PATENT CLAIM ANALYSIS

Application Number: 15889279
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-06
Patent Classification: ["381", "092000"]

Abstract:
A sound source separation device includes a first microphone that picks up a first voice, a second microphone that picks up a second voice, a first crosstalk canceller that removes, from a voice signal of the first microphone, first crosstalk caused when the second voice is picked up by the first microphone, and a second crosstalk canceller that removes, from a voice signal of the second microphone, second crosstalk caused when the first voice is picked up by the second microphone. The first crosstalk canceller uses a voice signal in which the second crosstalk is removed from the voice signal of the second microphone to estimate and calculate a first interference signal indicative of a degree of the first crosstalk, and to remove the calculated first interference signal from the voice signal of the first microphone. The second crosstalk canceller uses a voice signal in which the first crosstalk is removed from the voice signal of the first microphone to estimate and calculate a second interference signal indicative of a degree of the second crosstalk, and to remove the calculated second interference signal from the voice signal of the second microphone.

Claim (Index 2):
The sound source separation device according to  claim 1 , wherein the first crosstalk canceller includes:\n a first transfer function storage circuit that stores the transfer function estimated as a transfer function with respect to the first crosstalk; a first storage circuit that stores the output signal of the second crosstalk canceller; a first convolution operation unit that performs a convolution on the output signal stored in the first storage circuit and the transfer function stored in the first transfer function storage circuit to generate the first interference signal; a first subtractor that removes, from the output signal of the first microphone, the first interference signal output from the first convolution operation unit to output an obtained signal as the output signal of the first crosstalk canceller; and a first transfer function update circuit that updates the transfer function stored in the first transfer function storage circuit based on the output signal of the first subtractor and the output signal stored in the first storage circuit, and the second crosstalk canceller includes:\n a second transfer function storage circuit that stores the transfer function estimated as a transfer function with respect to the second crosstalk; \n a second storage circuit that stores the output signal of the first crosstalk canceller; \n a second convolution operation unit that performs a convolution on the output signal stored in the second storage circuit and the transfer function stored in the second transfer function storage circuit to generate the second interference signal; \n a second subtractor that removes, from the output signal of the second microphone, the second interference signal output from the second convolution operation unit to output an obtained signal as the output signal of the second crosstalk canceller; \n a second transfer function update circuit that updates the transfer function stored in the second transfer function storage circuit based on the output signal of the second subtractor and the output signal stored in the second storage circuit; \n the first transfer function update circuit uses an independent component analysis to update the transfer function stored in the first transfer function storage circuit based on the output signal of the first subtractor and the output signal stored in the first storage circuit so that the output signal of the first subtractor and the output signal stored in the first storage circuit are independent from each other, and \n the second transfer function update circuit uses an independent component analysis to update the transfer function stored in the second transfer function storage circuit based on the output signal of the second subtractor and the output signal stored in the second storage circuit so that the output signal of the second subtractor and the output signal stored in the second storage circuit are independent from each other.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 88.0
- Lexical Diversity: 4.83333
- Patent Class: 381.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15737465', '12738457', '15447944', '11714291', '15774653']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.674441469317231
- 35 USC 102 Novelty (BERT): 0.5261176974323479
- Combined Prediction Score: 0.6596090921287427
- Mean Citation Score: 221.227288
- Max Citation Score: 321.92783
- Similarity Product: 255.6834113621217

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test