PATENT CLAIM ANALYSIS

Application Number: 16039110
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2018-11
Patent Classification: ["704", "219000"]

Abstract:
Provided are a method and an apparatus for determining an encoding mode for improving the quality of a reconstructed audio signal. A method of determining an encoding mode includes determining one from among a plurality of encoding modes including a first encoding mode and a second encoding mode as an initial encoding mode in correspondence to characteristics of an audio signal, and if there is an error in the determination of the initial encoding mode, generating a modified encoding mode by modifying the initial encoding mode to a third encoding mode.

Claim (Index 1):
A method of encoding an audio signal, the method comprising:\n receiving the audio signal; obtaining, performed by at least one processor, signal characteristics of a current frame of the audio signal; selecting, performed by the at least one processor, a class of the current frame in the audio signal from among a plurality of classes including a music class and a speech class, based on the signal characteristics of the current frame; obtaining feature parameters including at least two tonalities and a linear prediction error, the feature parameters being obtained based on a plurality of frames including the current frame; generating a plurality of conditions from one or a combination of the obtained feature parameters; determining, performed by the at least one processor, whether an error occurs in the selected class of the current frame based on whether at least one of the plurality of conditions is met; when the error occurs in the selected class of the current frame, correcting, performed by the at least one processor, the selected class of the current frame; encoding, performed by at least one processor, the current frame, based on either the corrected class or the selected class of the current frame; and generating a bitstream based on the encoded current frame, wherein the at least two tonalities are obtained from at least two frequency regions, and wherein the correcting comprises: when the error occurs in the selected class of the current frame and the selected class of the current frame is the speech class, correcting the selected class of the current frame from the speech class to the music class; and when the error occurs in the selected class of the current frame and the selected class of the current frame is the music class, correcting the selected class of the current frame from the music class to the speech class.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 95.0
- Lexical Diversity: 2.06522
- Patent Class: 704.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15121257', '11939074', '13848177', '15061590', '15488059']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.2281805724505403
- 35 USC 102 Novelty (BERT): 0.4896795412044665
- Combined Prediction Score: 0.2543304693259329
- Mean Citation Score: 196.30993
- Max Citation Score: 248.60081
- Similarity Product: 215.247136884672

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