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US 10,477,326 B2Granted
Signal processing device and signal processing method
AssigneeSocionext Inc.
InventorsShuji Miyasaka, Kazutaka Abe
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Abstract
A signal processing device, comprising a high band attenuation filter which attenuates a signal component in a bandwidth of frequency higher than at least a predetermined frequency in an audio signal that is input, and a hearing aid processor which performs hearing aid processing on a signal output from the high band attenuation filter, wherein the predetermined frequency is determined according to the upper limit of a target bandwidth of frequency for hearing aid.
Claims7
A signal processing device, comprising:
- a high band attenuation filter which attenuates at least a signal component of an audio signal, which has not been frequency shifted, in a bandwidth of frequency higher than a predetermined frequency, the audio signal being input into the high band attenuation filter, and
- a hearing aid processor which performs hearing aid processing on a signal output from the high band attenuation filter,
- wherein the predetermined frequency is determined according to an upper limit of a target bandwidth of frequency for hearing aid, and
- the hearing aid processor amplifies the signal output from the high band attenuation filter when the amplitude of the signal is less than a first amplitude, and does not amplify the signal when the amplitude of the signal is greater than the first amplitude.
1 more element
A signal processing method, comprising:
- attenuating at least a signal component in a bandwidth of frequency higher than a predetermined frequency in an audio signal, which has not been frequency shifted, that is input;
- and
- performing hearing aid processing on a signal processed in the attenuating,
- wherein the predetermined frequency is determined according to an upper limit of a target bandwidth of frequency for hearing aid, and
- the hearing aid processing amplifies the signal processed in the attenuating when the amplitude of the signal is less than a first amplitude, and does not amplify the signal when the amplitude of the signal is greater than the first amplitude.
2 more elements
Dependencies are inferred from the claim text.