Method for controlling alternating output of sound frequency

Abstract

The invention discloses a method for controlling sound frequency alternating output, which comprises the following steps of: dividing an output frequency band into a plurality of DF frequency bands according to a personal minimum frequency identification bandwidth measured by a frequency identification test method, and averagely dividing each DF frequency band in the step S1 into a plurality of sub-frequency bands, coding serial numbers, grouping sub-frequency bands with the same serial numbers in each DF frequency band, forming an independent output program by each group, regularly outputting the output programs in a staggered manner to form a smooth and complete sound output signal, and the like. In the whole output process, the hearing impairment patient does not feel the conditions of sound tone modification distortion and the like, that is to say, the human ears do not feel consciousness in the program switching process, so that the listening effect is not influenced at all, and the listening effect can be improved through the method. Therefore, the inner ear hair cells of the hearing loss patient can alternately obtain the rest time in the listening process and cannot be completely activated, auditory fatigue is effectively prevented, and residual hearing is better protected.

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 value of the frequency difference detected by the human ear (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 healthy human ear has a very strong ability to distinguish frequencies. 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 ...

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