A Raspberry Pi real-time pitch-shifting microphone project. Stay Tuned...
Clone and cd into pitch-perfector
cmake .make./Code/fft_object/PitchPerfector
The MEMS microphone converts the vocal (from ~100Hz up to ~3.5kHz) input into an analogue signal
The I2S ADC in the Adafruit microphone converts this audio to I2S format which is understood by the Raspberry Pi with a datarate of 240kbps
Frequency analysis is performed by applying a fourier transform and identifying the base frequency
Pitch shifting then shifts the frequency components of the signal using phase vocoding so they match the note input by the GUI or to a predetermined scale value
This new shifted value is then output to a speaker
Utilised the FFTW3 and RtAudio packages for real-time pitch shifting
For more information, see the project Wiki
For code documentation, see the Doxygen documentation published on every commit
Project Twitter: @PerfectorPitch
Project YouTube: Pitch Perfector
For licencing information see Licence