A Method of Controlling the Alternating Output of Sound Frequency

Abstract

The invention discloses a method for controlling the alternating output of sound frequency, which includes: dividing the output frequency band into multiple DF frequency bands according to the personal minimum frequency identification bandwidth measured by the frequency identification test method, dividing each DF frequency band in step S1 It is also divided into multiple sub-bands on average, and numbered, and the sub-bands with the same serial number in each DF band are grouped, each group constitutes an independent output program, and the above-mentioned output programs are regularly staggered and output to form a smooth complete acoustic output signal etc. steps. During the whole output process, hearing-impaired patients will not feel the sound distortion and other situations, that is to say, the human ear has no perception during the program switching process, so the listening effect will not be affected at all. The loss of the inner ear hair cells of the patient can stagger the rest time during the listening process without being fully activated, effectively preventing hearing fatigue and better protecting the residual hearing.

Description

technical field [0001] The invention relates to the field of audiology, in particular to a method for controlling the alternating output of sound frequency. Background technique [0002] Frequency resolution describes the ability of the human ear to hear the difference between the frequencies of two sounds. The frequency resolution is represented by the threshold of the human ear to detect the frequency difference (the minimum detectable frequency difference), which is denoted as DF here. The smaller the DF value, the higher the sensitivity. Generally speaking, as long as the frequency of the sound does not change by more than one DF, the human auditory system cannot detect it. The ability of the healthy human ear to distinguish frequencies is very strong. The auditory bandwidth of the human ear is 20~20kHz, and the frequency resolution ability near 1k~3kHz is the strongest. A simple example: the frequency change of two adjacent keys on the piano is 1 / 12 octave, while the ...

AI Technical Summary

Problems solved by technology

[0003] However, there is a big difference between hearing loss patients and healthy human ears. Their frequency resolution ability is greatly reduced due to the defect of inner ear hair cells. The more severe the hearing loss, the worse the resolution ability, and the greater the DF value

They need to wear hearing aids and other sound amplification devices to improve audibility. However, in order to pursue the same or infinitely close sound quality as the real ear, the current hearing aids require excessively wide output frequency bands and high-fidelity sound quality, etc., without considering Whether the ears of hearing-impaired patients can withstand such sounds

In fact, the hearing ability of hearing-impaired patients is incomparable to that of healthy human ears. Technologies such as broadband and high-fidelity sound quality may instead increase the burden on the ears of hearing-impaired patients, resulting in the phenomenon of "small horses and large carts", which will last for a long time There is even a risk of worsening hearing loss