PATENT CLAIM ANALYSIS

Application Number: 15909513
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2019-09
Patent Classification: ["704", "226000"]

Abstract:
Signals are received from audio pickup channels that contain signals from multiple sound sources. The audio pickup channels may include one or more microphones and one or more accelerometers. Signals representative of multiple sound sources are generated using a blind source separation algorithm. It is then determined which of those signals is deemed to be a voice signal and which is deemed to be a noise signal. The output noise signal may be scaled to match a level of the output voice signal, and a clean speech signal is generated based on the output voice signal and the scaled noise signal. Other aspects are described.

Claim (Index 1):
A system for digital speech enhancement, the system comprising:\n a processor; and memory having stored therein instructions that program a processor to execute a blind source separation (BSS) algorithm upon signals from a plurality of audio pickup channels including a microphone signal and an accelerometer signal, and perform as an accelerometer-based voice activity detector (VADa) that performs voice activity detection using the accelerometer signal and not the microphone signal to produce a VADa output that indicates a speech confidence level or a binary speech no-speech value, wherein the BSS algorithm includes\n a sound source separator that generates a first signal representative of a first sound source and a second signal representative of a second sound source, and \n a voice source detector that determines which of the first and second signals is a voice signal and which is a noise signal, and outputs the signal determined to be the voice signal as an output voice signal and the signal determined to be the noise signal as an output noise signal, wherein the processor is configured to adapt variance parameters, of a separation algorithm for generating the first signal, based on the VADa output, and wherein the first signal is determined to be the voice signal.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 90.0
- Lexical Diversity: 1.96491
- Patent Class: 704.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15610500', '13631716', '13840136', '13840667', '15069808']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.2717207098629368
- 35 USC 102 Novelty (BERT): 0.4902336811586849
- Combined Prediction Score: 0.2935720069925116
- Mean Citation Score: 213.345446
- Max Citation Score: 237.96663
- Similarity Product: 178.2425973968071

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test