PATENT CLAIM ANALYSIS

Application Number: 16129280
Application Type: Utility
Filing Date: 2018-09
Publication Date: 2019-01
Patent Classification: ["704", "500000"]

Abstract:
The present document relates to audio source coding systems. In particular, the present document relates to audio source coding systems which make use of linear prediction in combination with a filterbank. A method for estimating a first sample ( 615 ) of a first subband signal in a first subband of an audio signal is described. The first subband signal of the audio signal is determined using an analysis filterbank ( 612 ) comprising a plurality of analysis filters which provide a plurality of subband signals in a plurality of subbands from the audio signal, respectively. The method comprises determining a model parameter ( 613 ) of a signal model; determining a prediction coefficient to be applied to a previous sample ( 614 ) of a first decoded subband signals derived from the first subband signal, based on the signal model, based on the model parameter ( 613 ) and based on the analysis filterbank ( 612 ); wherein a time slot of the previous sample ( 614 ) is prior to a time slot of the first sample ( 615 ); and determining an estimate of the first sample ( 615 ) by applying the prediction coefficient to the previous sample ( 614 ).

Claim (Index 27):
An audio signal processing device configured to determine an estimate of a sample of a subband signal from two or more previous samples of the subband signal, wherein the subband signal corresponds to one of a plurality of subbands of a subband-domain representation of an audio signal; wherein the audio signal processing device comprises\n a predictor calculator configured to\n determine signal model data comprising a model parameter; \n determine a first prediction coefficient to be applied to a first previous sample of the subband signal; wherein the first prediction coefficient is determined in response to the model parameter using a first analytical function; and \n determine a second prediction coefficient to be applied to a second previous sample of the subband signal; wherein a time slot of the second previous sample immediately precedes a time slot of the first previous sample; wherein the second prediction coefficient is determined in response to the model parameter using a second analytical function; and \n a subband predictor configured to determine the estimate of the first sample by applying the first prediction coefficient to the first previous sample and by applying the second prediction coefficient to the second previous sample; wherein the first analytical function and the second analytical function are different, and one or more of the predictor calculator and the subband predictor are implemented, at least in part, by one or more processors of the audio signal processing device.

Metadata:
- Claim Count in Document: 44.0
- Percentile: 97.0
- Lexical Diversity: 2.93243
- Patent Class: 704.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14655037', '15843853', '15486943', '13144346', '14306529']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.2821109379710745
- 35 USC 102 Novelty (BERT): 0.5859835714780999
- Combined Prediction Score: 0.312498201321777
- Mean Citation Score: 380.436902
- Max Citation Score: 479.25583
- Similarity Product: 457.7602387154651

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