PATENT CLAIM ANALYSIS

Application Number: 15860311
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-05
Patent Classification: ["704", "500000"]

Abstract:
A coding efficiency of coding spectral coefficients of a spectrum of an audio signal is increased by en/decoding a currently to be en/decoded spectral coefficient by entropy en/decoding and, in doing so, performing the entropy en/decoding depending, in a context-adaptive manner, on a previously en/decoded spectral coefficient, while adjusting a relative spectral distance between the previously en/decoded spectral coefficient and the currently en/decoded spectral coefficient depending on an information concerning a shape of the spectrum. The information concerning the shape of the spectrum may have a measure of a pitch or periodicity of the audio signal, a measure of an inter-harmonic distance of the audio signal's spectrum and/or relative locations of formants and/or valleys of a spectral envelope of the spectrum, and on the basis of this knowledge, the spectral neighborhood which is exploited in order to form the context of the currently to be en/decoded spectral coefficients may be adapted to the thus determined shape of the spectrum, thereby enhancing the entropy coding efficiency.

Claim (Index 14):
Transform-based audio decoder according to  claim 13 , wherein the transfer function's dependency on the linear prediction synthesis filter, 1/A(z), defined by the linear prediction information, is such that the transfer function is a transfer function of 1/A(k\u00b7z), where k is a constant.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 86.0
- Lexical Diversity: 2.52857
- Patent Class: 704.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15130589', '15000844', '14574830', '13004282', '13081241']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.3244423470491214
- 35 USC 102 Novelty (BERT): 0.6652575821678852
- Combined Prediction Score: 0.3585238705609977
- Mean Citation Score: 388.312504
- Max Citation Score: 652.22375
- Similarity Product: 647.9243457718194

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