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My app listens for verbal commands "Roll" & "Skip". It was working well until I used it while listening to a podcast in another app. I am getting a crash with the error: Thread 1: "required condition is false: IsFormatSampleRateAndChannelCountValid(format)" . It crashes when I am playing audio from the apps Snipd (a podcast app) or the Apple Podcast app. When I am playing audio from Youtube or the Apple Music it does not crash. This is the code for when I start listening for the commands: // MARK: - Speech Recognition func startListening() { do { try configureAudioSession() createRecognitionRequest() try prepareAudioEngine() } catch { print("Audio Engine error: \(error.localizedDescription)") } } private func configureAudioSession() throws { let audioSession = AVAudioSession.sharedInstance() try audioSession.setCategory(.playAndRecord, mode: .measurement, options: [.interruptSpokenAudioAndMixWithOthers, .duckOthers]) try audioSession.setActive(true, options: .notifyOthersOnDeactivation) } private func createRecognitionRequest() { recognitionRequest = SFSpeechAudioBufferRecognitionRequest() guard let recognitionRequest = recognitionRequest else { return } recognitionRequest.shouldReportPartialResults = true recognitionTask = speechRecognizer?.recognitionTask(with: recognitionRequest, resultHandler: handleRecognitionResult) } private func prepareAudioEngine() throws { let inputNode = audioEngine.inputNode inputNode.removeTap(onBus: 0) let inputFormat = inputNode.inputFormat(forBus: 0) inputNode.installTap(onBus: 0, bufferSize: 1024, format: inputFormat) { [weak self] (buffer, _) in self?.recognitionRequest?.append(buffer) } audioEngine.prepare() try audioEngine.start() isActuallyListening = true } Thanks