Would like to play with this example project shown on session wwdc21-10187

Hi, My account was approved for the com.apple.developer.playable-content entitlement, but now it's deprecated and I want to switch to the new one com.apple.developer.carplay-audio. I have some problems making the transition, do I need to submit a new request to Apple for the new entitlement? Thanks.

Hi, I want to implement ShazamKit in my project. But I have some problems. I use AVCaptureSession to take photos in my app and I'm unable to use ShazamKit. I tried to use three different ways Use an AVAudioEngine during my AVCaptureSession But I didn't obtain any result from Shazam. Try to use ShazamKit after stopping my AvCaptureSession but this causes some problems, and some crashes. Try to use the buffer of my AVCaptureSession to catch audio directly without use AVAudioEngine. This is the code that I use with AVAudioEngine: try! audioSession.setActive(true, options: .notifyOthersOnDeactivation)                 let inputNode = self.audioEngine.inputNode                 let recordingFormat = inputNode.outputFormat(forBus: 0)                                 let audioFormat = recordingFormat //AVAudioFormat(standardFormatWithSampleRate: self.audioEngine.inputNode.outputFormat(forBus: 0).sampleRate,                     //                            channels: 1)                                  inputNode.installTap(onBus: 0, bufferSize: 1024, format: audioFormat) { (buffer: AVAudioPCMBuffer, when: AVAudioTime) in                     try! self.signatureGenerator.append(buffer, at: nil)                                          self.session.matchStreamingBuffer(buffer, at: nil)                 }                              self.audioEngine.prepare()                 try! self.audioEngine.start() I can choose two ways to do this, use AVCaptureSession output to pass it to ShazamKit or use an AVAudioSession after the stop of AVCaptureSession. So I have two questions: Can I use a CMSampleBufferRef from AVCaptureSession buffer in a SHSession? And if the answer is yes how? How can I prevent this error if I want to use an AVAudioSession after I stopped my AVCaptureSession? [aurioc]            AURemoteIO.cpp:1117  failed: -10851 (enable 1, outf< 2 ch,      0 Hz, Float32, deinterleaved> inf< 2 ch,      0 Hz, Float32, deinterleaved>) [avae]            AVAEInternal.h:76    required condition is false: [AVAEGraphNode.mm:834:CreateRecordingTap: (IsFormatSampleRateAndChannelCountValid(format))] *** Terminating app due to uncaught exception 'com.apple.coreaudio.avfaudio', reason: 'required condition is false: IsFormatSampleRateAndChannelCountValid(format)' Thanks

Hi, I had my app developed and have found that when the iPhone locks screensaver it stops playing the track and doesn't recognise it has a sound track playing. Is there something my developer needs to put in or is it an IOS security issues? Love any recommendations please.

Hi, I'm attempting to call audioComponentFindNext() from an iOS application (built with juce) to get a list of all available plugins. I've got an issue whereby the function is only returning the generic system plugins and missing any the 3rd party installed plugins. This issue is currently found when called from within another auv3 plugin though I have also seen it from within a normal iOS app. (Ran on iPad air 4), it the moment is working fine from an iOS app. I've tried setting microphone access and inter-app audio capabilities as I saw it suggested on similar forum posts though it has not solved my problem. Any advice would be very appreciated Thanks

