www.96kHz.org
advanced audio recording

 
Audio to MIDI converter with FPGA in VHDL
  Audio

2

MIDI


48kHz

audio to midi converter with FPGA - Jürgen Schuhmacher 2004

This design in VHDL for PLDs and FPGAs converts one channel audio data in real time into MIDI-like tone information. It fits well into the Audio-DSP-Workstation. By analyzing the incoming audio stream with a small DFT-like algorithm, the dominating frequency is found thus suppressing harmonics. The corresponding MIDI tone number is discovered using a frequency table. This design is based on an idea, formerly realized for DSP-Systems in C-language and had been changed to VHDL for a modern Spartan 2 FPGA.

See the former article for more details.
 
48 kHz
Audio DSP

 

© Sound of L.A. Music Productions 2004