Signal processing apparatus, signal processing method, signal processing model production method, and sound output device
AssigneeSony Group Corporation
InventorsYasunobu Murata, Kohei Asada
Life of this patent
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Abstract
Provided is a signal processing apparatus including an acquisition unit that acquires an acoustic characteristic in a user's ear, isolated from the outside world and an NC filter unit that generates sound data having a phase opposite to an ambient sound leaking into the user's ear. The signal processing apparatus further includes a correction unit that corrects the sound data by using a correction filter and a determination unit that determines a filter coefficient of the correction filter based on the acoustic characteristic.
Claims14
A signal processing apparatus, including:
- an acquisition unit configured to acquire a first acoustic characteristic in a user's ear, isolated from an outside world;
- an NC filter unit configured to generate sound data having a phase opposite to an ambient sound that leaks into the user's ear;
- a correction unit configured to correct the sound data based on a correction filter;
- and
- a determination unit configured to determine a filter coefficient of the correction filter, based on a trained model in which the first acoustic characteristic, a second acoustic characteristic measured in advance, and the sound data are input, and a noise suppression ratio is output.
A signal processing method, including:
- acquiring a first acoustic characteristic in a user's ear, isolated from an outside world;
- generating sound data having a phase opposite to an ambient sound leaking into the user's ear;
- correcting the sound data based on a correction filter;
- and
- determining a filter coefficient of the correction filter, based on a trained model in which
- the first acoustic characteristic, a second acoustic characteristic measured in advance, and the sound data are input, and
- a noise suppression ratio is output.
A non-transitory computer-readable medium having stored thereon computer-executable instructions that, when executed by a computer, cause the computer to execute operations, the operations comprising:
- acquiring a first acoustic characteristic in a user's ear, isolated from an outside world;
- generating sound data having a phase opposite to an ambient sound leaking into the user's ear;
- correcting the sound data based on a correction filter;
- and
- determining a filter coefficient of the correction filter, based on a trained model in which
- the first acoustic characteristic, a second acoustic characteristic measured in advance, and the sound data are input, and
- a noise suppression ratio is output.
Dependencies are inferred from the claim text.