PATENT CLAIM ANALYSIS

Application Number: 15753139
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-08
Patent Classification: ["381", "094100"]

Abstract:
The present invention relates in one aspect to a microphone array signal processing system comprising a digital buffer coupled to a signal input and configured to store first and second digital audio signals. A beamformer analyser is configured to, in response to a first voice trigger, determine noise statistics based on the first signal segment of the first digital audio signal and a first signal segment of the second digital audio signal. A coefficients calculator is configured to calculate a first set of fixed beamformer coefficients of a beamforming algorithm. The beamforming algorithm is configured for applying the first set of fixed beamformer coefficients to the first signal segments of the first and second digital audio signals retrieved from the digital buffer to produce a noise reduced digital audio signal.

Claim (Index 2):
A microphone array signal processing system in accordance with  claim 1 , configured to:\n flush the first and second digital audio signals in the digital buffer, store a third and a fourth digital audio signal in the digital buffer, await a second voice trigger input indicating a second signal segment holding a second voice feature of the third digital audio signal in the digital buffer, determine noise statistics, in response to the second voice trigger, by the beamformer analyser to determine noise statistics, based on the second signal segment of the third digital audio signal and a second signal segment of the fourth digital audio signal, aligned in time to the second signal segment of the third digital audio signal, flush the first set of fixed beamformer coefficients, calculate a second set of fixed beamformer coefficients by the coefficients calculator based on the second signal segment of the third digital audio signal, the second signal segment of the fourth digital audio signal and the determined noise statistics, and apply, by the beamforming algorithm, the second set of fixed beamformer coefficients to the second segment of the third digital audio signal and the second segment of the fourth digital audio signal retrieved from the digital buffer to produce a second noise reduced digital audio signal.

Metadata:
- Claim Count in Document: 30.0
- Percentile: 88.0
- Lexical Diversity: 2.38596
- Patent Class: 381.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['11568240', '13967055', '14566959', '14274544', '15355865']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6866761330607353
- 35 USC 102 Novelty (BERT): 0.4900584496978081
- Combined Prediction Score: 0.6670143647244425
- Mean Citation Score: 209.615182
- Max Citation Score: 215.50554
- Similarity Product: 169.20517482208368

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