PATENT CLAIM ANALYSIS

Application Number: 15862045
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["381", "303000"]

Abstract:
Audio processing architectures are described for implementing a multi-band audio compression algorithm with advanced surround processing. Exemplary architectures can improve the fidelity and perceived sound field spread of inexpensive, cabinet mounted, stereo speakers such as those that might be found in televisions, wireless speaker systems and sound bars. Embodiments of the present disclosure can improve inexpensive, cabinet mounted, stereo speakers by providing, e.g., (i) an Advanced Surround algorithm that adds depth and height to the left/right/center sound field images, (ii) a Soft Clip algorithm to minimize the perceived artifacts caused by compressor overshoot, (iii) configurable crossover filter order adjustment to allow better isolation between bands, (iv) a compressor maximum gain adjustment to reduce overshoot and minimize noise boost, and/or (v) a center gain adjustment to emphasize the perception of the center image (dialog) in high ambient noise situations.

Claim (Index 1):
A system for enhancing stereo audio, the system comprising:\n a processor configured to limit the audio difference to sum ratio;\n at least one crossover network configured so as to separate each of left and right audio input signals into at least two frequency bands, and configurable to set the frequency and filter order of the crossover network; \n at least two compressors configured to produce left and right output signals responsive to the input signals in each of the bands created by the crossover network(s), and with configurable target level, above threshold compression ratio, below threshold compression ratio, and maximum gain; \n a two channel surround processor configurable to set the amount of perceived sound field spread in multiple dimensions \n left and right equalizers configured to receive the left and right audio input signals and shape the spectral characteristics as desired; and \n a soft clipper to limit the perceived distortion of left and right signals that briefly exceed a full scale output.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 86.0
- Lexical Diversity: 1.65657
- Patent Class: 381.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14212906', '12619655', '13652860', '12814425', '09411143']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6996695287551432
- 35 USC 102 Novelty (BERT): 0.4658412847298754
- Combined Prediction Score: 0.6762867043526164
- Mean Citation Score: 171.553414
- Max Citation Score: 198.27182
- Similarity Product: 169.0674671795177

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

Dataset: test