I'm working on an iOS app with Swift and Xcode 6. What I would like to do is play an audio file using an AVAudioEngine, and until this point everything OK. But how can I play it without stopping, I...

I am using AVAudioSession and AVAudioInputNode to record voice in iOS. To initialise it I was using the following settings, which was working fine: [AVFormatIDKey: kAudioFormatLinearPCM, AVLinear...

Each time I stop/pause the audio engine (using AVAudioEngines stop() or pause()), a red mic icon appears on the status bar for a second. This starts to be annoying after a while, something red app...

I am trying to use the new AVAudioEngine in iOS 8. It looks like the completionHandler of player.scheduleFile() is called before the sound file has finished playing. I am using a sound file with...

I'm attempting to connect an AVAudioUnitEffect to an instance of AVAudioEngine like so: required init(inputFormat: AVAudioFormat, outputFormat: AVAudioFormat, andAVAudioEngine avAudioEngine:AVAudi...

For the past few weeks, I've ben trying to hobble together a solution from a number of different examples which will allow me to: Capture the audio from the microphone Down-sample it to 8khz Enco...

I am making a basic music app for iOS, where pressing notes causes the corresponding sound to play. I am trying to get multiple sounds stored in buffers to play simultaneously with minimal latency....

I have the following test code for getting realtime microphone input on macOS: import AVFoundation // for AVAudioEngine class Mic { public let audioEngine = AVAudioEngine() func startRecording...

I have started getting a crash that did not previously happen with initialization of recording with the error: [avae] AVAEInternal.h:70:_AVAE_Check: required condition is false: [AVAudioIONodeImpl...

I use AVPlayer to play audio(streaming or local file). For this audio I want to apply some effects - boost volume, skip silence, reduce noise, change speed(in 0.1 intervals). I did same thing in a...

I'm working on a mac application that mix audio from a VideoCard and an external audio card. How can I change volume on each channel (not each source) independently using AVAudioEngine. Let's say...

I want to use this code for VoIP service. i'm using web-socket and sending with it: let data = self.toNSData(PCMBuffer: buffer) and playback:let audioBuffer = self.toPCMBuffer(data: data) in anoth...

I'm creating this simple audio recorder and editor interface for an iOS app: The audio is recorded into a float array that is used to create the waveform. After recording I copy the float data i...

Question 1 My first question concerns playback synchronization when using an AVAudioPlayerNode and an AVAudioSequencer for MIDI. Basically I'm trying to play something over MIDI, but they need to b...

I'm trying to change the input device used to listen to incoming audio. I've tried a number of solutions, but most end up with the following error when preparing and starting the audio-engine: AVA...

I want to record audio file and save it by applying some effects. Record is okay and also playing this audio with effect is okay too. The problem is when I try to save such audio offline it produce...

I'm trying to play sounds with different effects. In a previous viewController I record a sound, then in the next screen, it can be played with the effects. First time it works ok but the second ti...

I am a beginner in working with sound processing and AVAudioEngine in iOS, and I'm developing an application that captures the audio samples as a buffer and analyzes it. Furthermore, the sample rat...

Hej. I want to implement a realtime audio application with the new AVAudioEngine in Swift. Has someone experience with the new framework? How does real time applications work? My first idea was to...

I have almost no knowledge in signal-processing and currently I'm trying to implement a function in Swift that triggers an event when there is an increase in the sound pressure level (e.g. when a h...

I am handling audio playback using AVAudioEngine and AVAudioPlayerNode in my app, and I want to implement remote controls. Background audio is configured and working. Control center controls work,...

I have the following code to (re)start AVAudioEngine wired up to AVAudioEngineConfigurationChangeNotification: do { try self.engine.start() } catch { DDLogError("could not start sound engine")...

I'll start with a simple "playground" view controller class I've made that demonstrates my problem: class AudioEnginePlaygroundViewController: UIViewController { private var audioEngine: AVAudioE...

I am creating a metronome as part of a larger app and I have a few very short wav files to use as the individual sounds. I would like to use AVAudioEngine because NSTimer has significant latency pr...

I am playing a song using AVAudioPlayerNode and I am trying to control its time using a UISlider but I can't figure it out how to seek the time using AVAUdioEngine.