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Artificial electronic cochlea and method for processing speech with double stimulation rates

A technology of electronic cochlear and speech processor, which is applied in the direction of ear therapy, etc., can solve the problems of inability to take into account information, ambiguity, loss, etc., and achieve the effect of improving the effect of speech recognition

Active Publication Date: 2013-01-16
ZHEJIANG NUROTRON BIOTECH
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Problems solved by technology

[0016] The technical problem to be solved by the present invention is to provide a cochlear implant, a double-stimulation rate speech processing method and a corresponding speech processor, which are used to solve the problem that the speech processor in the existing cochlear implant cannot respond to high and low stimulation frequencies. Taking into account the loss or ambiguity of information caused by patients using cochlear implants

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  • Artificial electronic cochlea and method for processing speech with double stimulation rates
  • Artificial electronic cochlea and method for processing speech with double stimulation rates
  • Artificial electronic cochlea and method for processing speech with double stimulation rates

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Embodiment Construction

[0043] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0044] At present, the ACE strategy can provide a higher stimulation rate, but only stimulates channels with higher envelope amplitudes, and some important low-amplitude envelope information is lost. However, the CIS strategy can only provide a lower stimulation rate when the total stimulation rate is limited, so that the time domain signal (especially the time domain fluctuation signal that is important for speaker gender recognition or tone recognition) cannot be effectively transmitted to artificial electronics. Cochlear patients.

[0045] The present invention aims at the weak signal processing ability defect of the current artificial cochlear and cochlear implant speech processing strategy, and adopts the method of double stimulation rate to overcome the limi...

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Abstract

The invention discloses an artificial electronic cochlea, a speech processor and a method for processing a speech with double stimulation rates. The speed processor and the method are applied to the artificial electronic cochlea, and the method comprises the following steps of: firstly, performing preprocessing, band-pass filtering, half-wave rectification and low-pass filtering on speech signalsto acquire the envelope amplitude of each channel, and adjusting the current amplitude to a working amplitude range; secondly, selecting a plurality of channels of which the envelope amplitudes are more than or equal to a threshold value to form a first part (high-amplitude) channel, and performing pulse sequence modulation with a first (high) stimulation rate on the first part channel; selectinga plurality of channels of which the envelop amplitudes are smaller than the threshold value to form a second part (low-amplitude) channel, and performing pulse sequence modulation with a second (low) stimulation rate on the second part channel; and adopting electronic pulse sequences of the first and second part channels after modulation to stimulate corresponding stimulating electrodes. The artificial electronic cochlea, the speech processor and the method realize the aim of transmitting information on the envelope amplitudes of all the channels to an artificial electronic cochlea patient, and effectively improve the speech recognition effect of the artificial electronic cochlea.

Description

technical field [0001] The invention relates to the technical field of hearing aid equipment, in particular to a cochlear implant, a speech processor and a double-stimulation rate speech processing method. Background technique [0002] Hair cells in the human cochlea are sensory cells that receive sound. Severe hearing loss occurs when cochlear hair cell damage is severe. A cochlear implant is an electronic device that replaces damaged hair cells and regains sound signals through electrical stimulation of the auditory nerve. figure 1 Shown is a diagram of how a cochlear implant works. The cochlear implant consists of two parts: an external device and an internal device. The external part includes a microphone, a speech processor, and a transmitting coil; the internal part includes a receiving coil, a processor, a stimulating electrode, and a reference electrode. [0003] Such as figure 2 As shown, the microphone receives the acoustic signal, and through the speech proce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F11/04
Inventor 傅前杰陈宏斌李亚杰
Owner ZHEJIANG NUROTRON BIOTECH
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