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Adaptive environmental noise compensation for audio playback

A technology for environmental noise and audio sources, applied in frequency response correction, transmission noise suppression, speech analysis, etc., can solve problems such as boredom and ineffectiveness

Inactive Publication Date: 2013-04-10
DTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This processing is not only annoying, but also ineffective (if the content is replayed a second time at an appropriate volume)

Method used

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  • Adaptive environmental noise compensation for audio playback
  • Adaptive environmental noise compensation for audio playback
  • Adaptive environmental noise compensation for audio playback

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Embodiment Construction

[0024] The detailed description set forth below in connection with the accompanying drawings is only a description of presently preferred embodiments of the invention and is not intended to represent the only forms in which the invention may be made or utilized. The description sets forth the function and sequence of steps that create and operate the invention, in conjunction with the illustrated embodiments. It is to be understood, however, that the same or equivalent functions and sequences can be implemented by different embodiments that are also contemplated as being within the spirit and scope of the present invention. It is also to be understood that the use of relational terms such as first, second and the like are used only to distinguish one entity from another and do not necessarily require or imply any actual such relationship or order between the described entities.

[0025] see figure 1 , a basic Environmental Noise Compensation (ENC) environment includes a compu...

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Abstract

The present invention counterbalances background noise by applying dynamic equalization. A psychoacoustic model representing the perception of masking effects of background noise relative to a desired foreground soundtrack is used to accurately counterbalance background noise. A microphone samples what the listener is hearing and separates the desired soundtrack from the interfering noise. The signal and noise components are analyzed from a psychoacoustic perspective and the soundtrack is equalized such that the frequencies that were originally masked are unmasked. Subsequently, the listener may hear the soundtrack over the noise. Using this process the EQ can continuously adapt to the background noise level without any interaction from the listener and only when required. When the background noise subsides, the EQ adapts back to its original level and the user does not experience unnecessarily high loudness levels.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application Serial No. 61 / 322,674 to Walsh et al., filed April 9, 2009, which is incorporated herein by reference. technical field [0003] The present invention relates to audio signal processing, and more particularly to the measurement and control of the perceived loudness and / or the perceived spectral balance of an audio signal. Background technique [0004] The ever-increasing demand to access content anywhere through various wireless communication devices has resulted in technologies equipped with advanced audio-visual processing equipment. In this regard, televisions, computers, laptops, mobile phones, etc. have enabled individuals to view multimedia content while walking in various dynamic environments, such as airplanes, automobiles, restaurants, and other public and private places. These and other such environments are associated with substantial ambi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B15/00
CPCH04S7/301H04S7/307H04R3/04G10L21/0364G10L21/0232G10L19/02G11B20/24H04B15/00
Inventor M·瓦什E·斯坦恩J-m·约特J·D·约翰斯通
Owner DTS
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