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2014/10/15 ¤U¤È 10:12:36
iphone Programming Glossary: pitchReal-time Pitch Shifting on the iPhone http://stackoverflow.com/questions/1100495/real-time-pitch-shifting-on-the-iphone I have a children's iPhone application that I am writing and I need to be able to shift the pitch of a sound sample using Core Audio. Does anyone have any example code I could look at where this is.. not the first one. However I cannot find any examples of it being done. iphone audio core audio pitch pitch tracking share improve this question you can use dirac 2 from dsp dimension for pitch shifting.. the first one. However I cannot find any examples of it being done. iphone audio core audio pitch pitch tracking share improve this question you can use dirac 2 from dsp dimension for pitch shifting on..
http://stackoverflow.com/questions/3245733/apple-gyroscope-sample-code rotMatrix 14 0 rotMatrix 3 0 rotMatrix 7 0 rotMatrix 11 0 rotMatrix 15 1 If you want the yaw pitch and roll angles then you can access them easily using attitude.yaw attitude.pitch attitude.roll share..
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.. amount of energy vibrating around that frequency. So as you can see it wouldn't be a very great pitch detector as it doesn't have nearly fine enough granularity. There is a cunning trick Extracting precise..
Store orientation to an array - and compare http://stackoverflow.com/questions/6368618/store-orientation-to-an-array-and-compare gyroscope. And after that the user should be able to replicate the same movement. I extract the pitch roll and yaw using self.motionManager startDeviceMotionUpdatesToQueue NSOperationQueue currentQueue.. withHandler ^ CMDeviceMotion motion NSError error CMAttitude attitude motion.attitude NSLog @ pitch f roll f yaw f attitude.pitch attitude.roll attitude.yaw I'm thinking that I could store these values.. motion NSError error CMAttitude attitude motion.attitude NSLog @ pitch f roll f yaw f attitude.pitch attitude.roll attitude.yaw I'm thinking that I could store these values into an array if the user is..
Real-time Pitch Shifting on the iPhone http://stackoverflow.com/questions/1100495/real-time-pitch-shifting-on-the-iphone time Pitch Shifting on the iPhone I have a children's iPhone application that I am writing and I need to be able to shift the pitch of a sound sample using Core Audio. Does anyone have any example code I could look at where this is done. There are many music and game apps in the app store that.. and game apps in the app store that do this so I know I am not the first one. However I cannot find any examples of it being done. iphone audio core audio pitch pitch tracking share improve this question you can use dirac 2 from dsp dimension for pitch shifting on the iphone. quote DIRAC2 is available as both a commercial.. game apps in the app store that do this so I know I am not the first one. However I cannot find any examples of it being done. iphone audio core audio pitch pitch tracking share improve this question you can use dirac 2 from dsp dimension for pitch shifting on the iphone. quote DIRAC2 is available as both a commercial..
http://stackoverflow.com/questions/3245733/apple-gyroscope-sample-code
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework into the same space as the send value. To give some perspective 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 the microphone.. store Bin n 2 And the magnitude of each complex number is the amount of energy vibrating around that frequency. So as you can see it wouldn't be a very great pitch detector as it doesn't have nearly fine enough granularity. There is a cunning trick Extracting precise frequencies from FFT Bins using phase change between frames..
Store orientation to an array - and compare http://stackoverflow.com/questions/6368618/store-orientation-to-an-array-and-compare user to be able to record the movement of the iPhone using the gyroscope. And after that the user should be able to replicate the same movement. I extract the pitch roll and yaw using self.motionManager startDeviceMotionUpdatesToQueue NSOperationQueue currentQueue withHandler ^ CMDeviceMotion motion NSError error CMAttitude.. startDeviceMotionUpdatesToQueue NSOperationQueue currentQueue withHandler ^ CMDeviceMotion motion NSError error CMAttitude attitude motion.attitude NSLog @ pitch f roll f yaw f attitude.pitch attitude.roll attitude.yaw I'm thinking that I could store these values into an array if the user is in record mode. And when the.. NSOperationQueue currentQueue withHandler ^ CMDeviceMotion motion NSError error CMAttitude attitude motion.attitude NSLog @ pitch f roll f yaw f attitude.pitch attitude.roll attitude.yaw I'm thinking that I could store these values into an array if the user is in record mode. And when the user tries to replicate that..
