Patent ID: 11967304
Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 5:
6. The sound pick-up device according to claim 1, further comprising:
a first band division unit that divides the input signal into a plurality of frequency bands;
a second band division unit that divides the reference signal into the plurality of frequency bands; and
a band synthesis unit that synthesizes the noise elimination signal generated for each of the plurality of frequency bands,
wherein the adaptive filter includes a plurality of adaptive filters that each generate the estimated noise signal for the corresponding one of the plurality of frequency bands,
the signal generator includes a plurality of signal generators that each generate the noise elimination signal for the corresponding one of the plurality of frequency bands,
the identification unit includes a plurality of identification units that each identify the at least one signal sample position for the corresponding one of the plurality of frequency bands, and
the coefficient update unit includes a plurality of coefficient update units that each update the filter coefficient at the at least one signal sample position for the corresponding one of the plurality of frequency bands.