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Harmonic synchronous type electronic cochlea

An electronic cochlear and harmonic technology, applied in the field of microelectronics, can solve the problems of loss of useful information, not suitable for patients, analog stimulation, etc., to reduce power consumption, improve transmission quality, improve frequency characteristics and dynamic characteristics. Effect

Inactive Publication Date: 2005-03-23
NORTHEASTERN UNIV
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AI Technical Summary

Problems solved by technology

However, the existing cochlear electrons either extract the envelope in the frequency spectrum, or extract speech features, or directly simulate analog stimulation, without the function of synchronizing with harmonics, and a large amount of useful information is lost
Therefore, the resulting auditory effect is unnatural, especially the recognition of tones is poor, which is not suitable for patients
In addition, the existing electronic cochleas all use Fourier transform or filter circuits for spectrum analysis, ignoring many characteristics of the natural cochlea

Method used

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Embodiment Construction

[0026] The harmonic synchronous electronic cochlear of the present invention such as figure 1 Shown consists of an in vitro part and an implanted in vivo part. The external part includes: a speech signal input module 1 , a speech signal processing module 2 and a transmitting module 3 . Voice signal input module 1 is made up of the power amplifier 10 of microphone and voice signal input module; Voice signal processing module 2 comprises: resonance type spectrum analysis module 7, harmonic synchronous processing module 8, speech coding module 9; Transmitting module 3 comprises: carrier Modulating circuit 15, power amplifier 16 and transmitting coil 17 of the transmitting module. The internal part includes: a receiving module 4 , a stimulator 5 and a stimulating electrode 6 . The receiving module 4 is composed of a receiving coil 18 , a power amplifier 11 of the receiving module and a detection and demodulation circuit 12 ; the internal modules of the stimulator 5 include: a de...

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Abstract

A harmonic synchronized electronic cochlea with lower speech distortion is composed of external unit and internal unit. Said external unit consists of speech signal input module with microphone and power amplifier, speech signal processing module with resonant spectrum analyzer, harmonic synchronization processing module, speech coding module, and emitting module. Said internal unit comprises receiver module, decoding module of stimulator, stimulating pulse generating module and stimulating electrode.

Description

technical field [0001] The invention belongs to the technical field of microelectronics, and in particular relates to a harmonic synchronous electronic cochlear developed by applying biomedical electronics and other theories. Background technique [0002] The basic principle of the Cochlear Implant is to directly stimulate the auditory nerve in the cochlea of ​​the deaf with weak current pulses to excite it, so that the deaf can obtain hearing. In the study of cochlear implants, the processing of speech signals is very critical, and the effect of auditory restoration is directly related to the processing method of speech signals. [0003] At present, the processing methods of speech signals can be roughly divided into two categories, one is based on feature extraction, that is, extracting characteristic information such as fundamental frequency and formant of speech signals, and then generating corresponding stimulation signals, such as Nucleus' WSP (wearable speech process...

Claims

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Application Information

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IPC IPC(8): A61F11/04A61N1/36
Inventor 王旭万晓颖
Owner NORTHEASTERN UNIV
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