PATENT CLAIM ANALYSIS

Application Number: 16141934
Application Type: Utility
Filing Date: 2018-09
Publication Date: 2019-01
Patent Classification: ["704", "205000"]

Abstract:
Provided are a voice audio encoding device, voice audio decoding device, voice audio encoding method, and voice audio decoding method that efficiently perform bit distribution and improve sound quality. Dominant frequency band identification unit identifies a dominant frequency band having a norm factor value that is the maximum value within the spectrum of an input voice audio signal. Dominant group determination units and non-dominant group determination unit group all sub-bands into a dominant group that contains the dominant frequency band and a non-dominant group that contains no dominant frequency band. Group bit distribution unit distributes bits to each group on the basis of the energy and norm variance of each group. Sub-band bit distribution unit redistributes the bits that have been distributed to each group to each sub-band in accordance with the ratio of the norm to the energy of the groups.

Claim (Index 5):
A speech/audio decoding apparatus comprising:\n a de-quantization section that de-quantizes a quantized spectral envelope; a group determining section that groups the quantized spectral envelopes into a plurality of groups; a first bit allocation section that allocates bits to the plurality of groups; a second bit allocation section that allocates the bits allocated to the plurality of groups to subbands on a group-by-group basis; a decoding section that decodes a frequency spectrum of a speech/audio signal using the bits allocated to the subbands; an envelope shaping section that applies the de-quantized spectral envelope to the decoded frequency spectrum and reproduces a decoded spectrum; and an inverse transformation section that inversely transforms the decoded spectrum from a frequency domain to a time domain.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 97.0
- Lexical Diversity: 2.17391
- Patent Class: 704.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14650093', '15673957', '15358184', '14001977', '15650714']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.2925739681579864
- 35 USC 102 Novelty (BERT): 0.5961220538799639
- Combined Prediction Score: 0.3229287767301841
- Mean Citation Score: 404.073764
- Max Citation Score: 522.5373
- Similarity Product: 456.734047338134

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

Dataset: test