PATENT CLAIM ANALYSIS

Application Number: 16003396
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-12
Patent Classification: ["381", "313000"]

Abstract:
A microphone system comprises a multitude of microphones; a signal processor connected to said number of microphones, and being configured to estimate a direction-to and/or a position of the target sound source relative to the microphone system based on a maximum likelihood methodology; and a database Θ comprising a dictionary of relative transfer functions representing direction-dependent acoustic transfer functions from said target signal source to each of said microphones relative to a reference microphone among said microphones, wherein individual dictionary elements of said database Θ of relative transfer functions comprises relative transfer functions for a number of different directions and/or positions relative to the microphone system; and wherein the signal processor is configured to determine one or more of the most likely directions to or locations of said target sound source. The invention may e.g. be used for the hearing aids or other portable audio communication devices.

Claim (Index 25):
A method according to  claim 24  comprising adaptive smoothing of a covariance matrix (C x , C v ) for said electric input signals comprising adaptively changing time constants (\u03c4 att , \u03c4 rel ) for said smoothing in dependence of changes (\u0394C) over time in covariance of said first and second electric input signals;\n wherein said time constants have first values (\u03c4 att1 , \u03c4 rel1 ) for changes in covariance below a first threshold value (\u0394C th1 ) and second values (\u03c4 att2 , \u03c4 re12 ) for changes in covariance above a second threshold value (\u0394C th2 ), wherein the first values are larger than corresponding second values of said time constants, while said first threshold value (\u0394C th1 ) is smaller than or equal to said second threshold value (\u0394C th2 ).

Metadata:
- Claim Count in Document: 32.0
- Percentile: 94.0
- Lexical Diversity: 2.06667
- Patent Class: 381.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15915734', '15608294', '15290643', '15042944', '15669020']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7200416800938013
- 35 USC 102 Novelty (BERT): 0.507315557828259
- Combined Prediction Score: 0.6987690678672471
- Mean Citation Score: 279.779102
- Max Citation Score: 303.93536
- Similarity Product: 253.99121854774475

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