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A Voice Modulator

A Voice Modulator. Adam Rosenfield Lunduo Ye 6.111 Spring 2007. Features. Inputs Voice audio from microphone Keyboard chords Modulate voice to match chord frequencies, preserving overtones Outputs Voice at specified pitch(es). Block Diagram. AC97 Interface. VGA Interface.

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A Voice Modulator

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  1. A Voice Modulator Adam Rosenfield Lunduo Ye 6.111 Spring 2007

  2. Features • Inputs • Voice audio from microphone • Keyboard chords • Modulate voice to match chord frequencies, preserving overtones • Outputs • Voice at specified pitch(es)

  3. Block Diagram

  4. AC97 Interface

  5. VGA Interface

  6. Implementation Details • Analyze FFT on 256-frame period • Block RAMs for audio caches • Downsample as necessary to allow “realtime” playback

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