the master control left channel analog signal input pin and the master control right channel analog signal input pin after branching.

6. The audio splitter of claim 2, wherein: the audio output end is a 3.5mm joint with an L-OUT section and an R-OUT section; and the master control left channel analog signal output pin is led OUT to an L-OUT section of the audio output end, and the master control right channel analog signal output pin is led OUT to an R-OUT section of the audio output end.

7. The audio splitter of claim 1, wherein: the system also comprises a volume + key, a volume-key and a play/pause key which are connected with the master control signal.

8. The audio splitter according to claim 1 or 7, wherein: the device also comprises a function key connected with the master control signal.