PATENT CLAIM ANALYSIS

Application Number: 16004774
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-10
Patent Classification: ["381", "303000"]

Abstract:
When a channel signal, such as a 22.2 channel signal, is rendered into a 5.1 channel signal, a three-dimensional (3D) audio may be reproduced by using a two-dimensional (2D) output channel, however, when an elevation angle of an input channel is different from a standard elevation angle, if elevation rendering parameters according to the standard elevation angle are used, distortion may occur in a sound image. In order to solve the aforementioned problem according to the related art and to prevent front-back confusion due to a surround output channel, an embodiment of the present invention provides a method of rendering an audio signal, the method including receiving a multichannel signal including a plurality of input channels to be converted to a plurality of output channels; adding a preset delay to a frontal height input channel so as to allow each of the plurality of output channels to provide a sound image having an elevation at a reference elevation angle; changing, based on the added delay, an elevation rendering parameter with respect to the frontal height input channel; and preventing front-back confusion by generating, based on the changed elevation rendering parameter, an elevation-rendered surround output channel delayed with respect to the frontal height input channel.

Claim (Index 1):
A method of elevation rendering an audio signal, the method comprising:\n receiving multichannel signals including a height input channel signal; obtaining first elevation rendering parameters for the multichannel signals; obtaining a delayed height input channel signal by applying a predetermined delay to the height input channel signal if a label of the height input channel signal is one of frontal height channel labels; obtaining second elevation rendering parameters based on labels of two output channel signals if the label of the height input channel signal is one of frontal height channel labels, wherein the labels of the two output channel signals are surround channel labels; and elevation rendering the multichannel signals and the delayed height input channel signal to output a plurality of output channel signals based on the first elevation rendering parameters and the second elevation rendering parameters if the label of the height input channel signal is one of frontal height channel labels, wherein the first and second elevation rendering parameters comprise at least one of panning gains and elevation filter coefficients.

Metadata:
- Claim Count in Document: 11.0
- Percentile: 94.0
- Lexical Diversity: 2.30612
- Patent Class: 381.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15322051', '15300077', '14781235', '15371453', '15000876']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7000627786279031
- 35 USC 102 Novelty (BERT): 0.5461973985741245
- Combined Prediction Score: 0.6846762406225252
- Mean Citation Score: 259.832842
- Max Citation Score: 395.41235
- Similarity Product: 386.98518123191

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