Tensilica HiFi Audio DSP Supports Dolby Volume to Eliminate Volume Fluctuations in Home Entertainment Systems and DTVs

Dolby Volume enables designers of SOCs (systems on chips) for home entertainment systems and digital televisions, and for handsets with mobile DTV, to provide viewers with a consistent playback volume level across all sources and content. The technologies behind Dolby Volume, such as loudness-domain signal processing and auditory scene analysis, use advanced models of human hearing based on psychoacoustics, the science of human hearing. This makes it possible to correct source and content level differences without undesirable artifacts, such as pumping and breathing, introduced by previous compression and expansion techniques.

Dolby Volume also actively balances low, middle and high frequencies in each channel to compensate for the ear's changing sensitivity as the playback level is raised or lowered. As a result, the nuances and impact of the original mix are maintained even at low playback levels.