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Processing method and device for voice signals of cochlear implant

A voice signal, cochlear implant technology, applied in speech analysis, ear therapy, physical therapy, etc., can solve the problems of limited voice information transmission, low voice recognition rate of cochlear implants, etc. Select and avoid the effect of mutual interference

Active Publication Date: 2019-06-18
SHENZHEN INSTITUTE OF INFORMATION TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a method and device for processing voice signals of a cochlear electronic device, so as to solve the problems in the prior art that the transmission of voice information is limited and the speech recognition rate of the electronic cochlear is low.

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  • Processing method and device for voice signals of cochlear implant
  • Processing method and device for voice signals of cochlear implant
  • Processing method and device for voice signals of cochlear implant

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Embodiment 1

[0048] figure 1It is a schematic flowchart of a method for processing voice signals of a cochlear electronic provided in Embodiment 1 of the present invention. This embodiment is applicable to the process of encoding and transmitting voice signals by an external machine of a cochlear electronic. This method can be executed by a processor. The processing The processor can be configured on a processor on a single-chip microcomputer or a microprocessor of other processing devices. In this embodiment, a processor with a single-chip microcomputer as a carrier is selected as the execution subject. The method specifically includes the following steps:

[0049] S110. Perform pre-emphasis processing on the collected voice signal;

[0050] When the electronic cochlear collects the voice information, the microphone and the front-end signal acquisition circuit of the external machine of the electronic cochlear realize the collection of the voice information and generate the voice signal. ...

Embodiment 2

[0083] figure 2 It is a schematic flowchart of a method for processing a voice signal of a cochlear electronic provided in Embodiment 2 of the present invention. On the basis of Embodiment 1, this embodiment also provides a process of selecting M stimulation channels in time sequence from the N channels corresponding to the N subband signals, so as to ensure that the selected transmission signal channels are spaced apart. The method specifically includes:

[0084] S210. Perform pre-emphasis processing on the collected voice signal;

[0085] S220. Perform frequency band division on the speech signal after pre-emphasis processing to obtain N sub-band signals; wherein, each of the sub-band signals corresponds to a channel, and N is the number of channels, and N>0;

[0086] S230. Perform envelope extraction on each of the subband signals, and generate N subband signal envelopes corresponding to the N subband signals;

[0087] S240. Perform a remainder operation according to th...

Embodiment 3

[0100] Such as image 3 As shown, it is a schematic structural diagram of a processing device for a voice signal of a cochlear electronic device according to an embodiment of the present invention. An embodiment of the present invention provides a device for processing voice signals of a cochlear electronic device, the device comprising:

[0101] The signal processing module 301 is configured to perform pre-emphasis processing on the collected speech signal.

[0102] In one embodiment, when the signal processing module 301 performs pre-emphasis processing on the collected speech signal, the signal processing module further includes:

[0103] a signal conversion unit, configured to convert the pre-emphasized speech signal into a digital signal;

[0104] The signal adjustment unit is configured to perform signal equalization and gain adjustment processing on the digital signal.

[0105] A frequency band division module 302, configured to perform frequency band division on the...

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Abstract

The invention provides a processing method and device for voice signals of a cochlear implant. The method comprises the steps as follows: performing pre-emphasis processing on acquired voice signals;performing band allocation on the voice signals after pre-emphasis processing to obtain N sub-band signals, wherein each sub-band signal corresponds to one channel, and N is the channel number and larger than 0; performing envelope extraction on each sub-band signal to generate N sub-band signal envelopes corresponding to the N sub-band signals; according to a preset stimulation number M, selecting M stimulation channels from N channels corresponding to the N sub-band signals in the time sequence to generate a current stimulation sequence composed of M sub-band signal envelopes corresponding to the M stimulation channels, wherein M is larger than 0 and smaller than N; modulating sub-band signal envelopes in the current stimulation sequence to generate a total modulated signal; compressingthe total modulated signal and sending the compressed total modulated signal to an in-vivo machine of the cochlear implant. The problems of voice information transmission limitation and lower voice recognition rate of the cochlear implant in the prior art are solved.

Description

technical field [0001] The invention belongs to the technical field of speech signal processing, in particular to a method and device for processing speech signals of an electronic cochlea. Background technique [0002] The main cause of deafness in most cochlear implant users is damage to hair cells rather than auditory neurons. Cochlear implant users can directly excite the residual auditory nerve in the cochlea through functional electrical stimulation. When a weak electrical pulse acts on the auditory nerve, the auditory nerve can be induced to be excited, and the excitement is transmitted to the brain along the auditory pathway to produce auditory perception. Therefore, as an alternative device, the cochlear electron replaces the functions of the outer ear, middle ear and part of the inner ear cochlea, directly converts the voice signal into a weak electrical pulse signal, and stimulates the auditory nerve to produce a nerve firing pattern similar to that of the normal...

Claims

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Application Information

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IPC IPC(8): A61F11/04A61N1/36G10L25/18G10L25/48
Inventor 陈又圣
Owner SHENZHEN INSTITUTE OF INFORMATION TECHNOLOGY
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