PATENT CLAIM ANALYSIS

Application Number: 16219656
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-04
Patent Classification: ["704", "501000"]

Abstract:
An audio signal decoding apparatus is provided that includes a receiver that receives an encoded information, a memory, and a processor that demultiplexes the encoded information, including encoding parameters that are used for decoding a low frequency spectrum and index information that identifies a most, correlated portion from a low frequency spectrum for one or more high frequency subbands. The processor also replicates a high frequency subband spectrum based on the index information using a synthesized low frequency spectrum, the synthesized low frequency spectrum being obtained by decoding the encoding parameters. The processor further estimates a frequency of a harmonic component in the synthesized low frequency spectrum, adjusts a frequency of a harmonic component in the high frequency subband spectrum using the estimated harmonic frequency, and generates an output signal using the synthesized low frequency spectrum and the high frequency subband spectrum.

Claim (Index 5):
The audio signal decoding apparatus according to  claim 1 ,\n wherein the harmonic frequency adjustment section comprises: a low frequency spectral peak identification section that identifies a maximum frequency of a spectral peak in the synthesized low frequency spectrum; a high frequency spectral peak identification section that identifies a plurality of spectral peak frequencies in the replicated high frequency subband spectrum; a spectral peak frequency calculation section that calculates, as possible spectral peak frequencies, frequencies obtained by adding a frequency integer times the estimated harmonic frequency to the maximum frequency of the spectral peak in the synthesized low frequency sptecirum; and an adjustment section that adjusts the plurality of spectral peak frequencies in the replicated high frequency subband spectrum to the closest frequency of the calculated possible spectral peak frequencies.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 98.0
- Lexical Diversity: 2.4127
- Patent Class: 704.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15286030', '14894062', '15659023', '14387367', '15002361']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.3811161222847393
- 35 USC 102 Novelty (BERT): 0.5998365801810819
- Combined Prediction Score: 0.4029881680743735
- Mean Citation Score: 424.6523
- Max Citation Score: 548.8055400000002
- Similarity Product: 486.1207622453359

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