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Modification of the tonal scale of sound - open source examples?

Does anyone know of any open source libraries / implementations of real-time time-change algorithms?

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4 answers

Scaletempo can do what you want. MPlayer uses it.

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DSP Dimension provides some good pitch shift guidance and time-scale modification . There are many links to related materials (various libraries, tutorials, and implementations), as well as an open-source Fourier-based implementation in C ++ (see the Download section).

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Try the Rubberband library . It is licensed by the GPL and includes a library, as well as CLI applications that use it.

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Just to add to this list, by the way, the SoundTouch C ++ library can do this: http://www.surina.net/soundtouch/

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Source: https://habr.com/ru/post/1793907/

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