FreqTweak
From Encoresoup - The Ultimate Guide to Free/Open Source Software
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FreqTweak is FFT based, and supports up to 4 channels. An FFT analysis is applied to audio channel, and every individual band can have a different effect applied to it. In version 0.6.1 the following effects are available:
- EQ cut/boost
- Pitch scaling
- Gate
- Compressor
- Delay
- Limit
- Warp

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