PATENT CLAIM ANALYSIS

Application Number: 16019288
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-10
Patent Classification: ["381", "310000"]

Abstract:
When compressing 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 2):
An apparatus for decoding a compressed Higher Order Ambisonics (HOA) sound representation of a sound or sound field, the apparatus comprising:\n a processor configured to receive a bit stream containing the compressed HOA representation and decoding the compressed HOA representation to determine perceptually decoded signals {circumflex over (z)} i (k), i=1, . . . , I, associated gain correction exponent e i (k) and gain correction exception flag \u03b2 i (k); wherein the processor is further configured to re-distribute gain corrected signal frames \u0177 i (k), i=1, . . . , I, during channel reassignment, in order to reconstruct a frame {circumflex over (X)} PS (k) of predominant sound signals and a frame c I,AMB (k) of an intermediate representation of an ambient HOA component, wherein a lowest integer number \u03b2 e  of bits applied to a signal of a transport channel in a previous frame is based on\n \u03b2 e =\u250clog 2 (\u250clog 2 (\u221a{square root over ( K MAX )} \u00b7O )\u2510+1)\u2510, \n wherein K MAX =max 1\u2264N\u2264N MAX K(N, \u03a9 1 (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,\n wherein \u221a{square root over (K MAX )}=1.5.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 94.0
- Lexical Diversity: 1.74194
- Patent Class: 381.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15702418', '15319699', '15319707', '15891066', '15702471']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7545331340890415
- 35 USC 102 Novelty (BERT): 0.5624145626322798
- Combined Prediction Score: 0.7353212769433654
- Mean Citation Score: 403.80444
- Max Citation Score: 427.52606
- Similarity Product: 419.2477004702759

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