A Real-Time Signal Processing Technique for MIDI Generation

This paper presents a new hardware interface using a microcontroller which processes audio music signals to standard MIDI data. A technique for processing music signals by extracting note parameters from music signals is described. An algorithm to convert the voice samples for real-time processing without complex calculations is proposed. A high frequency microcontroller as the main processor is deployed to execute the outlined algorithm. The MIDI data generated is transmitted using the EIA-232 protocol. The analyses of data generated show the feasibility of using microcontrollers for real-time MIDI generation hardware interface.

Authors:

• Farshad Arvin
• Shyamala Doraisamy

Keywords:

• Signal processing
• MIDI
• Microcontroller
• EIA-232.

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