在iPhone Simulator中錄制音頻時出錯

Question

使用AVFoundation在iPhone模擬器中錄制音頻時出現以下錯誤。 我的代碼在設備上工作正常。

有任何想法嗎？ 提前致謝。

2012-09-15 17：51：39.592 MySpellings [538：3503]加載/System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAHALPlugIn.bundle/Contents/MacOS/AppleHDAHALPlugIn：dlopen（/ System / Library /擴展名/AppleHDA.kext/Contents/PlugIns/AppleHDAHALPlugIn.bundle/Contents/MacOS/AppleHDAHALPlugIn，262）：找不到符號：__ CFObjCIsCollectable引用自：/System/Library/Frameworks/Security.framework/Versions/A/Security
預期存在於：/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation在/ System / Library / Frameworks / Security中.framework / Versions / A / Security 2012-09-15 17：51：39.598 MySpellings [538：3503]加載/System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAHALPlugIn.bundle/Contents/MacOS/AppleHDAHALPlugInIn時出錯：dlopen（/System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAHALPlugIn.bundle/Contents/MacOS/AppleHDAHALPlugIn，262）：找不到符號：_ _CFObjCIsCollectable引用自：/ System / Library / Framework / Security。 /版本/ A /安全
預期存在於：/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation在/ System / Library / Frameworks / Security中.framework / Versions / A / Security 2012-09-15 17：51：39.607 MySpellings [538：3503]加載/System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAHALPlugIn.bundle/Contents/MacOS/AppleHDAHALPlugInIn時出錯：dlopen（/System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAHALPlugIn.bundle/Contents/MacOS/AppleHDAHALPlugIn，262）：找不到符號：__ CFObjCIsCollectable引用自：/System/Library/Frameworks/Security.frame /版本/ A /安全
預期存在於：/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation在/ System / Library / Frameworks / Security中.framework / Versions / A / Security 2012-09-15 17：51：39.612 MySpellings [538：3503]加載/System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAHALPlugIn.bundle/Contents/MacOS/AppleHDAHALPlugInIn時出錯：dlopen（/System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAHALPlugIn.bundle/Contents/MacOS/AppleHDAHALPlugIn，262）：找不到符號：_ _CFObjCIsCollectable引用自：/ System / Library / Framework / Security。 /版本/ A /安全
預期存在於：/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation在/ System / Library / Frameworks / Security中.framework / Versions / A / Security 2012-09-15 17：51：40.932 MySpellings [538：4907] aq @ 0xea13200：ConvertInput：AudioConverterFillComplexBuffer返回560226676，packetCount 21 2012-09-15 17：51：42.254 MySpellings [538： [c07]刷新暫掛輸入已終止-錯誤'！dat'

Answer 1

在我的情況下，顯示此錯誤是因為我使用了錯誤的比特率：

我忘了我使用Kbps，而AVEncoderBitRateKey使用bps。 因此，在將比特率乘以1000 ，錯誤消失了。

Answer 2

在錄制為m4a格式（AVFormatIDKey = kAudioFormatMPEG4AAC）時，在模擬器中錄制音頻時也遇到了問題。 沒有錄制音頻，控制台日志包含“ AudioConverterFillComplexBuffer”錯誤。

但是，錄制為.caf格式（kAudioFormatAppleIMA4）確實可行，這對於某些人而言可能是一種解決方法。

recordSettings = [NSDictionary
                  dictionaryWithObjectsAndKeys:
                  [NSNumber numberWithInt:AVAudioQualityMin],
                  AVEncoderAudioQualityKey,
                  [NSNumber numberWithInt:16],
                  AVEncoderBitRateKey,
                  [NSNumber numberWithInt: 1],
                  AVNumberOfChannelsKey,
                  [NSNumber numberWithFloat:16000.0],
                  AVSampleRateKey,
                  [NSNumber numberWithInt: kAudioFormatAppleIMA4],
                  AVFormatIDKey,
                  nil];