Special instruments and equipment for hearing rehabilitation

At present, the special instruments and equipment for hearing rehabilitation of hearing-impaired people include “hearing assessment and intervention instrument” and “hearing integrated training instrument”.

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1. Hearing assessment and intervention instrument

According to the different level of children’s understanding of Chinese language, hearing processing training system is a kind of hearing processing software, which is mainly used to train the development ability of patients’ hearing function. Based on the framework of auditory attention, auditory recognition, auditory memory and auditory understanding, the software adopts the advanced technologies at home and abroad, such as voice signal digital processing technology, spectrum synthesis and decomposition technology, multimedia technology and so on. It mainly includes two modules: evaluation and intervention.

(1) basic functions of hearing processing evaluation module:

The auditory processing evaluation module is composed of four parts: auditory attention evaluation, auditory recognition ability evaluation, auditory memory ability evaluation and auditory understanding ability evaluation. The main functions are as follows:

① auditory attention ability evaluation: auditory attention ability evaluation includes stability evaluation of auditory attention, auditory attention evaluation under different task speed requirements, and auditory attention evaluation under background noise interference, etc.

(2) evaluation of auditory recognition ability: the evaluation of auditory recognition ability includes the evaluation of suprasegmental phoneme, vowel recognition and initial recognition.

③ auditory comprehension ability evaluation: auditory comprehension ability evaluation includes single condition, double condition and three condition.

④ auditory memory ability evaluation: auditory memory ability evaluation uses multi-step stories to evaluate, mainly including three-step music, four step music and six step music.

(2) basic functions of auditory processing intervention module:

Auditory processing intervention module consists of four parts: auditory attention, auditory recognition, auditory memory and auditory understanding.

(1) training of auditory attention ability: auditory attention is the premise and foundation of learning vocal language. This system can arouse children’s attention to sound by training three kinds of common materials: shape text, number text and color text. The training forms mainly include listening, choosing and judging.

(2) training of auditory recognition ability: auditory recognition is a necessary condition for learning spoken language. This system can help children to learn the spoken language effectively through the training of vowel recognition and consonant recognition. The training forms mainly include shooting, matching and finding.

(3) training of auditory understanding ability: auditory understanding is an important part of the use of spoken language. This system mainly through the single condition words, the double condition words, the three condition words, the short sentence and the short article five big training. So that children can smoothly carry out daily communication. The training form mainly includes one fight, one choice, one saying and so on.

④ auditory memory training

Auditory memory is an effective guarantee for the use of sound language. Through three steps, four steps and six steps, the system trains children to further code, store and reproduce sound. The training form mainly includes drawing, row by row, thinking, etc.

2. Auditory integrated training instrument

Auditory integrated training instrument is a kind of software developed by digital processing of sound signal and computer multimedia technology. By listening to a group of digitally filtered and recombined music, it can correct the imbalance of sound processing in the auditory system, stimulate the cerebral cortex, improve the behavior disorder and emotional disorder, and indirectly promote the development of listening processing ability. Its main functions include segmented playback, continuous playback and custom playback. Segmented play divides the selected track into different frequency bands for separate play, and the main frequency bands are divided into three categories: 500Hz high pass, 1000Hz high pass and 2000-3000hz band pass, so as to activate part of the auditory nerve. Continuous playing is based on the principle of homogeneity and heterogeneity of music. When music and people’s spiritual rhythm are synchronized, it is easy to resonate with people’s emotions, that is, the principle of homogeneity. When music resonates with people’s emotions, music color emotions can be changed gradually, sadness can be changed into beautiful lyric, anger can be changed into relaxed and happy, that is to say, the principle of “heterogeneity” should be adopted, so that patients can gradually adapt to the low-frequency and medium-frequency on the basis of high-frequency voice treatment, and finally achieve the development of listening processing ability. Customized playback can meet the different training requirements of different researchers and rehabilitation teachers through customized filter parameters.