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2014/10/15 ¤U¤È 10:11:23
iphone Programming Glossary: micRecord the sound and play it back with changed pitch http://stackoverflow.com/questions/10549317/record-the-sound-and-play-it-back-with-changed-pitch of a tutorial..here is the link for this link http mobileorchard.com tutorial detecting when a user blows into the mic Here we can easily understand the recording of the sound on detection of some noise. How to change the pitch of the recorded..
Detecting noise via mic while playing a song on iPhone http://stackoverflow.com/questions/11993844/detecting-noise-via-mic-while-playing-a-song-on-iphone noise via mic while playing a song on iPhone I am making an app that should play a simple audio track and let me know if there is any.. know if there is any noise in the vicinity while the track is playing. This is done by doing a live recording from the microphone while the song plays on the iPhone's loudspeaker. Any sound that is not part of the music playing is defined as noise...
Detecting Blow through iPhone MIC in Cocos and then Performing animation on an image http://stackoverflow.com/questions/12985461/detecting-blow-through-iphone-mic-in-cocos-and-then-performing-animation-on-an-i working on an app which is related to the recipes.In this app there is a section where user can blow air through the mic and can change the image as well the content on it by using animation transition CurlDown.I am able to detect the blow by.. forView image cache NO UIView commitAnimations But my problem is when i blow first time through the mic then image animated 5 to 7 times and when i blow second time then images animates 9 to 10 times i want this animation single.. of the blow your callback will make the image change. A workaround to this would be using a BOOL flag @property nonatomic BOOL blowDetected In levelTimerCallback you keep track of when a blow is detected and when it ends and you do change images..
http://stackoverflow.com/questions/16331327/how-to-mute-the-mics-audio-input-and-recognize-only-the-internal-audio-of-the-d to mute the mic's audio input and recognize only the internal audio of the device by using Auriotouch I have used auriotouch codes in my.. auriotouch codes in my app and when i record the audio it shows the audio waves . So while recording the sound the mic recognizes the audio input and then the waves would act accordingly to whatever the sound the mic receives. So far its fine... the sound the mic recognizes the audio input and then the waves would act accordingly to whatever the sound the mic receives. So far its fine. But now when I click on the play button to play the sound I just recorded the mic's input should..
http://stackoverflow.com/questions/2110009/iphone-audio-analysis an iPhone app that will potentially involve a simple analysis of audio it is receiving from the standard phone mic. Specifically I am interested in the highs and lows the mic pics up and really everything in between is irrelevant to me... analysis of audio it is receiving from the standard phone mic. Specifically I am interested in the highs and lows the mic pics up and really everything in between is irrelevant to me. Is there an app that does this already just so I can see what..
Force iPhone to output through the speaker, while recording from headphone mic http://stackoverflow.com/questions/2175082/force-iphone-to-output-through-the-speaker-while-recording-from-headphone-mic iPhone to output through the speaker while recording from headphone mic As far as I've been able to tell whenever you override an audio route in the iPhone you have to change both the output..
Determining the magnitude of a certain frequency on the iPhone http://stackoverflow.com/questions/2921674/determining-the-magnitude-of-a-certain-frequency-on-the-iphone if there is any shortcut I could use if I'm only concerned about a specific frequency. I'll be using the iPhone mic to record the audio. My guess is that I'll be using the Audio Queue Services for recording since I don't need to record..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework like as in why would we be using this function in the first place Let's say we want to perform pitch detection on microphone input and we have set it up so that some callback gets triggered every time the microphone gets in 1024 floats. Supposing.. perform pitch detection on microphone input and we have set it up so that some callback gets triggered every time the microphone gets in 1024 floats. Supposing the microphone sampling rate was 44.1kHz so that's ~44 frames sec. So our time window.. we have set it up so that some callback gets triggered every time the microphone gets in 1024 floats. Supposing the microphone sampling rate was 44.1kHz so that's ~44 frames sec. So our time window is whatever the time duration of 1024 samples..
C/C++/Obj-C Real-time algorithm to ascertain Note (not Pitch) from Vocal Input http://stackoverflow.com/questions/4062099/c-c-obj-c-real-time-algorithm-to-ascertain-note-not-pitch-from-vocal-input I may need to deal with this the octave is not important only the pitch class I am contemplating first smoothing the microphone input signal something like ySmoothedNew ySmoothedLast 0.9 newY 0.1 ySmoothedLast ySmoothedNew then calculating zeros... direction PS I will be very grateful if anyone can point me to some simple iPhone wrapper code that exposes the microphone byte stream. iphone algorithm signal processing detection pitch share improve this question Pitch is a human.. work well for human voice sources. Try AMDF ASDF autocorrelation or cepstral methods. There are also plenty of academic papers on the subject of pitch estimation. There is another long list of pitch estimation algorithms here . Edited addition..
http://stackoverflow.com/questions/6476016/how-to-plot-the-decibel-level-of-the-sound-in-the-atmosphere-using-iphones-inbu to plot the decibel level of the sound in the atmosphere using iPhone's inbuilt mic without recording the sound I want to plot the decibel level of the sound in the atmosphere that hearing through the iPhone's.. the sound I want to plot the decibel level of the sound in the atmosphere that hearing through the iPhone's inbuilt mic. I don't want to record the sound to plot. I want a sound level indicator with a graph that frequently indicates the decibel..
iPhone headphone jack - read in data? http://stackoverflow.com/questions/7192473/iphone-headphone-jack-read-in-data iphone cocoa touch audio share improve this question Yes it is possible to use the iPhone 3.5 mm 1 8 headphone mic jack as a data input as has been demonstrated by the HiJack project which also powers the input device. The key as Dominik.. Selbold has pointed out is that the incoming data must be modulated at frequencies within the passband of the iPhone microphone input. Although many have suggested that this limits the data rate in fact 19 kHz audio is a very wideband signal..
Mic input to the speaker output on an iOS device? http://stackoverflow.com/questions/8076850/mic-input-to-the-speaker-output-on-an-ios-device input to the speaker output on an iOS device How can I redirect the mic input to the speaker output on an iOS device I know it feedbacks overtime but how can I do it in code iphone ios ipad audio..
Use built-in mic if Headset is plugged in http://stackoverflow.com/questions/9029442/use-built-in-mic-if-headset-is-plugged-in built in mic if Headset is plugged in I am playing around AudioSessions in iOS and I want to route the audio input to the built in mic.. if Headset is plugged in I am playing around AudioSessions in iOS and I want to route the audio input to the built in mic of the iphone if an external headset w mic is plugged in. I'm able to detect already if headset is plugged in using the.. AudioSessions in iOS and I want to route the audio input to the built in mic of the iphone if an external headset w mic is plugged in. I'm able to detect already if headset is plugged in using the following code. CFStringRef route UInt32 propertySize..
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