Echo cancellation method, device, medium, speech wake-up method and device

An echo cancellation and voice wake-up technology, which is applied in speech recognition, voice analysis, instruments, etc., can solve the problems of inability to eliminate the echo signal cleanly and the voice wake-up effect is poor, and achieve the effect of improving the voice wake-up effect and the echo cancellation effect.

Active Publication Date: 2019-02-19
SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD
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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 an echo cancellation method, device, medium, and voice wake-up method and equipment, which solves the problem that the echo ca

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  • Echo cancellation method, device, medium, speech wake-up method and device
  • Echo cancellation method, device, medium, speech wake-up method and device
  • Echo cancellation method, device, medium, speech wake-up method and device

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Embodiment 1

[0029] figure 1 It is a flow chart of the echo cancellation method provided by Embodiment 1 of the present invention. The technical solution of this embodiment is applicable to the situation of improving the success rate of voice wake-up. The method can be implemented in software and / or hardware, and configured and applied in system modules. The method specifically includes the following steps:

[0030] S101. Acquire a voice signal to be output by a device to be woken up.

[0031] If the device to be awakened has a playback function, when it is awakened by voice, the initial wake-up voice received by the microphone usually contains an echo, which is generated by the playback signal of the playback mechanism of the device to be awakened. In the scene, it is inconvenient to obtain the actual playback signal, so this embodiment obtains the voice signal to be output. Wherein, the voice signal to be output is a voice output signal on the voice transmission path from the system ...

Embodiment 2

[0040] image 3 It is a structural block diagram of the echo canceling device provided by the embodiment of the present invention. The device is used to execute the echo cancellation method provided by any of the above embodiments, and the device may be implemented by software or hardware. The unit includes:

[0041] The first obtaining module 11 is used to obtain the voice signal to be output of the device to be awakened;

[0042] The wake-up voice determination module 12 is configured to perform echo cancellation on the initial wake-up voice received by the microphone according to the voice signal to be output and the pre-stored device frequency response curve of the device to be woken up to generate the wake-up voice.

[0043] In the technical solution of the echo canceling device provided by the present invention, the audio signal to be output of the device to be awakened is obtained through the acquisition module; the audio signal to be output by the device to be awaken...

Embodiment 3

[0046] Figure 4 It is a flow chart of the voice wake-up method provided by Embodiment 3 of the present invention. The technical solution of this embodiment is applicable to the situation of improving the success rate of voice wake-up. The method can be implemented in software and / or hardware, and configured and applied in system modules. The method specifically includes the following steps:

[0047] S201. Obtain an initial wake-up voice of the device to be woken up through a microphone.

[0048] When waking up the device to be woken up by voice, the echo cancellation module first needs to obtain the initial wake-up voice of the device to be woken up through the microphone. For example, when waking up the TV by voice, the user first speaks the wake-up voice to the microphone, and the echo cancellation module obtains the initial wake-up voice including the wake-up voice and the playback signal output by the TV broadcast mechanism through the microphone.

[0049] S202. Deter...

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Abstract

The embodiments of the present invention disclose an echo cancellation method, an echo cancellation device, a medium, a speech wake-up method and a speech wake-up device. The echo cancellation methodincludes the following steps that: the to-be-outputted speech signals of a device to be awakened are obtained; and echo cancellation is performed on initial wake-up speech received by a microphone according to the to-be-output speech signals and the pre-stored device frequency response curve of the device to be awakened, so that wake-up speech can be generated. With the echo cancellation method, the echo cancellation device, the medium, the speech wake-up method and the speech wake-up device in the prior art adopted, the technical problem that an echo cancellation method in the prior art generally fails to completely eliminate echo signals generated by playing signals in initial wake-up speech can be solved; an echo cancellation effect is improved; and the success rate of speech wake-up can be increased.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of voice processing, and in particular, to an echo cancellation method, device, medium, and voice wake-up method and device. Background technique [0002] When waking up the device to be woken up by voice, the initial wake-up voice is usually obtained through the microphone of the device to be woken up, and then the initial wake-up voice is processed to extract a wake-up signal. Wherein, when processing the initial voice, if there is external voice in the device to be woken up, it is necessary to consider adopting echo cancellation technology to remove the echo signal generated by the playback signal in the initial wake-up voice. [0003] The existing technology is to collect the audio signal at the power amplifier output of the device to be awakened, and then directly transmit it to the AEC (acoustic echo cancellation, echo cancellation) module via I2S (integrated circuit audio bus) as...

Claims

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Application Information

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IPC IPC(8): G10L15/22G10L21/0208
CPCG10L15/22G10L21/0208G10L2015/223G10L2021/02082
Inventor 刘鹏
Owner SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD
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