Dynamic compression in a hearing aid
First Claim
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1. A hearing aid comprising:
- a multi-channel compressor for compensation of loss of dynamic range, the multi-channel compressor having a digital input for receiving a digital sound signal, and an output for outputting a compressed signal to an amplifier, wherein the amplifier has a selectable gain as a function of frequency for compensation of frequency dependent hearing loss and an output for outputting a processed digital sound signal.
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Abstract
The present invention relates to a hearing aid with a compressor having a low and gain independent delay and low power consumption. The hearing aid comprises a multi-channel compressor for compensation of dynamic range loss and with a digital input for inputting a digital sound signal, and an output connected to an amplifier with a selectable gain as a function of frequency for compensation of frequency dependent hearing loss, and connected to an output for outputting the processed digital sound signal.
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Citations
29 Claims
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1. A hearing aid comprising:
a multi-channel compressor for compensation of loss of dynamic range, the multi-channel compressor having a digital input for receiving a digital sound signal, and an output for outputting a compressed signal to an amplifier, wherein the amplifier has a selectable gain as a function of frequency for compensation of frequency dependent hearing loss and an output for outputting a processed digital sound signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A hearing impairment compensation method comprising:
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converting sound into an electrical signal, compressing the electrical signal for compensation of the loss of dynamic range of a hearing impairment, amplifying the compressed electrical signal with a frequency dependent gain for compensation of frequency dependent hearing impairment, and converting the amplified signal to sound. - View Dependent Claims (21, 22, 23)
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24. A hearing aid comprising:
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a multi-channel compressor for compensation of loss of dynamic range, the multi-channel compressor having a digital input for receiving a digital sound signal and an output for outputting a compressed signal to an amplifier; wherein the amplifier has a selectable gain as a function of frequency for provision of a desired gain for soft sounds for compensation of frequency dependent hearing loss, and an output for outputting a processed digital sound signal. - View Dependent Claims (25)
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26. A hearing aid comprising:
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a multi-channel compressor for compensation of loss of dynamic range, the multi-channel compressor having a digital input for receiving a digital sound signal and an output for outputting a compressed signal to an amplifier; wherein the amplifier has a selectable gain for compensation of frequency dependent hearing loss, the gain being based on a hearing threshold determined as a function of frequency, the amplifier further having an output for outputting a processed digital sound signal. - View Dependent Claims (27)
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28. A hearing aid comprising:
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a multi-channel compressor for compensation of loss of dynamic range and for applying an identical gain to all sounds below a given sound pressure level, the multi-channel compressor having a digital input for receiving a digital sound signal and an output for outputting a compressed signal to an amplifier; wherein the amplifier has a selectable gain as a function of frequency for compensation of frequency dependent hearing loss and an output for outputting a processed digital sound signal. - View Dependent Claims (29)
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Specification