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The Delay Time Calculator (DTC) calculates delay times in milliseconds and
frequency modulation values in Hertz for a song tempo in 'beats per minute',
for a frequency value, or for a measure duration and signature.
Also included is a tempo tap feature.

There are many uses for this utility, for example calculation of

 - pre-delay times for reverbs

 - delay times for software or hardware effects without tempo sync

 - frequency modulation values that fit a song tempo,
   eg. for synthesizer or filter LFOs, modulation effects like chorus,
   flanger, phaser, vibrato, tremolo, you name it.