AM Audio Processor

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NOVIA 236 is expressly tailored for medium-wave monaural AM broadcasting. It combines the functions of slow, ‘gain-riding’ AGC, ‘syllabic’ consistency leveling, 4 stages of parametric EQ, 3 bands of dynamic range compression with variable crossovers, ‘brick wall’ bandwidth restriction and a final no-splatter peak controller that supports asymmetrical carrier modulation.

Setup and operation are simplified with 10 factory and 10 user-defined processing presets.

Setup and operation are simplified with 10 factory and 10 user-defined processing presets. In addition, the IP interface allows 2-way program streaming, plus total remote control of the NOVIA 236 using any PC or mobile device. SNMP operation is supported.

NOVIA´s parametric equalizer offers continuous control over the audio signal's frequency content with 3 bands of dynamic compression and selectable crossovers.

The NOVIA 236 accepts both program line and streaming inputs and allows remote IP audio monitoring.

Audio Processing for an Authentic Sound


  • Gated and ‘windowed’ gain-riding AGC

  • Unique, adjustable ‘syllabic leveling’

  • 3 bands of dynamic compression with selectable crossovers

  • 4 sections of parametric EQ plus an effective ‘Bass Punch’ feature

  • Independent ‘Density’ and ‘Smooth/Loud’ adjustments

  • GPIOs, Web/email/SNMP for controls and alarms

  • Built-in real time clock and headphone jack

  • Analog, AES-digital, streaming in/outs

  • Selectable US and international cutoff filters

  • A great ‘utility’ processor; ideal ahead of STLs/codecs

  • Full function 'responsive' Web interface works on desktop and mobile devices

  Online Demo Available


Why talk radio stations should be broadcasting in mono, not stereo.

- David Bialik, Radio World Guest Commentary. April 17, 2022 Let´s Talk About Mono

The 236 has improved our sound greatly! It is easy to use, the warranty/repair process is fast and state of the art. We will be purchasing another unit for our other AM station.

- Wayne Blankenship Jr - Across Nations

Excellent value for the money. Novia 236 is compact in size but huge in features. A real winner in a 1/2-rack format. The various levels of customization for the "sound" that's just right for your format are easily accessible from the front panel. The extensive metering allows you to observe every aspect of AGC, equalization and band width.

- Michael Bradford - Bradford Broadcast/Audio Services (USA)

Great little machine. Does everything it is supposed to do.

- Richard L Evans - WXLV, Sellersville, PA

This product has highly enhanced the sound of my AM station. We have been getting numerous calls as to the increase of quality of the sound on the station. Thanks!

- Wayne Blankenship Jr - Program Dir. & Technician. KHAC/KTBA/KWIM - Arizona


Frequency Response (processing bypassed)

50Hz - 20kHz, ±0.25dB

Output Cutoff Response

  • Nominal Frequencies: menu-selectable 4kHz, 5kHz, 6kHz, 7kHz, 8kHz, 9kHz, 10kHz (US NRSC), 12kHz, 15kHz
  • Filter Characteristic: 143-coefficient FIR filter with phase and overshoot compensation; ±0.5dB, 50Hz to 0.95x nominal cutoff frequency; approx. –15dB at cutoff; > –50dB at ≥1.04x nominal.


Selectable flat, or ‘truncated’ US NRSC preemphasis curve scaled to the cutoff frequency

Distortion (processing bypassed)

  • Analog I/O: <0.02% THD (ref: +24dBu I/O)
  • AES Digital I/O: <0.002% THD (ref: 0dBFS I/O)

Signal-to-Noise (processing bypassed)

  • Analog I/O: >105dB (ref: +24dBu I/O)
  • AES Digital I/O: >120dB (ref: 0dBFS I/O)

Program Line Inputs

  • Analog: active-balanced (XLR) accepts line levels from –15dBu to +15dBu; +24dBu clipping, impedance 600 ohms source
  • AES Digital:(XLR) accepts line levels between -30dBFS and 0dBFS at sampling rates from 32kHz to 96kHz
  • IP Streaming: accepts all Icecast/SHOUTcast MP3, Ogg and AAC streams

Program Line Outputs

  • Analog: active-balanced (XLR) delivers –12dBu to +15dBu for 100% symmetrical modulation; +24dBu clipping, impedance 600 ohms source

Positive Peak Enhancement

Intrinsic asymmetrical, positive-going peaks may be selectively limited in 1% steps from 100% to +130%

Program Signal Latency (Delay)

Approx. 3.75ms

Network Port

TCP/IP network connection (RJ45) for remote setup/operation and in/out audio streaming; full support for SNMP control

GPIO Ports

3 GPI, 3 GPO w/ assignable functions and logic polarity

Headphone Jack

Front-panel (TRS) 3.5mm

Internal Test Tone Generator

20Hz-20kHz; variable frequency and level


Local (GPIO) closures, browser interface, SNMP and SMS/email alarms for analog, digital and stream audio loss; maintains daily, weekly, monthly logs


Dayparting is simplified with an onboard real-time clock and preset-selection programming.

Audio Processing

  • AGC: ±15dB capture range; gated with dual-rate‘windowed’ operation
  • Leveling: variable ‘syllabic’ 2:1 compression
  • EQ: 4-section parametric
  • Bass ‘Punch’: variable bass enhancement

Power Requirement

12VDC at 240mA (2.1mm x 5.5mm coaxial); inline switchmode power supply included

Mounting Options

An optional rack adapter mounts one or two NOVIA or other Inovonics half-rack units in a standard 19- inch, 1U rack space.

Size and Weight

1.6”H x 8”W x 6”D; 5 lbs shipping weight


Continuous operation at ambient temperatures between 32ºF/0ºC and 122ºF/50ºC; 0-95% relative humidity, non-condensing, altitudes to 10,000ft/3,048m.