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 19):
An audio signal encoding method comprising:\n down-sampling an input signal to a lower sampling rate; encoding the down-sampled signal into core encoding parameters and outputting the parameters as well as decoding the core encoding parameters and transforming the decoded signal into a frequency domain to obtain a synthesized low frequency spectrum; transforming the input signal to a spectrum and splitting a frequency spectrum higher than the synthesized low frequency spectrum into a plurality of subbands; identifying the most correlated portion from the low frequency spectrum for each of the subbands and outputting the identification result as index information; estimating an energy scale factor between each of the subbands and the most correlated portion identified from the synthesized low frequency spectrum and outputting the scale factor as scale factor information; and estimating and outputting a harmonic frequency of the synthesized low frequency spectrum and a harmonic frequency of the transformed input signal.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 98.0
- Lexical Diversity: 2.4127
- Patent Class: 704.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15286030', '14894062', '15659023', '14387367', '15002361']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.3512303343879846
- 35 USC 102 Novelty (BERT): 0.6036479352497872
- Combined Prediction Score: 0.3764720944741648
- Mean Citation Score: 424.6523
- Max Citation Score: 548.8055400000002
- Similarity Product: 511.1748175521293

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