Beethoven Versions Save

Swift 5 migration https://github.com/vadymmarkov/Beethoven/pull/77 by @wlixcc

Updated pitch engine input by @anandchandra50 https://github.com/vadymmarkov/Beethoven/pull/56

Fix to avoid calling start twice https://github.com/vadymmarkov/Beethoven/pull/55 by @makuearth

Swift 4 migration 🌮

Fix PitchEngine start on iOS10 by @glaurent https://github.com/vadymmarkov/Beethoven/pull/43

• YIN algorithm by @glaurent https://github.com/vadymmarkov/Beethoven/pull/39
• Example project in Swift 3 by @glaurent https://github.com/vadymmarkov/Beethoven/pull/39
• Breaking changes in config, see https://github.com/vadymmarkov/Beethoven/pull/40

Swift 3 conversion https://github.com/vadymmarkov/Beethoven/pull/35 by @glaurent

• Fix InputSignalTracker.stop() https://github.com/vadymmarkov/Beethoven/issues/31
• Fix HPSEstimator.estimateLocation https://github.com/vadymmarkov/Beethoven/pull/30

Thanks @glaurent for contribution!

"Signal level threshold" feature which lets the user set a signal level below which no pitch detection is attempted. Thanks @glaurent who made it happen https://github.com/vadymmarkov/Beethoven/pull/26

• Audio signal tracking with AVAudioEngine and audio nodes (Available in iOS 8.0 and later).
• Pre-processing of audio buffer by one of the available "transformers", to convert AVAudioPCMBuffer object to the array of floating numbers (with possible optimizations).
• Pitch estimation.