Unlock instant, AI-driven research and patent intelligence for your innovation.

Signal Decorrelation in Audio Processing Systems

An audio processing and decorrelation technology, applied in the field of signal processing

Active Publication Date: 2018-03-30
DOLBY LAB LICENSING CORP
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Encoding additional data about the encoding process simplifies this decoding process, but at the cost of storing and / or sending the extra encoded data

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Signal Decorrelation in Audio Processing Systems
  • Signal Decorrelation in Audio Processing Systems
  • Signal Decorrelation in Audio Processing Systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0177] The following description is directed to certain implementations for the purpose of describing some of the innovative aspects of the disclosure and examples of contexts in which these innovative aspects may be implemented. However, the teachings herein can be applied in a variety of different ways. Although the examples provided in this application are primarily described in terms of the AC-3 audio codec and the enhanced AC-3 audio codec (also known as E-AC-3), the concepts presented herein are applicable to Other audio codecs, including but not limited to MPEG-2AAC and MPEG-4AAC. Furthermore, the described implementations may be embodied in various audio processing devices, including but not limited to encoders and / or decoders, which may be included in mobile phones, smartphones, tablets, stereo systems, televisions, DVD players , digital recording equipment, and various other devices. Accordingly, it is intended that the teachings of this disclosure be not limited t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The audio processing method may include receiving audio data corresponding to a plurality of audio channels. Audio data may include frequency domain representations corresponding to filter bank coefficients of an audio coding or processing system. The decorrelation process may be performed with the same filter bank coefficients as used by the audio encoding or processing system. The decorrelation process can be performed without converting the coefficients of the frequency-domain representation to another frequency-domain or time-domain representation. The decorrelation process may involve channel-specific and / or frequency-band-specific selective and / or signal adaptive decorrelation. The decorrelation process may include applying a decorrelation filter to a portion of the received audio data to produce filtered audio data. The decorrelation process may include using a non-hierarchical mixer to combine the direct portion of the received audio data with the filtered audio data according to spatial parameters.

Description

technical field [0001] The present disclosure relates to signal processing. Background technique [0002] The development of digital encoding and decoding processes for audio and video data continues to have a significant impact on the delivery of entertainment content. Despite the increase in the capacity of storage devices and the vast amount of available data being transported at increasingly high bandwidths, there continues to be pressure to minimize the amount of data to be stored and / or transmitted. Audio and video data are often transported together, and the bandwidth of the audio data is often constrained by the requirements of the video portion. [0003] Consequently, audio data is often encoded with high compression factors, sometimes 30:1 or higher. Since signal distortion increases with the amount of compression applied, there is a tradeoff between the fidelity of the decoded audio data and the efficiency of storing and / or transmitting the encoded data. [000...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G10L19/008G10L19/02G10L19/06G10L25/06H04S3/00H04S5/00
CPCG10L19/02H04S3/008H04S5/00G10L19/008G10L19/06G10L25/06
Inventor V·麦尔考特颜冠傑G·A·戴维森M·费勒斯M·S·维顿V·库玛
Owner DOLBY LAB LICENSING CORP