Audio signal processing device

A technology of audio signal processing and audio signal, which is applied in the electronic field to achieve fast interaction, improve success rate, and filter out noise and interference

Inactive Publication Date: 2013-10-09
TENDYRON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides an audio signal processing device to at least solve the problem t

Method used

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Examples

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Embodiment 1

[0038] This embodiment provides an audio signal processing device 10. The audio signal processing device 10 processes the transmitted mechanical waves (sound waves in the present invention) by first sampling and then performing digital filtering.

[0039] Such as figure 1 As shown, the audio signal processing device 10 includes: a first device 20 and a second device 30, wherein the first device 20 includes a first speaker 201, and the first speaker 201 outputs a first audio signal (mechanical wave); the second device 30 Including a first microphone 301 and a first filter 302, wherein the first microphone 301 receives a first audio signal, and samples the first audio signal to generate first audio data; the first filter 302 processes the first audio data The frequency points are filtered to obtain the second audio data.

[0040] It can be seen from the above technical solutions that the audio signal processing device 10 provided in this embodiment can use audio signals for dat...

Embodiment 2

[0053] The first device 20 may also have the functions of the second device 30 at the same time, and similarly, the second device 30 may also have the functions of the first device 20 at the same time. That is to say, the two devices interacting are exactly the same, and both can be used as the sender or the receiver.

[0054] In this example, if image 3 As shown, if the second device 30 needs the function of sending audio signals, the second device 30 may further include a second speaker 304, and the second speaker 304 outputs a second audio signal. Similarly, if the first device 20 needs the function of receiving audio signals, the first device 20 may also include: a second microphone 204 and a second filter 205, the second microphone 204 receives the second audio signal, and the second audio signal Sampling is performed to generate third audio data; the second filter 205 filters the frequency points of the third audio data to obtain fourth audio data.

[0055] The above-...

Embodiment 3

[0063] This embodiment provides an audio signal processing device 40. The audio signal processing device 40 processes the transmitted mechanical wave (sound wave in the present invention) by first performing analog filtering and then sampling.

[0064] Such as Figure 4 As shown, the audio signal processing device 40 includes: a first device 50 and a second device 60, wherein the first device 50 includes a first speaker 501, and the first speaker 501 outputs a first audio signal (mechanical wave); the second device 60 Including: a first microphone 601, a first filter 602 and a first sampling circuit 603, wherein the first microphone 601 receives the first audio signal and sends it to the first filter 602; the first filter 602 is for the first The frequency point of the audio signal is filtered to obtain a second audio signal, and the second audio signal is sent to the first sampling circuit 603; the first sampling circuit 603 samples the second audio signal to generate first a...

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PUM

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Abstract

Provided in the invention is an audio signal processing device that comprises a first device and a second device. The first device includes a first loudspeaker outputting a first audio signal. The second device includes a first microphone and a first filter; the first microphone receives the first audio signal and carries out sampling on the first audio signal to generate first audio data; and the first filter filters frequency points of the first audio data to obtain second audio data. According to the invention, the audio signal is used to carry out data transmission, thereby solving a problem that an audio device with an audio interface can not carry out data transmission by the existing way. During the transmission process, the amplitude of the audio signal is attenuated with increasing of the distance and the frequency of the audio signal is not changed with the distance changing. Therefore, corresponding frequency points of the audio data generated by the microphone are filtered and noises are filtered, thereby obtaining frame head and frame tail information of effective information; and a signal frequency of an effective frequency point is responded according to the information so as to obtain effective information, thereby ensuring accuracy of signal transmission.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to an audio signal processing device. Background technique [0002] In the prior art, data interaction between devices can be realized in many ways, for example, wireless transmission methods such as Bluetooth, infrared, and NFC, and wired transmission methods such as USB interface and audio interface. However, some devices cannot exchange data due to conditional restrictions. [0003] In addition, with the popularization of smart phones, people often use smart phones instead of personal computers for data transmission and processing. device, that is, it does not perform its functions like a USB master interface carried on a PC or a laptop, so if the smartphone is connected to other slave devices (such as a USB flash drive) through the USB interface, the data transmission and processing cannot be completed; then It is necessary to develop whether the audio interface of the sma...

Claims

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Application Information

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IPC IPC(8): H04R3/00
Inventor 李东声
Owner TENDYRON CORP
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