Forums > MaxMSP

scaling output to percieved loudness

Nov 02 2013 | 2:56 pm


I am going to use random numbers to control amplitude but I would to scale the output so that they produce changes in percieved loudness, what is the formula for this?

For example random numbers between 0 and 100 would be scaled to 0 to 1 but in a way that 25 produces a quater percieved maximum volume, 50 half the percieved maximum and 100 the maximum output. I believe I need to scale in an exponential ot logarithmic way because hearing isn’t linear with respect to loudness.

please help :)

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