2014/10/15 下午 10:08:58

iphone Programming Glossary: fidelity

http://stackoverflow.com/questions/11173605/detecting-a-clap-in-ios

C. iphone ios algorithm core audio share improve this question You didn't mention what sort of detection fidelity you are looking for Just checking for some kind of sound pressure change may be entirely adequate for your needs honestly... that are also not likely to be a clap. Is this ok for your needs If not and you are hoping for something higher fidelity I think you'd be better of doing a spectral analysis FFT of the input signal and then looking in a much narrower frequency.. my claps have a very strong spike around 1kHz 2kHz. Possibly overkill for you needs but if you need something higher fidelity then I suspect you will not be satisfied with simply tracking a signal spike without knowing what frequency range led to..

Web based method to determine if an iPhone is connected via 3G or Wifi

http://stackoverflow.com/questions/1579795/web-based-method-to-determine-if-an-iphone-is-connected-via-3g-or-wifi

iPhone signature capture

http://stackoverflow.com/questions/1664383/iphone-signature-capture

Proper AVAudioRecorder Settings for Recording Voice?

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

settings. Your current sample rate 44.1 kHz is the same as the standard for CD audio. Unless you're after a high fidelity recording you don't need this high of a rate but you don't want to use arbitrary rates. Most audio software can only understand..