PATENT CLAIM ANALYSIS

Application Number: 16047990
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2020-01
Patent Classification: ["381", "316000"]

Abstract:
Disclosed are technologies for processing a surround sound audio signal. The center channel is processed to generate a processed center channel. For each pair of corresponding left and right audio channels, mid and side channel signals are generated by taking the sum and difference of the pair, respectively. The side channel is outputted to a first signal pathway that features a dynamic range compressor. The mid channel is outputted to a second signal pathway and spectrally decomposed into a plurality of sub-band signals. Each sub-band signal is compressed by a dynamic range compressor and transmitted to a gain stage. The compressed sub-band signals are outputted from the gain stage and recombined. The outputs of the first and second signal pathways are then recombined and decoded to produce processed left and right audio signals. Each pair or processed left and right audio signals are output along with the processed center channel.

Claim (Index 1):
A method of processing an audio signal for replay on an audio device, the method comprising:\n processing a center channel of a surround sound audio signal to thereby generate a processed center channel; processing one or more surround sound channel pairs, each pair comprising a left channel and a right channel of the surround sound audio signal, to thereby generate a corresponding one or more processed surround sound channel pairs, the processing for each surround sound channel pair comprising:\n encoding a mid channel by calculating the sum of the left and right channel of the surround sound channel pair; \n encoding a side channel by calculating the difference of the left and right channel of the surround sound channel pair; \n transmitting the side channel to a first signal pathway, wherein the first signal pathway includes a first dynamic range compressor and outputs a processed side channel as a first signal pathway output; \n transmitting the mid channel to a second signal pathway and performing a spectral decomposition of the mid channel into a plurality of sub-band signals, the spectral decomposition using at least one bandpass filter; \n processing the plurality of sub-band signals by:\n providing each sub-band signal to a dynamic range compressor (DRC) and compressing the sub-band signal; \n providing each compressed sub-band signal to a gain stage to thereby form a plurality of gain-adjusted sub-band signals; \n combining the plurality of gain-adjusted sub-band signals into a processed mid channel; and \n outputting the processed mid channel as a second signal pathway output; \n \n recombining the first and second signal pathway outputs; and \n decoding the recombination into a processed surround sound channel pair, the processed surround sound channel pair comprising a processed left channel and a processed right channel of the surround sound audio signal; and \n outputting the processed center channel and the one or more processed surround sound channel pairs.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 95.0
- Lexical Diversity: 2.36765
- Patent Class: 381.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['16047986', '11693835', '13332699', '11333459', '10074604']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.660026489675505
- 35 USC 102 Novelty (BERT): 0.5744062473343301
- Combined Prediction Score: 0.6514644654413876
- Mean Citation Score: 283.857236
- Max Citation Score: 466.27325
- Similarity Product: 383.3881812452972

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