Hearing-aid device and method based on smart phone

Abstract

The invention discloses a hearing-aid device and method based on a smart phone. The device and method have the advantages that 1) a digital hearing-aid function is realized by the smart phone, use of an expensive special-purposed DSP chip of a digital hearing aid is avoided, the cost can be reduced, convenience is provided for use and carrying, and thus, corrective therapy can be carried out on more patients with hearing impairment; 2) a single-channel microphone of the smart phone is used to realize the digital hearing-aid function, it is not required to use a microphone array to collect signals, and the cost and circuit complexity are reduced; 3) sound signals collected by the microphone of the smart phone are divided into N channels, the hearing compensation parameter of the patients with hearing impairment is adjusted in each channel, so that the hearing compensation effect is better, and use is more comfortable; and 4) in each hearing compensation channel, hearting compensation is carried out by using sound pressure level segmented compression figure line, residual hearing of the patients can be protected, and the compensation effect can be ensured.

Description

technical field [0001] The invention relates to a smart phone-based hearing aid device and an implementation method. Background technique [0002] Hearing loss will seriously affect the physical and mental health of hearing-impaired patients (referred to as hearing-impaired). Wearing hearing aids is currently the most effective means for hearing-impaired patients to improve their hearing. In China, the huge elderly hearing-impaired population, backward hearing aid technology, and the differences between Chinese and English all make the research on Chinese digital hearing aid technology face severe challenges. [0003] Since there are few companies with independent intellectual property rights that can produce special chips for digital hearing aid signal processing, digital hearing aids on the market are expensive. At the same time, because hearing aid fitting requires special hearing test instruments, patients must go to a company with fitting ability. Buy hearing aids at a...

AI Technical Summary

Problems solved by technology

However, according to the audiology literature, the difference between patients' perception of pure tones and speech perception is mainly due to the reduction of time-domain resolution and frequency resolution of patients, that is, the inability to distinguish between time-adjacent and frequency-adjacent signals

In this case, the key frequency band signal enhancement corresponding to the frequency point cannot improve the time domain resolution and frequency resolution

Therefore the speech test that adopts in this patent can not play very good effect

Secondly, the sound compensation device described in this patent compensates the input sound according to the compensation parameters corresponding to the hearing test results, and the compensation parameters are not adjusted with the sound pressure level of the input sound

For hearing-impaired patients, due to the narrowing of the auditory dynamic range, although the minimum sound pressure level they can hear increases, the maximum sound pressure level they can tolerate also decreases.

If the compensation parameters are not adjusted according to the sound pressure level of the input sound, when the sound pressure level signal is input, the compensated signal exceeds the dynamic range of the patient, and the patient will feel that the ear is bursting and it is unbearable

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