PATENT CLAIM ANALYSIS

Application Number: 16407307
Application Type: Utility
Filing Date: 2019-05
Publication Date: 2019-08
Patent Classification: ["704", "203000"]

Abstract:
In accordance with an example embodiment of the present invention, disclosed is a method and an apparatus thereof for controlling a concealment method for a lost audio frame of a received audio signal. A method for a decoder of concealing a lost audio frame comprises detecting in a property of the previously received and reconstructed audio signal, or in a statistical property of observed frame losses, a condition for which the substitution of a lost frame provides relatively reduced quality. In case such a condition is detected, the concealment method is modified by selectively adjusting a phase or a spectrum magnitude of a substitution frame spectrum.

Claim (Index 30):
A computer program product comprising a non-transitory computer readable medium storing computer program code which when executed by at least one processor causes the at least one processor to:\n obtaining a frequency domain representation of a prototype frame which is based on a segment of a previously received or reconstructed audio signal; analyzing at least one of a previously reconstructed signal frame and a frame loss statistic to detect at least one predetermined condition that could lead to suboptimal signal reconstruction quality if a first concealment method is applied; responsive to when the at least one predetermined condition is not detected, applying the first concealment method, wherein the first concealment method comprises:\n applying a sinusoidal model to the prototype frame to identify a frequency of a sinusoidal component of the audio signal, calculating a phase shift \u03b8 k  for the sinusoidal component and phase shifting the sinusoidal component by \u03b8 k  to generate a modified prototype frame; \n responsive to when the at least one predetermined condition is detected, applying a second concealment method, wherein the second concealment method comprises:\n adapting the first concealment method by selectively adjusting a magnitude of spectrum of the prototype frame when generating the modified prototype frame; and \n creating a substitution frame for a lost audio frame based on a frequency spectrum of the modified prototype frame.

Metadata:
- Claim Count in Document: 80.0
- Percentile: 100.0
- Lexical Diversity: 1.98246
- Patent Class: 704.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14422249', '15630994', '15014563', '15809493', '14764287']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.2907231762281536
- 35 USC 102 Novelty (BERT): 0.5516678609744745
- Combined Prediction Score: 0.3168176447027857
- Mean Citation Score: 381.2753220000001
- Max Citation Score: 404.202
- Similarity Product: 393.1512639323473

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