PATENT CLAIM ANALYSIS

Application Number: 16396253
Application Type: Utility
Filing Date: 2019-04
Publication Date: 2019-08
Patent Classification: ["704", "223000"]

Abstract:
The present disclosure relates methods and apparatus for recovering a lost frame in a received audio signal. One example method includes obtaining an initial high-frequency band signal of a current lost frame in the received audio signal, calculating a ratio R, where the ratio R is a ratio of a high frequency excitation energy of a previous frame of the current lost frame to a high frequency excitation energy of the current lost frame, obtaining a global gain of the current lost frame according to the ratio R and a global gain of the previous frame of the current lost frame, and recovering a high-frequency band signal of the current lost frame according to the initial high-frequency band signal of the current lost frame and the global gain of the current lost frame.

Claim (Index 13):
The apparatus according to  claim 9 , wherein obtaining the global gain of the current lost frame according to the ratio R and the global gain of the previous frame of the current lost frame comprises one of:\n if the ratio R is greater than two times and less than or equal to four times of the global gain of the previous frame, obtaining the global gain of the current lost frame according to the following formula:\n G\u2032 =0.4\u00d7 R+ 0.6\u00d7 G;  \n if the ratio R is greater than four times of the global gain of the previous frame, obtaining the global gain of the current lost frame according to the following formula:\n G\u2032= 0.8\u00d7 R+ 0.2\u00d7 G ; or \n if the ratio R is less than or equal to two times of the global gain of the previous frame, obtaining the global gain of the current lost frame according to the following formula:\n G\u2032 =0.2\u00d7 R+ 0.8\u00d7 G;  \n wherein G\u2032 is the global gain of the current lost frame, and wherein G is the global gain of the previous frame.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 100.0
- Lexical Diversity: 3.15909
- Patent Class: 704.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15817296', '15385881', '16043880', '14981956', '14985831']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.2899878564596624
- 35 USC 102 Novelty (BERT): 0.5887126328182599
- Combined Prediction Score: 0.3198603340955221
- Mean Citation Score: 353.64965399999994
- Max Citation Score: 478.25192
- Similarity Product: 459.7782984363746

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

Dataset: test