Helmholtz (Free; Max for Live)
Helmholtz is a simple monophonic pitch follower that tracks a monophonic audio source continuously. Pitch data is then scalable and mappable to control any parameter in your Live set.
Plug in a microphone, select the voice preset, and map the pitch of your voice to control audio effects in real-time. Or set Helmholtz to log mode and map the output to the fixed frequency parameter of an oscillator in Operator.
You can download this device directly from Max for Live.
The following additional installation steps are required on Windows:
For 64-bit Max
Copy the 64-bit FFTW DLL from:
to the 64-bit Max application directory:
C:\Program Files\Cycling '74\Max 7\libfftw3f-3.dll
For 32-bit Max
Copy the 32-bit FFTW DLL from:
to the 32-bit Max application directory:
C:\Program Files (x86)\Cycling '74\Max 7\libfftw3f-3.dll