PATENT CLAIM ANALYSIS

Application Number: 16161216
Application Type: Utility
Filing Date: 2018-10
Publication Date: 2019-03
Patent Classification: ["381", "071200"]

Abstract:
Provided are, among other things, systems, methods and techniques for reducing echo in an audio signal. One representative embodiment involves obtaining an input signal, an estimate of a system-characterizing function, and a reference signal, each at a corresponding sample rate and each divided into a plurality of sub-bands; separately processing such sub-bands, where for a given sub-band the estimate of the system-characterizing function and the reference signal are processed to generate an echo-estimation signal and then the echo-estimation signal is subtracted from the input signal to provide an echo-corrected signal for such given sub-band; and combining the echo-corrected signal from each of different ones of the plurality of the sub-bands to provide a final output signal, with the echo-estimation signal generated using a processing sample rate that is lower than the sample rate for the input signal.

Claim (Index 5):
A method according to  claim 1 , wherein said echo-estimation signal is generated for different ones of the sub-bands using different processing sample rates.

Metadata:
- Claim Count in Document: 25.0
- Percentile: 97.0
- Lexical Diversity: 2.19118
- Patent Class: 381.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['15704235', '15725217', '13591667', '13787254', '13411865']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7257064687310499
- 35 USC 102 Novelty (BERT): 0.5425849489887925
- Combined Prediction Score: 0.7073943167568242
- Mean Citation Score: 265.954064
- Max Citation Score: 391.47263
- Similarity Product: 313.9733873141575

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