2014/10/15 下午 10:10:10

iphone Programming Glossary: ima4

http://stackoverflow.com/questions/1761460/supported-audio-file-formats-in-iphone

Adaptive Multi Rate a format for speech ALAC Apple Lossless iLBC internet Low Bitrate Codec another format for speech IMA4 IMA ADPCM linear PCM uncompressed 繕 law and a law MP3 MPEG 1 audio layer 3 The audio recording formats supported in iPhone..

Sound on simulator but not device

http://stackoverflow.com/questions/2014578/sound-on-simulator-but-not-device

Sound files that you play using this function must be No longer than 30 seconds in duration In linear PCM or IMA4 IMA ADPCM format Packaged in a .caf .aif or .wav file From Apple docs http developer.apple.com library ios #documentation..

Proper AVAudioRecorder Settings for Recording Voice?

http://stackoverflow.com/questions/2149280/proper-avaudiorecorder-settings-for-recording-voice

purposes recorderSettingsDict NSDictionary alloc initWithObjectsAndKeys NSNumber numberWithInt kAudioFormatAppleIMA4 AVFormatIDKey NSNumber numberWithInt 44100.0 AVSampleRateKey NSNumber numberWithInt 2 AVNumberOfChannelsKey NSNumber.. Your choice will be determined by what you want to do with the audio after you record it. Your current choice is IMA4. Maybe you'll want a different format but IMA4 is a good choice for the iPhone. It's a fast encoding scheme so it won't.. want to do with the audio after you record it. Your current choice is IMA4. Maybe you'll want a different format but IMA4 is a good choice for the iPhone. It's a fast encoding scheme so it won't be too taxing for the limited iPhone processor..

How can I record AMR audio format on the iPhone?

http://stackoverflow.com/questions/276644/how-can-i-record-amr-audio-format-on-the-iphone

Apple Lossless ~ kAudioFormatAppleLossless iLBC internet Low Bitrate Codec for speech ~ kAudioFormatiLBC IMA ADPCM IMA4 ~ kAudioFormatAppleIMA4 linear PCM ~ kAudioFormatLinearPCM 繕 law ~ kAudioFormatULaw a law ~ kAudioFormatALaw You may try.. iLBC internet Low Bitrate Codec for speech ~ kAudioFormatiLBC IMA ADPCM IMA4 ~ kAudioFormatAppleIMA4 linear PCM ~ kAudioFormatLinearPCM 繕 law ~ kAudioFormatULaw a law ~ kAudioFormatALaw You may try one of these formats or..

2 mp3 sounds at the same time in iphone?

http://stackoverflow.com/questions/5026105/2-mp3-sounds-at-the-same-time-in-iphone

playback of multiple sounds of these formats will require CPU resources for decoding. Linear PCM and IMA ADPCM IMA4 audio You can play multiple linear PCM or IMA4 format sounds simultaneously without CPU resource concerns. In terms of playing.. will require CPU resources for decoding. Linear PCM and IMA ADPCM IMA4 audio You can play multiple linear PCM or IMA4 format sounds simultaneously without CPU resource concerns. In terms of playing multiple sounds at once that's easy just.. NSURL fileURLWithPath path error NULL objAudio.delegate self objAudio play To convert an MP3 into something like IMA4 which you can play more than one at once you would run the following in terminal in leopard usr bin afconvert f caff d ima4..

Choose custom sound for local notifications

http://stackoverflow.com/questions/7170475/choose-custom-sound-for-local-notifications

That should work. Make sure the sound is actually in your app 䏭 bundle is in the correct format linear PCM or IMA4 䕑retty much anywhere that explains how to convert sounds for iOS will tell you how to do that and is under 30 seconds. ..