Hello, I made a post earlier comparing the performance between the latest release of tensorflow with apple silicon support: https://developer.apple.com/forums/thread/687654. In my testing the GitHub alpha greatly outperforms the current release. I provided an installation guide for the GitHub alpha in that post. sounddevice: https://pypi.org/project/sounddevice/ My goal is to get the python library sounddevice working in either of the virtual environments created by the two different tensorflow releases for apple silicon. Preferably the GitHub alpha, since its much faster. The two releases being the current release https://developer.apple.com/metal/tensorflow-plugin/ using a conda virtual environment, or the GitHub alpha release which can be setup using the installer script. GitHub alpha venv errors Installation: First I make an environment following the installation guide I provided in my first post (linked above). I activate the virtual environment I install sounddevice using the following command: $ python3 -m pip install sounddevice When I try to import sounddevice I get the following errors: Traceback (most recent call last): File "/Users/sadedwar/code/fun/ga-synth/venv/lib/python3.8/site-packages/sounddevice.py", line 72, in <module> _lib = _ffi.dlopen(_libname) OSError: cannot load library '/usr/local/lib/libportaudio.dylib': dlopen(/usr/local/lib/libportaudio.dylib, 2): no suitable image found. Did find: /usr/local/lib/libportaudio.dylib: mach-o, but wrong architecture /usr/local/Cellar/portaudio/19.7.0/lib/libportaudio.2.dylib: mach-o, but wrong architecture tensorflow-metal PluggableDevice errors Installation: exactly as described in: https://developer.apple.com/metal/tensorflow-plugin/ I install python-sounddevice from: https://anaconda.org/conda-forge/python-sounddevice importing works fine When I try to run the following code: myrecording = sd.rec(int(duration * samplerate), samplerate=samplerate, channels=channels) it yields this error: Traceback (most recent call last): File "/Users/sadedwar/code/fun/ga-synth/makeDatasets.py", line 41, in <module> render_dataset(make_simple_dataset(100)) File "/Users/sadedwar/code/fun/ga-synth/makeDatasets.py", line 37, in render_dataset data, samplerate = audioRecorder.play_and_rec() File "/Users/sadedwar/code/fun/ga-synth/audioRecorder.py", line 29, in play_and_rec recording, samplerate = rec_mono_16bit_8kHz(duration=0.1) File "/Users/sadedwar/code/fun/ga-synth/audioRecorder.py", line 17, in rec_mono_16bit_8kHz myrecording = sd.rec(int(duration * samplerate), samplerate=samplerate, channels=channels) File "/Users/sadedwar/miniforge3/envs/machinelearning/lib/python3.9/site-packages/sounddevice.py", line 274, in rec ctx.start_stream(InputStream, samplerate, ctx.input_channels, File "/Users/sadedwar/miniforge3/envs/machinelearning/lib/python3.9/site-packages/sounddevice.py", line 2573, in start_stream self.stream = StreamClass(samplerate=samplerate, File "/Users/sadedwar/miniforge3/envs/machinelearning/lib/python3.9/site-packages/sounddevice.py", line 1415, in __init__ _StreamBase.__init__(self, kind='input', wrap_callback='array', File "/Users/sadedwar/miniforge3/envs/machinelearning/lib/python3.9/site-packages/sounddevice.py", line 836, in __init__ def callback_ptr(iptr, optr, frames, time, status, _): MemoryError: Cannot allocate write+execute memory for ffi.callback(). You might be running on a system that prevents this. For more information, see https://cffi.readthedocs.io/en/latest/using.html#callbacks Any help is appreciated, thank you.

Hey guys, I'm working on an App that plays Apple Music tracks. Therefore I'm using MPMusicPlayerController.applicationMusicPlayer everything is working great so far - including setting the musicPlayer.currentPlaybackRate which is kind of important for my use case. Now I'm trying to setup of the lock screen-controls for my App correctly, especially because using the default ones will reset the currentPlaybackRate to 1.0 after play/pausing. Also I have to sync my internal playState if "pause" is pressed in the lock screen. Here is what I wrote: class AudioPlayerViewModel { ... private let commandCenter = MPRemoteCommandCenter.shared()     init(album: LibraryAlbum? = nil) { ...         self.setupRemoteCommandCenter()     } ... func setupRemoteCommandCenter() {         debugPrint("setupRemoteCommandCenter()")                  commandCenter.previousTrackCommand.isEnabled = false         commandCenter.previousTrackCommand.addTarget { event in             debugPrint("remote previousTrackCommand")             self.previousTrack()             return .success         }         commandCenter.nextTrackCommand.isEnabled = false         commandCenter.nextTrackCommand.addTarget { event in             debugPrint("remote nextTrackCommand")             self.nextTrack()             return .success         }         commandCenter.pauseCommand.isEnabled = false         commandCenter.pauseCommand.addTarget { event in             debugPrint("remote pauseCommand")             self.isPlaying = false             self.pausePlayback()             return .success         }         commandCenter.playCommand.isEnabled = false         commandCenter.playCommand.addTarget { (event) -> MPRemoteCommandHandlerStatus in             debugPrint("remote playCommand")             self.isPlaying = true             self.continuePlayback()             return .success         }     } } I call setupRemoteCommandCenter() once(!) before playing anything in MPMusicPlayerController.applicationMusicPlayer My problem is these handlers never get called. The lock screen-controls always remain the default ones. My code has no effect, but also throws no errors. I find several posts about this. The Apple Documentation (https://developer.apple.com/documentation/mediaplayer/handling_external_player_events_notifications) states the this should be possible. What am I doing wrong? Any help would be greatly appreciated.

