AVAudioRecorder支持录制声音的格式是什么？ [英] what are the formats supported in AVAudioRecorder for recording sound?

问题描述

我在 http://developer.apple.com/library/ios/#documentation/MusicAudio/Reference/CoreAudioDataTypesRef/Reference/reference.html#//apple_ref / doc / uid / TP40004488

音频数据格式标识符
音频数据格式的标识符，用于AudioStreamBasicDescription结构。

Audio Data Format Identifiers Identifiers for audio data formats, used in the AudioStreamBasicDescription structure.

kAudioFormatLinearPCM ='lpcm'，

kAudioFormatLinearPCM = 'lpcm',

kAudioFormatAC3 ='ac-3'，

kAudioFormatAC3 = 'ac-3',

kAudioFormat60958AC3 ='cac3'，

kAudioFormat60958AC3 = 'cac3',

kAudioFormatAppleIMA4 ='ima4'，

kAudioFormatAppleIMA4 = 'ima4',

kAudioFormatMPEG4AAC ='aac '，

kAudioFormatMPEG4AAC = 'aac ',

kAudioFormatMPEG4CELP ='celp'，

kAudioFormatMPEG4CELP = 'celp',

kAudioFormatMPEG4HVXC ='hvxc'，

kAudioFormatMPEG4HVXC = 'hvxc',

kAudioFormatMPEG4TwinVQ ='twvq'，

kAudioFormatMPEG4TwinVQ = 'twvq',

kAudioFormatMACE3 ='MAC3'，

kAudioFormatMACE3 = 'MAC3',

kAudioFormatMACE6 ='MAC6'，

kAudioFormatMACE6 = 'MAC6',

kAudioFormatULaw ='ulaw'，

kAudioFormatULaw = 'ulaw',

kAudioFormatALaw ='alaw'，

kAudioFormatALaw = 'alaw',

kAudioFormatQDesign ='QDMC'，

kAudioFormatQDesign = 'QDMC',

kAudioFormatQDesign2 ='QDM2 '，

kAudioFormatQDesign2 = 'QDM2',

kAudioFormatQUALCOMM ='Qclp'，

kAudioFormatQUALCOMM = 'Qclp',

kAudioFormatMPEGLayer1 ='。mp1'，

kAudioFormatMPEGLayer1 = '.mp1',

kAudioFormatMPEGLayer2 ='。mp2'，

kAudioFormatMPEGLayer2 = '.mp2',

kAudioFormatMPEGLayer3 ='。mp3'，

kAudioFormatMPEGLayer3 = '.mp3',

kAudioFormatTimeCode ='time'，

kAudioFormatTimeCode = 'time',

kAudioFormatMIDIStream ='midi'，

kAudioFormatMIDIStream = 'midi',

kAudioFormatParameterValueStream ='apvs '，

kAudioFormatParameterValueStream = 'apvs',

kAudioF ormatAppleLossless ='alac'

kAudioFormatAppleLossless = 'alac'

kAudioFormatMPEG4AAC_HE ='aach'，

kAudioFormatMPEG4AAC_HE = 'aach',

kAudioFormatMPEG4AAC_LD ='aacl'，

kAudioFormatMPEG4AAC_LD = 'aacl',

kAudioFormatMPEG4AAC_ELD ='aace'，

kAudioFormatMPEG4AAC_ELD = 'aace',

kAudioFormatMPEG4AAC_HE_V2 ='aacp'，

kAudioFormatMPEG4AAC_HE_V2 = 'aacp',

kAudioFormatMPEG4AAC_Spatial ='aacs'，

kAudioFormatMPEG4AAC_Spatial = 'aacs',

kAudioFormatAMR ='samr'，

kAudioFormatAMR = 'samr',

kAudioFormatAudible ='AUDB '，

kAudioFormatAudible = 'AUDB',

kAudioFormatiLBC ='ilbc'，

kAudioFormatiLBC = 'ilbc',

kAudioFormatDVIIntelIMA = 0x6D730011，

kAudioFormatDVIIntelIMA = 0x6D730011,

kAudioFormatMicrosoftGSM = 0x6D730031，

kAudioFormatMicrosoftGSM = 0x6D730031,

kAudioFormatAES3 ='aes3'

kAudioFormatAES3 = 'aes3'

但是，我不这样做我们认为我们可以使用所有提到的格式（例如mp3）。

However, I dont think we can use all the formats mentioned (e.g. mp3).

任何人都可以帮我解决使用AVAudioRecorder录制声音所支持的格式吗？

Can anyone help me out with the formats that are supported for recording sound using AVAudioRecorder ?

谢谢。

推荐答案

根据苹果文档 Apple Core Audio Format Specification 1.0 它现在应该支持mp3虽然我还没有测试过，这是他们支持的当前枚举：

As per apple docs Apple Core Audio Format Specification 1.0 it should now support mp3 although I haven't tested it, this is the current enumeration they support:

enum {
    kAudioFormatLinearPCM      = 'lpcm',
    kAudioFormatAppleIMA4      = 'ima4',
    kAudioFormatMPEG4AAC       = 'aac ',
    kAudioFormatMACE3          = 'MAC3',
    kAudioFormatMACE6          = 'MAC6',
    kAudioFormatULaw           = 'ulaw',
    kAudioFormatALaw           = 'alaw',
    kAudioFormatMPEGLayer1     = '.mp1',
    kAudioFormatMPEGLayer2     = '.mp2',
    kAudioFormatMPEGLayer3     = '.mp3',
    kAudioFormatAppleLossless  = 'alac'
};

这篇关于AVAudioRecorder支持录制声音的格式是什么？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！