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Adapted audio response

An audio signal and audio processing technology, applied in the field of self-adaptation, can solve problems such as discomfort and danger

Inactive Publication Date: 2008-06-25
BOSE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Ambient noise enters lower-volume passages, which can make subsequent higher-volume passages uncomfortable or potentially dangerous unless the audio is heard at a sufficiently high volume

Method used

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Examples

Experimental program
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Embodiment Construction

[0090] 1. System Overview (Figure 1)

[0091] Referring to FIG. 1 , an audio system 100 includes an earphone unit 110 worn by a user. The earphone unit receives an audio signal input 131 from an audio source 130 . Audio source 130 includes a volume control 132 that is adjustable by the user. Acoustic implementation of the user hearing the audio signal input generated within the earbud.

[0092] Typically, ambient acoustic noise is generated by noise sources 140 such as machinery noise sources, people talking in the background, and the like. Ambient acoustic noise is attenuated by the physical design of the earphone unit 110 (eg, by the design of the earbuds 112 and ear pads 114) and in part by using an active noise reduction system embedded in the earphone unit. The audio signal input 131 is processed in the signal processor 120 of the headphone unit, from which a driver output signal 127 is passed to the driver 116, which produces an acoustic realization of the audio sign...

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PUM

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Abstract

Adapting an audio response addresses perceptual effects of an interfering signal, such as of a residual ambient noise or other interference in an earpiece of a headphone. In one aspect, an input audio signal is presented substantially unmodified when it is at levels substantially above the interfering signal and is compressed when at or below the level of the interfering signal. The approach can make use of a measured level of an acoustic signal, for example, within an earpiece of a headset, and use the measured level in conjunction with the level of an input audio signal to determine compression characteristics without requiring separation of an interfering signal present in the monitored acoustic signal from a component related to the input audio signal. In another aspect, presentation characteristics of an input audio signal are determined to reduce distraction from an interfering signal, such as from a background conversation.

Description

technical field [0001] The present invention relates to adaptation of audio response in response to noise or other interfering environmental signals. Background technique [0002] When a person puts on headphones to listen to music, sound or other audio, he is usually seeking a personal feeling. Using headphones will render the audio in such a way that it doesn't disturb others next to him and hopefully prevents sounds around him (ie, ambient noise like conversations, background noise from airplanes or trains, etc.) from interfering with his audio enjoyment . [0003] Ambient noise can enter lower volume passages, which can make subsequent higher volume passages uncomfortable or potentially dangerous unless the audio is heard at a sufficiently high volume. Using closed-back, noise canceling, and especially active noise canceling (ANR) headphones can help by reducing the level of ambient noise at the ear. With this type of noise reduction, the dynamic range achievable betw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/02H03G3/32H03G7/00
CPCH03G7/002G10L21/02H03G3/32
Inventor D·M·小高杰C·B·伊克勒N·哈纳加米E·C·小约翰逊
Owner BOSE CORP
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