where and how would I start to build a dj app?

Hi, How can I pause/play the now playing song with MedaiRemote framework Thanks!

I use AVSpeechSynthesizer to pronounce some text in German. Sometimes it works just fine and sometimes it doesn't for some unknown to me reason (there is no error, because the speak() method doesn't throw and the only thing I am able to observe is the following message logged in the console): _BeginSpeaking: couldn't begin playback I tried to find some API in the AVSpeechSynthesizerDelegate to register a callback when error occurs, but I have found none. The closest match was this (but it appears to be only available for macOS, not iOS): https://developer.apple.com/documentation/appkit/nsspeechsynthesizerdelegate/1448407-speechsynthesizer?changes=_10 Below you can find how I initialize and use the speech synthesizer in my app: class Speaker: NSObject, AVSpeechSynthesizerDelegate {   class func sharedInstance() -> Speaker {     struct Singleton {       static var sharedInstance = Speaker()     }     return Singleton.sharedInstance   }       let audioSession = AVAudioSession.sharedInstance()   let synth = AVSpeechSynthesizer()       override init() {     super.init()     synth.delegate = self   }       func initializeAudioSession() {     do {       try audioSession.setCategory(.playback, mode: .spokenAudio, options: .duckOthers)       try audioSession.setActive(true, options: .notifyOthersOnDeactivation)     } catch {             }   }       func speak(text: String, language: String = "de-DE") { guard !self.synth.isSpeaking else { return }     let utterance = AVSpeechUtterance(string: text)     let voice = AVSpeechSynthesisVoice.speechVoices().filter { $0.language == language }.first!           utterance.voice = voice     self.synth.speak(utterance)   } } The audio session initialization is ran during app started just once. Afterwards, speech is synthesized by running the following code: Speaker.sharedInstance.speak(text: "Lederhosen") The problem is that I have no way of knowing if the speech synthesis succeeded—the UI is showing "speaking" state, but nothing is actually being spoken.

I'm using the MacBook Pro (2020 series). https://developer.dolby.com/platforms/apple/macos/overview/ The above page says that Dolby Atmos is supported for built-in speakers, but I don't know how to play. I can't found the settings for playing with Dolby Atmos on MacBook Pro, so how can I play with Dolby Atmos in Mac OS application written by mysellf ? Execution environment: MacBook Pro (2020) Big Sur 11.5.2 CPU: Apple M1 Xcode: 12.5.1

Hey, I am trying to figure out how can I display currently playing sources of Audio on my Xcode Project. In the new Big Sur update I believe this was possible due to the Mac Catalyst. How can I do this on the Mac? New to this, can someone guide please.

