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首页> 外文会议>2010 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB 2010) >Loudness and auditory masking compensation for mobile TV
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Loudness and auditory masking compensation for mobile TV

机译：移动电视的响度和听觉掩蔽补偿

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摘要

Quality of Experience in mobile multimedia services is subject to environmental changes. Especially in urban environments, several types of background noises affect the perceived quality of audio content, and the characteristics of noise can rapidly change within a few minutes of travel. Also, the change of loudness in the multimedia content itself can be annoying - users will have to adjust volume settings for each specific content type when there is a high dynamic loudness behaviour. It is therefore necessary to automatically adapt the audio playback to the environmental conditions by implementing several methods and testing them. To develop these methods, the impact of environmental noise on the subjective setting of volume needed to be studied by performing a first experiment with human observers. Then, various processing schemes were applied to the audio tracks. These include the decreasing of available headroom as a simple mean of dealing with high loudness dynamics, but also multiband compression alongside noise-specific equalization, which can be used for complex content types such as classical music. Their effect on users perception has been studied by performing two additional user studies.
机译：移动多媒体服务的体验质量会随着环境的变化而变化。特别是在城市环境中，几种类型的背景噪声会影响音频内容的感知质量，并且噪声的特征会在旅行的几分钟内迅速变化。而且，多媒体内容本身的响度变化可能很烦人-当动态响度行为较高时，用户将不得不针对每种特定内容类型调整音量设置。因此，有必要通过实施多种方法并对其进行测试，使音频播放自动适应环境条件。要开发这些方法，需要通过与人类观察者进行的首次实验来研究环境噪声对音量的主观设置的影响。然后，将各种处理方案应用于音轨。这些措施包括减少可用净空作为处理高响度动态的简单方法，还包括多频带压缩以及噪声特定的均衡，可用于复杂的内容类型，例如古典音乐。通过执行另外两个用户研究，研究了它们对用户感知的影响。

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