PATENT CLAIM ANALYSIS

Application Number: 15891326
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2019-02
Patent Classification: ["381", "022000"]

Abstract:
A method for performing DRC on a HOA signal comprises transforming the HOA signal to the spatial domain, analyzing the transformed HOA signal, and obtaining, from results of said analyzing, gain factors that are usable for dynamic compression. The gain factors can be transmitted together with the HOA signal. When applying the DRC, the HOA signal is transformed to the spatial domain, the gain factors are extracted and multiplied with the transformed HOA signal in the spatial domain, wherein a gain compensated transformed HOA signal is obtained. The gain compensated transformed HOA signal is transformed back into the HOA domain, wherein a gain compensated HOA signal is obtained. The DRC may be applied in the QMF-filter bank domain.

Claim (Index 1):
A method for dynamic range compression (DRC), the method comprising:\n receiving a reconstructed Higher Order Ambisonics (HOA) audio signal representation; transforming the reconstructed HOA audio signal into a spatial domain based on: W DSHT =D DSHT C , wherein D DSHT  is an inverse Discrete Spherical Harmonics Transform (DSHT), C\u03f5  (N+1) 2 \u00d7\u03c4  is a block of \u03c4 HOA samples and W DSHT \u03f5 (N+1) 2 \u00d7\u03c4  is a block of spatial samples matching an input time granularity of a Quadrature Mirror Filter (QMF) bank; applying a DRC gain value g(n, m) corresponding to a time frequency tile (n, m) based on: {hacek over (w)} DRC (n, m)=diag(g(n, m)) \u0175 DSHT (n, m), wherein \u0175 DSHT (n, m) is a vector of spatial channels for the time frequency tile (n, m); and combining the DSHT matrix and rendering to loudspeaker channels based on w(n, m)=D D DSHT \u22121  {hacek over (w)} DRC (n, m), wherein D DSHT \u22121  is an inverse of the DSHT matrix and D is a HOA rendering matrix.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 88.0
- Lexical Diversity: 2.4717
- Patent Class: 381.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15127775', '14415571', '15761351', '15319707', '15319699']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6657868949884602
- 35 USC 102 Novelty (BERT): 0.636248776923413
- Combined Prediction Score: 0.6628330831819554
- Mean Citation Score: 347.533268
- Max Citation Score: 632.6658
- Similarity Product: 533.4000906421064

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

Dataset: test