Bone conduction hearing aid sound signal matching gain compensation method and device

Abstract

The invention provides a sound signal matching gain compensation method and equipment for a bone conduction hearing aid. The method comprises the following steps: dividing sound received by a hearing-impaired patient into a plurality of frequency bands to obtain expected input sound of each frequency band; obtaining a dimensionless expected input sound of each frequency band; acquiring external sound received by the bone conduction hearing aid, dividing the external sound into the plurality of frequency bands, combining the volume amplitude of each frequency band with the corresponding frequency, and performing dimensionless treatment on a combination result to obtain dimensionless composite sound of each frequency band; and performing gain compensation on the dimensionless composite sound of each frequency band to obtain an actual input sound of each frequency band, comparing the actual input sound of each frequency band with the dimensionless expected input sound of each frequency band, and determining a final gain compensation amount. According to the invention, the volume of the sound heard by the hearing-impaired patient tends to be stable, and the hearing of the hearing-impaired patient is protected from being damaged by high-decibel noise.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of bone conduction hearing aids, and in particular, to a method and device for compensating sound signal matching gain of bone conduction hearing aids. Background technique [0002] Bone conduction hearing aids are widely used in daily life due to their special conduction principle. Existing bone conduction hearing aids amplify the sound received by the microphone in the full frequency range, and then push it into the earphone so that the hearing-impaired patient can hear the sound. In practical applications, the hearing loss of many hearing-impaired patients is not the loss of full-band function, but the full-band gain compensation will cause the hearing-impaired patients to hear louder and quieter sounds, even in some scenes with more high-frequency sounds. When the low-frequency scene sound is superimposed with the gain compensation of this frequency band, the decibels will be too h...

AI Technical Summary

Problems solved by technology

In practical applications, the hearing loss of many hearing-impaired patients is not the loss of full-band function, but after full-band gain compensation, the sound heard by the hearing-impaired patients will fluctuate, even in some scenes with more high-frequency sounds The decibels will be too high after the low-frequency scene sound is superimposed with the gain compensation of this frequency band, and in severe cases, it may even damage the hearing function of the unimpaired part of the hearing-impaired patient

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