PATENT CLAIM ANALYSIS

Application Number: 16391893
Application Type: Utility
Filing Date: 2019-04
Publication Date: 2019-09
Patent Classification: ["704", "233000"]

Abstract:
A method for detecting an audio signal and an apparatus, where the method includes determining an input audio signal as a to-be-determined audio signal, determining an enhanced segmental signal-to-noise ratio (SSNR) of the audio signal, where the enhanced SSNR is greater than a reference SSNR, and comparing the enhanced SSNR with a voice activity detection (VAD) decision threshold to determine whether the audio signal is an active signal. Therefore, the method and the apparatus can accurately distinguish an active voice and an inactive voice.

Claim (Index 8):
The apparatus according to  claim 7 , wherein the one or more processors further execute the instructions to determine the enhanced SSNR according to a signal-to-noise (SNR) of each sub-band and weight of the SNR of each sub-band in the audio signal, wherein first weights of SNRs of high-frequency portion sub-bands are greater than a second weight of an SNR of a second sub-band, wherein the SNRs of the high-frequency portion sub-bands that are greater than a first threshold and the second sub-band is one of a plurality of sub-bands except the high-frequency portion sub-bands in the audio signal.

Metadata:
- Claim Count in Document: 14.0
- Percentile: 100.0
- Lexical Diversity: 1.97917
- Patent Class: 704.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15262263', '15700165', '13891198', '15157424', '15577343']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.3122395315703641
- 35 USC 102 Novelty (BERT): 0.5673087357746481
- Combined Prediction Score: 0.3377464519907925
- Mean Citation Score: 315.610874
- Max Citation Score: 468.94397
- Similarity Product: 404.03610649376986

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