PATENT CLAIM ANALYSIS

Application Number: 16201647
Application Type: Utility
Filing Date: 2018-11
Publication Date: 2019-03
Patent Classification: ["704", "211000"]

Abstract:
A method and an apparatus for processing a temporal envelope of an audio signal, and an encoder, where when multiple temporal envelopes are solved, continuity of signal energy can be well maintained, and in addition, complexity of calculating a temporal envelope is reduced. The method includes obtaining a high-band signal of the current frame audio signal according to the received current frame audio signal, dividing the high-band signal of the current frame signal into M subframes according to a predetermined temporal envelope quantity M, where M is an integer greater than or equal to two, calculating a temporal envelope of each of the subframes, performing windowing on the first subframe of the M subframes and the last subframe of the M subframes using an asymmetric window function, and performing windowing on a subframe except the first subframe and the last subframe of the M subframes.

Claim (Index 6):
An apparatus for processing an audio signal, comprising:\n a memory comprising instructions; and a processor in communication with the memory, the instructions causing the processor to be configured to:\n obtain a high-band signal of a current frame of the audio signal and a low-band signal of the current frame of the audio signal; \n encode the low-band signal of the current frame to obtain a low-band excitation signal; \n perform linear prediction on the high-band signal of the current frame to obtain a linear prediction coefficient; \n quantize the linear prediction coefficient to obtain a quantized linear prediction coefficient; \n obtain a predicted high-band signal according to the low-band excitation signal and the quantized linear prediction coefficient; \n divide the predicted high-band signal into M subframes, the M being an integer greater than two; \n perform windowing on a first subframe of the M subframes and a last subframe of the M subframes using a first asymmetric window function; and \n perform the windowing on a subframe except the first subframe and the last subframe of the M subframes.

Metadata:
- Claim Count in Document: 35.0
- Percentile: 98.0
- Lexical Diversity: 2.30882
- Patent Class: 704.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15372130', '15708617', '14985831', '13450792', '11397871']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.2608896567800646
- 35 USC 102 Novelty (BERT): 0.5995814292185517
- Combined Prediction Score: 0.2947588340239134
- Mean Citation Score: 325.079652
- Max Citation Score: 522.1565
- Similarity Product: 469.8891734493375

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