PATENT CLAIM ANALYSIS

Application Number: 16195745
Application Type: Utility
Filing Date: 2018-11
Publication Date: 2019-03
Patent Classification: ["704", "500000"]

Abstract:
The present disclosure provides methods, devices and computer program products for encoding and decoding a stereo audio signal based on an input signal. According to the disclosure, a hybrid approach of using both parametric stereo coding and a discrete representation of the stereo audio signal is used which may improve the quality of the encoded and decoded audio for certain bitrates.

Claim (Index 1):
A method for decoding an encoded audio bitstream in an audio processing system, the method comprising:\n extracting from the encoded audio bitstream a first waveform-coded signal comprising spectral coefficients corresponding to frequencies only up to a first cross-over frequency for a first time period; extracting from the encoded audio bitstream a second waveform-coded signal comprising spectral coefficients corresponding to only a subset of frequencies above the first cross-over frequency for the first time period; performing high frequency reconstruction at a second cross-over frequency for the first time period to generate a reconstructed signal, wherein the second cross-over frequency is above the first cross-over frequency and the high frequency reconstruction uses reconstruction parameters derived from the encoded audio bitstream to generate the reconstructed signal;\n combining the first waveform-coded signal, the second waveform-coded signal, and the reconstructed signal; and \n outputting the combined signal, \n wherein the second cross-over frequency depends on characteristics of the encoded audio bitstream.

Metadata:
- Claim Count in Document: 4.0
- Percentile: 98.0
- Lexical Diversity: 1.44444
- Patent Class: 704.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15410377', '15227283', '15641033', '14781712', '14772001']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.315802633101883
- 35 USC 102 Novelty (BERT): 0.4844666665152407
- Combined Prediction Score: 0.3326690364432187
- Mean Citation Score: 263.506318
- Max Citation Score: 288.11728
- Similarity Product: 283.1626436306476

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test