Auditory feedback regulating method and system based on stimulus frequency otoacoustic emission

Abstract

The invention provides an auditory feedback regulating method and an auditory feedback regulating system based on stimulus frequency otoacoustic emission. The method comprises the following steps: selecting a first sweep frequency signal and a second sweep frequency signal with frequencies continuously changing with time; selecting a regulating signal; performing parameter setting on the first sweep frequency signal, the second sweep frequency signal and the regulating signal; playing the first sweep frequency signal, the second sweep frequency signal and the regulating signal, parameters of which are set, in a five-section combination mode; while playing each section, recording time domain response in an ear at the same side within the time; extracting an auditory emitting signal through a dislocation phase elimination method according to the time domain response; extracting a sweep frequency SFOAE signal in the auditory emitting signal through a dynamic tracing filter; performing time domain analysis according to the sweep frequency SFOAE signal. The auditory feedback regulating method can be used for solving a problem of exploring an auditory feedback regulating mechanism under a noninvasive condition, so that objective basis is provided for the noninvasive detection of auditory nerve abnormality.

Description

technical field [0001] The present invention relates to the technical field of feedback regulation, in particular to the feedback regulation technology of the auditory system, specifically an auditory feedback regulation method and system based on stimulus frequency otoacoustic emissions (SFOAE, stimulus frequency otoacoustic emissions). Background technique [0002] The auditory system is one of the five sensory systems of human beings, and it is an important channel for human beings to perceive and understand the sound world around them. The physiological structure of the auditory system consists of two parts: the auditory periphery (outer ear, middle ear, inner ear) and the auditory center. The cochlea in the inner ear is responsible for converting external sound signals into corresponding neural electrical signals, which are sent to the auditory center of the brain by the auditory nerve for further processing, and finally realize the auditory experience. Studies have pr...

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Problems solved by technology

[0006] In order to solve the problem of discrepancy or even inconsistency in the research results of auditory feedback mechanism due to the insufficiency of the existing middle ear acoustic emission detection methods, the present invention provides an auditory feedback adjustment method and system based on stimulation frequency otoacoustic emission. The scheme of applying SFOAE to the study of auditory feedback regulation mechanism is proposed. SFOAE is induced by a single sound and is directly generated by the hair cells corresponding to the stimulating sound frequency. The generation mechanism is relatively simple, and the signal is closely related to the state of the hair cells at the same characteristic frequency. , the frequency-sweeping SFOAE detection technology can overcome the deficiencies of current otoacoustic emission detection methods, and quickly realize high-efficiency and high-resolution detection in the human hearing frequency range, so as to study the auditory feedback regulation mechanism more comprehensively

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