|
Audio levellers control programme levels automatically, so whatever happens in the studio, your broadcast sound is always 100% clearly audible at a comfortable listening level.
Audio Levellers are typically deployed at the studio output point, where audio signals are switched, fed to analogue or DAB radio transmitters, or when feeding into STLs, a programme distribution matrix or computer sound cards.
As their name suggests, levellers are designed to control audio levels but without changing the texture or quality of the broadcast sound in any way. Audessence levellers employ sophisticated digital control techniques and algorithms to maintain perfect audio clarity and fidelity. They can also be used in front of typical transmission 'Air-chain' audio processors without unnecessary duplication of functions leading to audible conflicts or over-processed sound.
Levelling is also an ideal form of audio processing for bit-rate compacted audio such as web-streaming and podcasting. By maintaining the original short term peak-to-average ratio and spectral balance of the programme whilst seamlessly reducing longer term level variations, interference with the psycho-acoustic principles underlying commonly used digital codecs such as MPEG / .mp3 is avoided. The result is that audio quality, audibility and clarity are significantly improved compared to conventional compressors and even most multiband broadcast audio processors.
Sophisitcated 'sure-level' digital AGC technology yields rapid and unobtrusive real-time level correction. Typically a 30dB or greater input range results in a 6-8dB output range even within a few seconds of a major level transition - without undesirable side-effects such as obviously audible compression, pumping, or breathing.
All Audessence audio leveller products now include ITU-1770 loudness compliance mode, with processing to the newer RLB2 curve.
| 
