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Audessence AM PRO-1 AM Transmission Processor

The Audessence AM PRO-1 is a complete air-chain audio processing system for AM radio stations. Adjustable input pre-filtering (lowpass and high-pass) pre-conditions audio to prepare for aggressive 'brick-wall' low-pass filtering later and avoids wasting modulation percentage on inaudible sub-bass components. Unsurpassed Audessence AGC developed for the professional Audessence levellers keeps programme level as consistent as desired. Programme compression, limiting, pre-emphasis and clipping for optimum loudness and coverage increase. All this plus enhancement features for brightening and clarifying your programme. Adjustable Low-Pass filtering meets all international and national broadcasting specifications including ITU and NRSC (4kHz to 15kHz nominal).

Features:

  • Complete digital air-chain processing for AM radio broadcasters in a compact package
  • Adjustable input High-pass filter 3Hz to 200Hz
  • Phase rotator to reduce programme asymmetry
  • Advanced AGC as used in our ‘ALPS’ levellers offers unsurpassed rapid control of levels
  • Independent programme compression stage
  • Presence enhancer to brighten programme and cut through noise
  • Choice of pre-emphasis to meet national requirements including NRSC
  • Adjustable low-pass filter for all applications Fco 4.5kHz to 10kHz
  • Sophisticated peak control dramatically increases loudness without digital grunge
  • Positive peak asymmetry up to 145% (where legal)
  • Factory presets deliver exactly the results you need for any application …fast
  • No-tamper front panel (set-up by PC only: GUI software, USB and RS-232 ports provided)
  • Bright, Always-Visible LED bargraphs for audio confidence checks
  • Low audio latency (4 milliseconds), fast boot-up (<1 second).

BENEFITS:

  • Loud, clean audio for AM broadcasting
  • Handles speech just as well as music (not all digital audio processors manage this!)
  • Improves audibility and clarity of programme
  • Meets all national and international spectral occupancy and other specifications
  • Automatically adjusts levels if output from studio is too low

APPLICATIONS:

Audio processing for all AM broadcast applications:

  • LW
  • MW (AM)
  • SW/HF