PATENT CLAIM ANALYSIS

Application Number: 16212958
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-04
Patent Classification: ["700", "094000"]

Abstract:
The present invention relates to audio coding systems which make use of a harmonic transposition method for high frequency reconstruction (HFR). A system and a method for generating a high frequency component of a signal from a low frequency component of the signal is described. The system comprises an analysis filter bank providing a plurality of analysis subband signals of the low frequency component of the signal. It also comprises a non-linear processing unit to generate a synthesis subband signal with a synthesis frequency by modifying the phase of a first and a second of the plurality of analysis subband signals and by combining the phase-modified analysis subband signals. Finally, it comprises a synthesis filter bank for generating the high frequency component of the signal from the synthesis subband signal.

Claim (Index 1):
A system for decoding an audio signal, the system comprising:\n a core decoder for decoding a low frequency component of the audio signal; an analysis filter bank for providing a plurality of analysis subband signals of the low frequency component of the audio signal; a subband selection reception unit for receiving information associated with a fundamental frequency \u03a9 of the audio signal, and for selecting, in response to the information, a first analysis subband signal and a second analysis subband signal from the plurality of analysis subband signals; a non-linear processing unit to generate a synthesis subband signal from the first analysis subband signal and the second analysis subband signal by calculating a magnitude and a phase of the first analysis subband signal, calculating a magnitude and a phase of the second analysis subband signal, calculating a mean value of the magnitudes of the first and the second analysis subband signals, modifying the phase of the first analysis subband signal, modifying the phase of the second analysis subband signal, and combining the modified phase of the first analysis subband signal and the modified phase of the second analysis subband signal; and a synthesis filter bank for generating a high frequency component of the audio signal from the synthesis subband signal.

Metadata:
- Claim Count in Document: 26.0
- Percentile: 98.0
- Lexical Diversity: 2.22581
- Patent Class: 700.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15710021', '14306529', '13144346', '13321910', '14882559']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4706482180274261
- 35 USC 102 Novelty (BERT): 0.5999532179566578
- Combined Prediction Score: 0.4835787180203493
- Mean Citation Score: 464.353602
- Max Citation Score: 518.2499
- Similarity Product: 507.95651513940095

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