PATENT CLAIM ANALYSIS

Application Number: 15915405
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-07
Patent Classification: ["704", "500000"]

Abstract:
Embodiments are directed to a companding method and system for reducing coding noise in an audio codec. A compression process reduces an original dynamic range of an initial audio signal through a compression process that divides the initial audio signal into a plurality of segments using a defined window shape, calculates a wideband gain in the frequency domain using a non-energy based average of frequency domain samples of the initial audio signal, and applies individual gain values to amplify segments of relatively low intensity and attenuate segments of relatively high intensity. The compressed audio signal is then expanded back to the substantially the original dynamic range that applies inverse gain values to amplify segments of relatively high intensity and attenuating segments of relatively low intensity. A QMF filterbank is used to analyze the initial audio signal to obtain a frequency domain representation.

Claim (Index 1):
A method of processing an audio signal comprising:\n receiving an audio signal that includes a plurality of time-segments, determining a respective gain for each audio signal time-segment, wherein the gain is in the frequency domain and is based on a p-norm of spectral magnitudes of each time-segment of a frequency domain representation of the audio signal, wherein the p-norm value is selected to emphasize weak spectral content of the audio signal versus strong spectral content of the audio signal; and applying the respective gain values to each time-segment to obtain an expanded audio signal, wherein the application of the individual gain values amplifies segments of relatively high intensity and attenuates segments of relatively low intensity, and wherein each respective gain for each time segment is calculated using subband samples in a subset of subbands in the respective time segment.

Metadata:
- Claim Count in Document: 44.0
- Percentile: 90.0
- Lexical Diversity: 2.0274
- Patent Class: 704.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15914917', '14762690', '14799800', '15452890', '13582967']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.2622723025819519
- 35 USC 102 Novelty (BERT): 0.5886207041771594
- Combined Prediction Score: 0.2949071427414726
- Mean Citation Score: 338.9208480000001
- Max Citation Score: 484.51233
- Similarity Product: 460.8359609497441

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

Dataset: test