Audio spatial environment up-mixer

A space environment and audio technology, applied in speech analysis, instruments, etc., can solve the problem of unusable audio data and achieve the effect of improving sound quality and spatial distinction

Active Publication Date: 2007-10-31
DTS
View PDF2 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One problem raised by the increased number of formats or environments is that audio data processed for optimum audio quality in a first environment often cannot be easily used in a second audio environment

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
  • Audio spatial environment up-mixer
  • Audio spatial environment up-mixer
  • Audio spatial environment up-mixer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] In the ensuing description, the same reference numerals are used to designate the same parts throughout the specification and drawings. The drawings may not be to scale and some components may be shown in generalized or schematic form and identified by trade names for clarity and conciseness.

[0026] 1 is a diagram of a system 100 for dynamic downmixing from an N-channel audio format to an M-channel audio format using an analysis and correction loop, according to an exemplary embodiment of the present invention. System 100 uses 5.1 channel sound (ie, N=5) and converts 5.1 channel sound to stereo (ie, M=2), although other suitable numbers of input and output channels can also or instead be used.

[0027] The dynamic down-mixing process of system 100 is implemented using reference down-mixing 102 , reference up-mixing 104 , subband vector calculation systems 106 and 108 , and subband correction system 110 . The analysis and correction loop is implemented by reference up...

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

An audio spatial environment engine is provided for converting between different formats of audio data. The audio spatial environment engine allows for flexible conversion between N-channel data and M-channel data and conversion from M-channel data back to N'-channel data, where N, M, and N' are integers and where N is not necessarily equal to N'. For example, such systems could be used for the transmission or storage of surround sound data across a network or infrastructure designed for stereo sound data. The audio spatial environment engine provides improved and flexible conversions between different spatial environments due to an advanced dynamic down-mixing unit and a high-resolution frequency band up-mixing unit. The dynamic down-mixing unit includes an intelligent: analysis and correction loop capable of correcting for spectral, temporal, and spatial inaccuracies common to many down-mixing methods. The up-mixing unit utilizes the extraction and analysis of important inter-channel spatial cues across high-resolution frequency bands to derive the spatial placement of different frequency elements. The down-mixing and up-mixing units, when used individually or as a system, provide improved sound quality and spatial distinction.

Description

[0001] related application [0002] This application claims U.S. Provisional Application 60 / 622,922, filed Oct. 28, 2004, entitled "2-to-N Rendering," U.S. Patent Application 10 / 975,841, U.S. Patent Application 11 / 261,100, also filed hereto, entitled "Audio Spatial Environment Down-Mixer" (Attorney Docket No. 13646.0014), and U.S. Patent Application 11, also filed hereto, entitled "AudioSpatial Environment Up-Mixer" Priority of / 262,029 (Attorney Docket No. 13646.0012), each of which is commonly owned and is hereby incorporated by reference for all purposes. technical field [0003] The present invention relates to the field of audio data processing, and more particularly to a system and method for converting between different formats of audio data. Background technique [0004] Systems and methods for processing audio data are known in the art. Most of these systems and methods are used to process audio data in a known audio environment, such as a two-channel stereo envi...

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 Applications(China)
IPC IPC(8): G10L19/00
CPCG10L19/008
Inventor 罗伯特·W·里姆斯杰弗里·K·托姆普森阿伦·瓦尔纳
Owner DTS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap