Method and equipment with separating compressor in control hearing aid
A compressor and band separation technology, applied in hearing aids, gain control, amplification control, etc., to achieve the effect of avoiding spectrum ambiguity
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[0032] [0032] The present invention relates to an improved method whereby an input sound signal is filtered into a number of frequency bands to obtain a band-separated signal and to compress the band-separated signal in a hearing aid for hearing impaired persons in order to achieve not only speech audibility and intelligibility, Also spectral ambiguity in the output sound signal is reduced.
[0033] [0033] FIG. 2 shows a block diagram of a first embodiment of a hearing aid according to the invention. The signal path of the hearing aid 200 includes an input transducer or microphone 214, which transforms an acoustic input sound signal into an electrical input sound signal 226; a band separation filter 202, which receives the electrical input sound signal and splits it into a number of frequency bands to obtain a band splitter. Separate signals 218-1, 218-2, . . . , 218-n. The individual band-separated signals are then provided to signal level estimating units 210-1, 210-2, . . ...
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