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arXiv 1104.3544cs.SD
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保持清晰度的自动音量控制

An automatic volume control for preserving intelligibility

Franklin Felber

摘要:

已经开发了一种新方法,用于自动调整配备有至少一个麦克风的所有音频设备上的音量,包括移动电话、个人媒体播放器、耳机和汽车收音机,这些音频设备可能在嘈杂的环境中使用,例如人群、汽车和户外。该方法使用一套专利算法,在此类设备的芯片上实现,以在嘈杂的环境中保持恒定的语音清晰度,而不是恒定的信噪比。该算法实时的分析噪声背景,并仅补偿干扰语音清晰度的频域和时域中的波动噪声。这种控制音量的方法的优点包括:在不牺牲清晰度的情况下控制音量;仅针对持续的语音干扰噪声进行调整;平滑音量波动;以及消除由噪声尖峰引起的静态突发。实际的人为因素的方法来实现这些算法在手机上进行了讨论。

英文摘要:

A new method has been developed to adjust volume automatically on all audio devices equipped with at least one microphone, including mobile phones, personal media players, headsets, and car radios, that might be used in noisy environments, such as crowds, cars, and outdoors. The method uses a patented set of algorithms, implemented on the chips in such devices, to preserve constant intelligibility of speech in noisy environments, rather than constant signal-to-noise ratio. The algorithms analyze the noise background in real time and compensate only for fluctuating noise in the frequency domain and the time domain that interferes with intelligibility of speech. Advantages of this method of controlling volume include: Controlling volume without sacrificing clarity; adjusting only for persistent speech-interference noise; smoothing volume fluctuations; and eliminating static-like bursts caused by noise spikes. Practical human-factors approaches to implementing these algorithms in mobile phones are discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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