audiokit

问题 I'm making audio editing app, and I want trim my audio. For audio editing I use AudioKit framework. But I can't find in tutorials, and examples, how I can trim audio using this framework? 回答1: Export asynchronously allows for setting the start and end samples: https://github.com/AudioKit/AudioKit/blob/master/AudioKit/Common/Internals/Audio%20File/AKAudioFile%2BProcessingAsynchronously.swift#L267 /// Exports Asynchronously to a new AKAudiofile with trimming options. /// ... /// - fromSample:

问题 I have a function for changing the instruments in our app, at runtime. The intention is to allow for something like "presets" that can change the instrument setup — a little like what you'd see with a "song" file for a DAW. The problem I'm having is that new mixer connections don't seem to be made correctly, so that audio doesn't get from newly added instruments to the output. My overall signal chain could be pictured like: [(Instrument Node -> [Instrument Effects] -> AKBooster)] ->

问题 I'm trying to play a midi file as a wav audio is being played. I've tried with let akSequencer = AKSequencer(filename: "melody") akSequencer.enableLooping() akSequencer.play() But it only plays the first note and nothing else. Also, I'm not being able to use a mixer to mix it with the wav file that it's being loaded like: let akMidiSampler = AKMIDISampler() let akSampler = AKSampler() let wavFile = try AKAudioFile(forReading: wavUrl!) try akSampler.loadAudioFile(wavFile) let mixer = AKMixer

问题 Sorry, this may be a dumb question, but I am new to MIDI and no musician - I am trying to figure out if I can use a MIDI Controller for some other control application. I know how to set up the MIDI system and receive MIDI events using AudioKit.midi in iOS. I am trying to find out if I can determine the state of let's say a Midi Knob, without it sending events? As soon as I start turning a knob I get events - so at the moment in order initialize the system I have to turn every button so it

问题 Running the build_frameworks.sh script sometimes results in this cryptic error. Why does it do it and how can I fix it ~/Code/AudioKit/AudioKit () ./Frameworks/build_frameworks.sh cat: ../VERSION: No such file or directory Building frameworks for platforms: iOS macOS tvOS Ignoring configuration file 'simulator.xcconfig' because it could not be loaded. Reason: File could not be parsed due to preprocessing errors: The file “simulator.xcconfig” couldn’t be opened because there is no such file. (

问题 Running the build_frameworks.sh script sometimes results in this cryptic error. Why does it do it and how can I fix it ~/Code/AudioKit/AudioKit () ./Frameworks/build_frameworks.sh cat: ../VERSION: No such file or directory Building frameworks for platforms: iOS macOS tvOS Ignoring configuration file 'simulator.xcconfig' because it could not be loaded. Reason: File could not be parsed due to preprocessing errors: The file “simulator.xcconfig” couldn’t be opened because there is no such file. (

问题 After calling AudioKit.stop() , and then subsequently calling AudioKit.start() , I'm unable to reconnect my AKMixer / AKPlayer to AudioKit. It appears that the engine starts successfully but no sound is produced when I call player.play() . I'm not quite sure what I'm missing. I've boiled it all down to a simple demo project and I've included the most important sections of code below. View controller class ViewController: UIViewController { public let tickSound = MySound(url: "tick.wav")

问题 After calling AudioKit.stop() , and then subsequently calling AudioKit.start() , I'm unable to reconnect my AKMixer / AKPlayer to AudioKit. It appears that the engine starts successfully but no sound is produced when I call player.play() . I'm not quite sure what I'm missing. I've boiled it all down to a simple demo project and I've included the most important sections of code below. View controller class ViewController: UIViewController { public let tickSound = MySound(url: "tick.wav")

问题 I am developing an Karaoke app in which you can record your voice while listening to the music. When user uses headphones, everything is great - he can listen to the music and himself in headphones while singing. Then we have his pure voice recorded and we can mix it with playback. Problem occurs when user does not use headphones. Then we play music via speakers AVAudioSessionCategoryPlayAndRecord and record simultaneously. In final recording we have user's voice and playback from speakers

问题 I am developing an Karaoke app in which you can record your voice while listening to the music. When user uses headphones, everything is great - he can listen to the music and himself in headphones while singing. Then we have his pure voice recorded and we can mix it with playback. Problem occurs when user does not use headphones. Then we play music via speakers AVAudioSessionCategoryPlayAndRecord and record simultaneously. In final recording we have user's voice and playback from speakers