PATENT CLAIM ANALYSIS

Application Number: 16208284
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-05
Patent Classification: ["381", "022000"]

Abstract:
When decompressing an HOA data frame representation, a gain control ( 15, 151 ) is applied for each channel signal before it is perceptually encoded ( 16 ). The gain values are transferred in a differential manner as side information. However, for starting decoding of such streamed compressed HOA data frame representation absolute gain values are required, which should be coded with a minimum number of bits. For determining such lowest integer number (β e ) of bits the HOA data frame representation (C(k)) is rendered in spatial domain to virtual loudspeaker signals lying on a unit sphere, followed by normalisation of the HOA data frame representation (C(k)). Then the lowest integer number of bits is set to β e =┌log 2 (┌log 2 (√{square root over (K MAX )}·O)┐+1)┐.

Claim (Index 1):
A method of decoding a compressed Higher Order Ambisonics (HOA) sound representation of a sound or sound field, the method comprising:\n receiving a bit stream containing the compressed HOA representation, demultiplexing the compressed HOA representation from the bitstream, wherein a number of HOA coefficients correspond to the compressed HOA representation, and decoding the compressed HOA representation based on a lowest integer number \u03b2 e  when independent access units are present in the bit stream, wherein the lowest integer number \u03b2 e  is determined based on \u03b2 e =\u250clog 2 (\u250clog 2 (\u221a{square root over (K MAX )}\u00b7O)\u2510+1)\u2510, wherein K MAX =max 1\u2264N\u2264N MAX K(N, \u03a9 1 (N) , . . . , \u03a9 O (N) ), N is the order, N MAX  is a maximum order of interest, \u03a9 1 (N) , . . . , \u03a9 O (N)  are directions of said virtual loudspeakers, O=(N+1) 2  is the number of HOA coefficient sequences, and K is a ratio between the squared Euclidean norm \u2225\u03a8\u2225 2 2  of said mode matrix and O, and wherein \u221a{square root over (K MAX )}= 1 . 5 .

Metadata:
- Claim Count in Document: 5.0
- Percentile: 98.0
- Lexical Diversity: 1.74194
- Patent Class: 381.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15891066', '16019288', '15702418', '15319699', '15319707']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.776095900962508
- 35 USC 102 Novelty (BERT): 0.5539599117928605
- Combined Prediction Score: 0.7538823020455433
- Mean Citation Score: 402.299056
- Max Citation Score: 416.55792
- Similarity Product: 407.1500443746758

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