Welcome to MpxTool.com! PDF Print E-mail
mpxtool-shadowMpxTool is a modulation monitoring suite entirely in software. It contains a reference quality Stereo Encoder and Decoder, and allows realtime playback and recording of signals.

It's an invaluable tool for anyone interested in the technical side of FM broadcasting, whether regarding Audio Processing or Air-chain Calibration, work or passion.

MpxTool makes it easy to compare audio processors, calibrate your airchain, and monitor other stations off air.
 
MpxTool Example Applications Print E-mail
  • Monitor your on-air signal or the competition's!
    Using a tuner with MPX output, MpxTool can be used as an off-air modulation monitor and analyzer. Is the competition cheating? Find out!
  • Compare two or more audio processors in a carefully controlled shootout. Record the output of each processor separately (with common program material) and play them back in MpxTool, switching on the fly, with phase linear reference quality stereo decoder, and a whole suite of modulation monitoring equipment built in. You can also output composite, to feed an exciter and listen on an actual tuner.
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Off-air Monitoring PDF Print E-mail

MpxTool can be used as a highly accurate off-air modulation monitor.

 

To use MpxTool for this task, you need a sound card capable of 192 KHz recording, and a tuner with MPX output.

 

You will also need a known good exciter to use while calibrating the system.

 

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A/B comparison PDF Print E-mail

processor_stackMpxTool can be used to compare two or more audio processors in a carefully controlled shootout.

MpxTool lets you record the output of each processor separately (with common program material) and play them back in MpxTool, switching on the fly, with a whole suite of modulation monitoring equipment built in. You can also output composite, to feed an exciter and listen on an actual tuner.

 

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FM Processor Torture Test PDF Print E-mail

 

The official Modulation Arts FM Processor Torture Test is an 80 minute long collection of very difficult program material for FM processors. Download recordings of popular processors, and download the original and run it through your airchain to see how it measures up!

 

 

Available for download: Original, Omniatm 6EXi (MPX), Optimodtm 8500 (MPX), Optimodtm 8200 (L/R), DSP-Xtm Mini SE, DSPXtremetm, Breakaway Broadcast, and CRL Amigo-FM.

 

Warning: These files are FM Stereo MPX with 75us pre-emphasis.
Mind your ears (and speakers) -- do not play in a regular media player. Use MpxTool.

 

 

Also see the Table of Contents.

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