Control the pitch, tempo, octave of audio

[ganglithe]

I’m building mobile app with react native.
I want to control pitch, tempo, octave property of an audio while the audio is playing.
Can I implement this functionality using JUCE?

[Mrugalla]

yes. is the audio played from a file or recorded in realtime via the mic?

[ganglithe]

Yes, Both of them.
The audio is recorded via mic and my project is react native.
Can you give me super guide about my case, please?
Are you support team or general user of JUCE?

[kriskeillor]

There is some good discussion on resources and pros/cons for Juce + react native development here:

React Native with JUCE

I am building a React Native application that needs to interface with JUCE audio code. Does anyone have a solid example if integrating the two together? I have passed JavaScript down through native modules to C++, but am unsure how to link the JUCE libraries from there. Thanks!

There are also many discussions on pitch, tempo, and octave in the forum:

• Best approach for a simple pitch adjustment plugin
• Pitch Shift/Slow Down Algorithms
• Pitch shifting in JUCE
• Change tempo while playing
• MIDI tempo adjustment?
• How can change frequency of audio file