PATENT CLAIM ANALYSIS

Application Number: 16295039
Application Type: Utility
Filing Date: 2019-03
Publication Date: 2019-07
Patent Classification: ["704", "205000"]

Abstract:
A coding technology that efficiently codes an input sound signal irrespective of the characteristics thereof and can obtain a decoded sound signal that sounds less artificial to a listener. A coding method codes an input sound signal frame by frame of a predetermined time segment by a selected coding processing from a plurality of types of coding processing in the frequency domain, the coding method makes it possible for a selection unit to select coding processing which is different from the coding processing of the preceding frame as coding processing of the present frame if at least one of the magnitude of the energy of high frequency components of the input sound signal of the preceding frame and the magnitude of the energy of high frequency components of the input sound signal of the present frame is smaller than or equal to a predetermined threshold value.

Claim (Index 1):
A coding method that codes an input sound signal frame by frame of a predetermined time segment by a selected coding processing from a plurality of types of coding processing in a frequency domain, the coding method comprising:\n a first coding step of coding a coefficient sequence in the frequency domain corresponding to the input sound signal by using a spectral envelope based on coefficients which are convertible into linear prediction coefficients corresponding to the input sound signal; a second coding step of coding the coefficient sequence in the frequency domain corresponding to the input sound signal, involving variable-length coding which is performed on a differential between a logarithmic value of average energy of coefficients in each frequency domain obtained by division and a logarithmic value of average energy of an adjacent frequency domain; and a selection step of making possible a selection to code a present frame in the first coding step if ascents and descents of a spectrum of the input sound signal of the present frame are steep or a degree of concentration of the spectrum is high and making possible a selection to code the present frame in the second coding step if the ascents and descents of the spectrum of the input sound signal of the present frame are gentle or the degree of concentration of the spectrum is low.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 99.0
- Lexical Diversity: 2.19118
- Patent Class: 704.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15327490', '15307059', '15306622', '16044678', '15562689']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.2375909366106995
- 35 USC 102 Novelty (BERT): 0.558586871608437
- Combined Prediction Score: 0.2696905301104733
- Mean Citation Score: 266.320624
- Max Citation Score: 428.31497
- Similarity Product: 349.1067222933048

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

Dataset: test