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Digital deaf-aid frequency response compensation method based on mask curve

A frequency response compensation, masking curve technology, applied in hearing aids, instruments, speech analysis, etc., can solve the problems of speech intelligibility and intelligibility decline, amplify signal components, etc., to achieve the effect of improving intelligibility and intelligibility

Inactive Publication Date: 2006-11-29
北达万坤(北京)科技发展有限公司
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Problems solved by technology

[0009] The present invention proposes a new frequency response compensation method based on the threshold value of human auditory masking, and applies it to digital hearing aids to solve the problem of over-amplification of unperceivable signal components due to neglect of auditory masking effects in existing methods, resulting in speech intelligibility and The problem of reduced intelligibility

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  • Digital deaf-aid frequency response compensation method based on mask curve
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Embodiment Construction

[0038] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings of the present invention.

[0039] In the present invention, a digital hearing aid based on the auditory masking effect of the human ear is realized. The system is built on a common DSP platform, using TI's TMS320VC5509 to complete the entire method, the system sampling rate is 16kHz, 16bit quantization, such as Figure 4 shown.

[0040] The main technologies used in the design are introduced in detail below, including time-frequency domain conversion, division of critical bands, calculation of masking threshold, frequency response compensation and so on.

[0041] 1. Time-frequency domain conversion

[0042] The mutual conversion between time and frequency domain is a necessary step to calculate the masking threshold and then perform frequency response compensation. In the present inven...

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Abstract

A method for compensating frequency response of digital deaf-aid based on masked curve includes techniques of time frequency domain switch-over, critical band division, masking threshold calculation and frequency response compensation to improve hearing threshold rising phenomenon caused by hearing-masking effect.

Description

technical field [0001] The invention belongs to the field of speech signal processing, and relates to a frequency response compensation method of a digital hearing aid device, in particular to a frequency response compensation method of a digital hearing aid device based on the auditory masking characteristic of the human ear. Background technique [0002] Speech communication is the basic way of communication in human society, and it is also one of the basic living abilities of individuals. However, for those deaf patients, the impairment of speech communication due to hearing loss seriously affects their quality of life. This not only brought great pain to himself and his family, but also increased the burden on the whole society. According to a statistics released by the China Disabled Persons' Federation on February 7, 2002, there are 20.57 million disabled people with hearing and speech impairments in my country, accounting for 34.3% of the total number of 60 million d...

Claims

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Application Information

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IPC IPC(8): G10L21/02G10L21/04G10L19/00H04R25/00G10L21/0208G10L21/043
Inventor 迟惠生吴玺宏马强张志平
Owner 北达万坤(北京)科技发展有限公司
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