Online music calculating tools to help you compute the correct values for those time-based effects like time-stretching, pitch-shifting or for just simply finding the correct delay time for your mix...
... bookmark and enjoy!
This calculator will give you the nearest note to a given frequency as well as it's MIDI number - useful perhaps for when you want to find a "problem" note within your mix to target.
Tools for time-stretching your sample loops without altering their pitch.
Below the fold: Time-Stretch sample loops calculator; and a Transposing, Time-stretching and Tempo Calculator.
If you don't own a software audio editor that can time-stretch samples automatically - like, for instance, Sonic Foundry's Acid - then these tempo adjustment calculators are just the tools you need.
Below the fold: Tempo Transposer and a Tempo and Pitch-Shifting Calculator
To create an audible rhythm with the delay effect, you should synchronise the delay time to the rhythm of the music.
Below the fold: a Delay Time Generator and Delay and Frequencies Calculator.
These calculators allow you to find the tempo (BPM) of a song from either the length in milliseconds(ms) or from the sample length.