[Legacy Report] Audio Considerations for Mobile DTV

#mobile #television #DTV #audio

Mobile television is quickly emerging as a new medium for experiencing video programming. Devices are generally quite small and include handheld televisions, mobile phones, tablets, laptops and related devices. The dynamic range “comfort zone” used for mixing television audio for viewing on stereo or surround in-the-home televisions is far too wide for comfortable listening on typical “earbuds” or worse, the tiny speakers in the mobile device.

Dialogue intelligibility is a serious issue for these less-than-ideal transducers. Physical and electrical limitations impact audio quality and can reduce intelligibility. Further, the environments where mobile television would typically be used have a relatively high background noise loudness floor – if the volume is simply increased for acceptable intelligibility on soft passages, loud passages run the risk of outstripping device capabilities or worse, potentially causing uncomfortably loud audio.

The goal is to deliver to the viewer the most satisfying experience appropriate for widely varying individual listening environments. Research has shown that attempts to improve mobile audio by simply employing traditional broadcast audio processing systems actually make things worse.

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