01.14.2008 08:55 AM
Originally featured on BroadcastEngineering.com
Linear Acoustic delivers audio processor with Dolby Digital encoding
Linear Acoustic is now shipping its next-generation Aeromax 5.1 10-channel TV audio processor.
The Aeromax 5.1 features a loudness controller, upmixer and metadata manager. The processor accepts 5.1 network audio, two-channel local audio and digital or analog auxiliary/EAS stereo audio. Optional HD-SDI audio and metadata input and internal Dolby Digital (AC-3) or Coding Technologies aacPlus (MPEG-4 HE AAC) encoding are also available.
The Aeromax-5.1 is based on the company’s Octimmax 5.1 digital television audio processor. It combines network-proven dynamics processing algorithms designed by processing expert Leif Claesson with upMAX surround-sound upmixing. It also includes extensive local features such as a full-time two-channel downmix to feed legacy analog paths.
The system’s built-in AutoMAX processing fixes two-channel audio that is broadcast incorrectly as 5.1 channels. This eliminates the annoying image shift that occurs as dialogue moves from the left and right front speakers to the center speaker when programs transition between two and 5.1 channels.
Aeromax-5.1 takes advantage of metadata for the proper processing of audio and to control upmixing and other features offered by the unit. Network and local audio can be handled separately, with metadata used alone or in combination with dynamic range processing, to ensure a high-quality sound experience true to the original audio source.
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