With the help of this app you can convert few acoustic scales into psycho-acoustic scales and vice versa
To convert the frequency to ERB width and ERB rate, enter the frequency value in Hertz and press “convert”. To convert semitones to Hz, enter the F0 value in Hz and also enter the semitone value for which the corresponding frequency value has to be estimated. Then press “calculate”. To find out the cochlear place frequency relation, enter the place (distance) value in millimeter and then press “convert” which will give corresponding frequency value.