Lancaster, PA: Linear Acoustic has
supplied a total of 16 OCTiMAX 5.1 Digital Television Audio Processors to
Liberty Corporation for installation at the company's TV stations around
the country. All systems are currently on-air providing multichannel audio
from two-channel material, or handling 5.1 pass-through from network feeds.
"OCTiMAX also provides full level control and dialog adjustment for our
DTV stations," confides Steve Smith, VP of Engineering/Technology for Liberty
"We had analyzed and tested many analog devices including multiband
processors," Smith continues. "We have never found any digital audio processing
equipment that could perform in both stereo-to-5.1 and original 5.1 HD TV
audio applications until we discovered OCTiMAX. The resultant on-air audio
from OCTiMAX is extremely realistic. The OCTiMAX even makes poor-sounding
incoming 5.1 audio a pleasing experience."
The OCTiMAX 5.1 Digital Television Audio Processor combines multichannel,
multiband dynamic processing with audio metadata functionality and local
audio insertion capability. An Auto Voiceover(tm) feature allows straightforward
insertion of voiceover audio, while an integral UpMax(tm) 5.1 Channel Surround-Field
Synthesizer produces 5.1-channel audio from a standard two-channel mix,
with full control of center width and surround depth.
The resulting signal is fully mono, stereo and matrix surround compatible.
"The voiceover mode is very useful," Smith asserts. "There is nothing more
annoying for a DTV audience than not being able to hear the central dialog
channel in a stereo or 5.1-channel delivery. No other device we investigated
offered such an easy-to-implement solution."
"The Linear Acoustic OCTiMAX 5.1 produces a clean, consistent and appropriately
dynamic audio signal that is perfect for Dolby Digital AC-3, MPEG, or Windows
Media encoding and transmission," considers Linear Acoustic president and
founder, Tim Carroll.
OCTiMAX 5.1 also generates an Lt-Rt-compatible stereo downmix of the
main program that can be used to feed legacy two-channel systems. The processing
structures support eight mono programs, a 5.1 + 2 channel program and any
format in between. "The proprietary processing structure combines a two-band
AGC with five bands of compression, look-ahead and peak limiting for each
channel of audio," Carroll adds. Advanced multiband source noise reduction
is available to improve the sound of legacy films and older television programs.
Linear Acoustic also offers a companion unit, UpMAX(tm) 2251 5.1 Channel
Surround-Field Synthesizer, which produces 5.1-channel audio from a standard
two-channel mix, with full control of center width and surround depth; in
essence it is equivalent to the OCTiMAX 5.1 Digital Television Audio Processor,
but without the dynamic range processing. As such, it is more applicable
to production environments where the 5.1-channel output will be incorporated
with other program sources prior to final broadcast processing.
A major group broadcaster, Liberty Corporation
owns 15 network-affiliated television stations, including eight NBC affiliates
(WAVE-TV, Louisville, KY; WIS-TV, Columbia, SC; WLBT-TV, Jackson, MS; WFIE-TV,
Evansville, IN; WSFA-TV, Montgomery, AL; KCBD-TV, Lubbock, TX; WALB-TV,
Albany, GA and KPLC-TV, Lake Charles, LA); five ABC affiliates (KLTV-TV,
Tyler, TX; KTRE-TV, the satellite affiliate of KLTV in Lufkin, TX; WLOX-TV,
Biloxi, MS; WWAY-TV, Wilmington, NC and KAIT-TV, Jonesboro, AR); and two
CBS affiliates (WTOL-TV, Toledo, OH and KGBT-TV, Harlingen, TX). In addition,
Liberty owns CableVantage Inc., a cable advertising sales subsidiary, and
Broadcast Merchandising Company, a professional broadcast equipment dealership
Chris Knechtel, a consultant
to Liberty Corporation, pictured next to WTOL's Linx Electronics
QuickLinx DTV rack at Liberty's WTOL-HD, Toledo, Ohio.
QuickLinx is a
TV conversion solution that includes the Linear Acoustic OCTiMAX
5.1 Digital Television Audio Processor as well as TVLinx PSIP
generation and all audio and video encoding.
The OCTiMAX 5.1 combines multichannel, multiband dynamic processing
with a stereo-to-5.1-channel up-mixer.
Linear Acoustic has been
involved in projects with Dolby Laboratories, Sirius Satellite Radio, Microsoft,
all major terrestrial networks, multiple local stations, HBO, Viacom (Showtime,
MTV, etc.), Disney, Miramax, Sony Studios, and others. It is also actively
involved in the ATSC, the NRSC and other industry organizations, as well
as being members of the AES, IEEE and a sustaining member of the Society
of Motion Picture and Television Engineers.