Good day community, More than half a year we faced the crash with following callstack: Crashed: AVAudioSession Notify Thread EXC_BAD_ACCESS KERN_INVALID_ADDRESS 0x0000000000000000 0. libEmbeddedSystemAUs.dylib InterruptionListener(void*, unsigned int, unsigned int, void const*) 1. libEmbeddedSystemAUs.dylib InterruptionListener(void*, unsigned int, unsigned int, void const*) arrow_right 2. AudioToolbox AudioSessionPropertyListeners::CallPropertyListeners(unsigned int, unsigned int, void const*) + 596 3. AudioToolbox HandleAudioSessionCFTypePropertyChangedMessage(unsigned int, unsigned int, void*, unsigned int) + 1144 4. AudioToolbox ProcessDeferredMessage(unsigned int, __CFData const*, unsigned int, unsigned int) + 2452 5. AudioToolbox ASCallbackReceiver_AudioSessionPingMessage + 632 6. AudioToolbox _XAudioSessionPingMessage + 44 7. libAudioToolboxUtility.dylib mshMIGPerform + 264 8. CoreFoundation __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 56 9. CoreFoundation __CFRunLoopDoSource1 + 444 10. CoreFoundation __CFRunLoopRun + 1888 11. CoreFoundation CFRunLoopRunSpecific + 424 12. AVFAudio GenericRunLoopThread::Entry(void*) + 156 13. AVFAudio CAPThread::Entry(CAPThread*) + 204 14. libsystem_pthread.dylib _pthread_start + 156 15. libsystem_pthread.dylib thread_start + 8 We use Wwise audio framework as audio playback API. We did reported the problem to Audiokinetic's support, but it seems that the problem is not there. Also we used FMOD sound engine earlier, but we had the same issue. At this time we have around 100 crash events every day, which makes us upset. Looks like it started from iOS 13. My main problem is that I don't communicate with AudioToolbox or AVFAudio API directly but use thirdparty sound engines instead. I believe I am not the only who faced this problem. Also there is a discussion at https://forum.unity.com/threads/ios-12-crash-audiotoolbox.719675/ The last message deserves special attention: https://zhuanlan.zhihu.com/p/370791950 where Jeffrey Zhuang made a research. This might be helpful for Apple's support team. Any help is highly appreciated. Best regards, Sergey.

(original question on stack overflow) Safari requires that a user gesture occurs before the playing of any audio. However, the user's response to getUserMedia does not appear to count as a user gesture. Or perhaps I have that wrong, maybe there is some way to trigger the playing? This question ("Why can't JavaScript .play() audio files on iPhone safari?") details the many attempts to work around the need for a user gesture, but it seems like Apple has closed most of the loopholes. For whatever reason, Safari does not consider the IOS acceptance of the camera/mic usage dialog as a user gesture and there's no way to make camera capture count as a user gesture. Is there something I'm missing, is it impossible to play an audio file after capturing the camera? Or is there someway to respond to the camera being captured with an audio file?

I have my first App ready and crash free (I think!) using AudioKit. While coding it I used the develop branch. I assume I should submit it with the main branch packages? Trouble is I updated my iPad to iOS15 (yesterday) so then had to move onto Xcode 13 and ended up have a lot of broken AudioKit code with the main branch of AudioKit. As well as a couple of issues with the develop branch - which I managed to fix. This is my first App submission so I'd like to get it right - excuse my newbie idiocy. Seems like it may have been a bad idea moving to iOS15 & Xcode 13 right now. Should I go back to 12? Main question though is what 3rd party framework branches should be used in a final App release?

something broke in iOS 15 in my app , the same code is working fine with iOS 14.8 and below versions. The actual issues is when I play audio in my app then I go to notification bar , pause the audio and next play the audio from notification bar itself , then same audio is playing twice . One audio is resuming from where I paused it before and the other one is playing the same audio from initial stage. When the issue is happening this is the logs I am getting Ignoring setPlaybackState because application does not contain entitlement com.apple.mediaremote.set-playback-state for platform 2021-09-24 21:40:06.597469+0530 BWW[2898:818107] [rr] Response: updateClientProperties<A4F2E21E-9D79-4FFA-9B49-9F85214107FD> returned with error <Error Domain=kMRMediaRemoteFrameworkErrorDomain Code=29 “Could not find the specified now playing player” UserInfo={NSLocalizedDescription=Could not find the specified now playing player}> for origin-iPhone-1280262988/client-com.iconicsolutions.xstream-2898/player-(null) in 0.0078 seconds I got stuck with this issue since 2 days , I tried all the ways but unable to get why it's only happening in iOS 15. Any help will be greatly appreciated.