Lancaster, PA (April 17, 2006)–Linear Acoustic will spotlight two new surround-sound solutions at the NAB Convention, April 24-27, in Booth C2507B/5.1 Pavilion.
AEROMAX-TVT AEROMAX-TVT Stereo Television Audio Processor is a dynamics unit for two-channel main plus SAP audio with front-panel display and controls plus Ethernet remote control. The four-channel unit can be configured as 2+2 or 2+1+1 (stereo plus two mono channels). CrowdControlT Dialog Protection Processing is provided for the main program audio.
CrowdControlT Dialog Protection Processing solves intelligibility problems reported by viewers–a major headache for TV broadcasters tasked with providing stereo and surround soundtracks for live events. “If the crowd or audience ends up too loud in the surround channels due to an excited crowd or an overly aggressive mix,” said company founder Tim Carroll, and an acknowledged expert in multichannel audio, “user-selectable effects such as ‘Hyper Surround’ modes offered by the majority of today’s stereo TV receivers can dramatically mask the announcer voice.” This new Linear Acoustic DSP algorithm developed specifically for AEROMAX-TV eliminates the problem for stereo viewers prior to transmission without impacting sound quality for surround listeners.
MetaMAXT Model 5151 DTV Audio Bitstream Processor enables multichannel audio to be transmitted the way producers intended while protecting consumers from loud commercials and programs. Located at the point of transmission, MetaMAXT is a 5.1-channel DTV audio processor that operates completely in the compressed domain, and protects dynamic range while controlling loudness.
“Until now, solving short-term loudness problems has meant dramatically reducing the quality of the audio soundtrack–simply to fix the impact of one annoyingly loud commercial,” Carroll offered. Using standardized metadata inserted within the digital broadcast signal just prior to transmission, MetaMAX generates dynamic range control parameters more suited to television broadcasting, and delivered to consumer decoders where it is applied by default. “Viewers are then protected automatically from loudness shifts, while the audio quality remains untouched for those who choose to experience the original, wide-dynamic range audio.”