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Method and device for sending and receiving audio signals

A technology of audio signal and sending device, which is applied in the field of communication and can solve problems such as low baud rate

Active Publication Date: 2018-04-24
NATIONZ TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a method and device for sending and receiving audio signals, aiming to solve the problem that the terminal equipment provided by the prior art has a relatively low baud rate when performing audio communication

Method used

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  • Method and device for sending and receiving audio signals
  • Method and device for sending and receiving audio signals
  • Method and device for sending and receiving audio signals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] figure 1 The implementation flow of the method for sending an audio signal provided by Embodiment 1 of the present invention is shown, and the sending is taken as an example for illustration, and the details are as follows:

[0058] In step S101, the audio data to be sent is divided into at least two data packets.

[0059] In this embodiment, the audio data to be sent is divided into packets with a predetermined length, and divided into at least two data packets. For example, if the length of the audio data to be sent is 16 bits and the predetermined length is 4 bits, the audio data to be sent may be divided into four 4-bit data packets.

[0060] In step S102, divide every two data packets into a group.

[0061] In this embodiment, every two data packets are divided into a group, and all data packets are divided into several groups. If the number of data packets obtained by step S201 is an odd number, the last data packet and an all-0 Packets combined, the two form a...

Embodiment 2

[0071] figure 2 The implementation flow of the method for sending an audio signal provided by Embodiment 2 of the present invention is shown, and the sending end is taken as an example for illustration, and the details are as follows:

[0072] In step S201, the audio data to be sent is divided into at least two data packets.

[0073] In step S202, divide every two data packets into a group.

[0074] In step S203, calculate the value of the difference OR after every two data packets, and use this value as the third data packet in this group.

[0075] In the embodiment of the present invention, the value of the two data packets in each group after XOR processing is calculated, and this value is used as the third data packet in this group.

[0076] In step S204, pre-selected carrier signals of different frequencies are used to encode each data packet in each group to obtain encoded symbol sample point values, and the symbol sample point values ​​are superimposed to generate su...

Embodiment 3

[0089] Figure 4 The implementation flow of the audio signal receiving method provided by Embodiment 3 of the present invention is shown, and the receiving end is taken as an example to illustrate, and the details are as follows:

[0090] In step S401, start the recording module to record audio signals and generate recording files.

[0091] In the embodiment of the present invention, the receiving end first performs system initialization, starts the recording module to record audio signals, and generates recording files.

[0092] In step S402, according to the frequency value of the carrier signal selected by the sending end, a decoding thread of carrier signals of different frequencies is started, and the audio file is decoded by the decoding thread.

[0093] In the embodiment of the present invention, the receiving end can start decoding threads of carrier signals of different frequencies according to the frequency value of the carrier signal selected by the sending end, an...

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Abstract

The present invention is applicable to the technical field of communication, and provides a method and device for sending and receiving audio signals. The method includes: dividing audio data to be sent into at least two data packets; dividing every two data packets into one group; each data packet in each group is encoded by pre-selected carriers of different frequencies to obtain encoded symbol sample point values, and the symbol sample point values ​​are superimposed to generate superimposed sample point value data; control The speaker sends the superimposed sample value data to the receiving end. In the present invention, since the two data packets in each group are modulated and coded by carrier signals of different frequencies, each carrier signal carries different data content, and the two data packets are simultaneously sent to the receiver at the same time by means of data superposition. terminal, which can increase the communication rate of audio data.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a method and device for sending and receiving audio signals. Background technique [0002] Today, with the popularity of smart phones, the external communication interfaces and peripheral devices of mobile phones are also various, and the audio input and output interfaces are the most versatile. Basically all mobile phones and tablet computers have audio input and output such as speakers and microphones. Interface, so audio communication systems and applications will gradually become popular. [0003] However, since the voltage of the audio signal input or output through the audio input and output interfaces of terminal devices such as mobile phones and tablet computers (including the audio signal recorded by the microphone MIC and the audio signal played by the speaker) is relatively small, basically in the millivolt level, It is very susceptible to interferen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L19/00
CPCH04B11/00H04L1/0057
Inventor 苏伟肖德银
Owner NATIONZ TECH INC