Real-time Pitch Shifting on the iPhone http://stackoverflow.com/questions/1100495/real-time-pitch-shifting-on-the-iphone Shifting on the iPhone I have a children's iPhone application that I am writing and I need to be able to shift the pitch of a sound sample using Core Audio. Does anyone have any example code I could look at where this is done. There are many.. this so I know I am not the first one. However I cannot find any examples of it being done. iphone audio core audio pitch pitch tracking share improve this question you can use dirac 2 from dsp dimension for pitch shifting on the iphone... so I know I am not the first one. However I cannot find any examples of it being done. iphone audio core audio pitch pitch tracking share improve this question you can use dirac 2 from dsp dimension for pitch shifting on the iphone. quote..
Drifting yaw angle after moving fast http://stackoverflow.com/questions/13613239/drifting-yaw-angle-after-moving-fast Motion Teapot sample to validate the effect. The Euler Angles for logging are read directly from CMAttitude NSLog @ pitch f roll f yaw f attitude.pitch 180 M_PI attitude.roll 180 M_PI attitude.yaw 180 M_PI I found this on two different iPhone.. the effect. The Euler Angles for logging are read directly from CMAttitude NSLog @ pitch f roll f yaw f attitude.pitch 180 M_PI attitude.roll 180 M_PI attitude.yaw 180 M_PI I found this on two different iPhone 5 devices manufactured at different..
How to detect sound frequency / pitch on an iPhone? http://stackoverflow.com/questions/1696773/how-to-detect-sound-frequency-pitch-on-an-iphone to detect sound frequency pitch on an iPhone I'm trying to find a way to detect sound frequency being recorded by iPhone's Microphone. I'd like to detect.. by iPhone's Microphone. I'd like to detect whether the sound frequency is going up or down. iphone audio frequency pitch share improve this question you can try to use SCListener . It's a small open source class and very easy to use EDIT..
http://stackoverflow.com/questions/3245733/apple-gyroscope-sample-code rotMatrix 10 rot.m33 rotMatrix 14 0 rotMatrix 3 0 rotMatrix 7 0 rotMatrix 11 0 rotMatrix 15 1 If you want the yaw pitch and roll angles then you can access them easily using attitude.yaw attitude.pitch attitude.roll share improve this answer..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework give some perspective 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.. complex number is the amount of energy vibrating around that frequency. So as you can see it wouldn't be a very great pitch detector as it doesn't have nearly fine enough granularity. There is a cunning trick Extracting precise frequencies from..
http://stackoverflow.com/questions/4034558/how-advantageous-is-phonegap developing for a specific client and for myself so some of lack of structure around PhoneGap makes it risky when I am pitching it to my client. I have recently started to look into Appcelerator as another cross platform tool. It has gotten decent.. documentation and support around it appear to be more polished and professional than PhoneGap this make it an easier pitch to my clients. That being said I think BOTH solutions can meet the needs of your application as you have described it above...
Compensating compass lag with the gyroscope on iPhone 4 http://stackoverflow.com/questions/4212988/compensating-compass-lag-with-the-gyroscope-on-iphone-4 Correct me if I'm wrong please but here is what I've deduced from the CMAttitude object's yaw property I don't need pitch nor roll for my purposes yaw ranges from 0 to PI when the phone is pointing downwards as indicated by deviceMotion.gravity.z..
http://stackoverflow.com/questions/4458065/iphone-voice-changer Advace iphone ipad ios4 share improve this question There are no built in iOS APIs that will do independent time pitch modification. There is open source code that implements time pitch stretching in Audacity but I don't know whether this.. no built in iOS APIs that will do independent time pitch modification. There is open source code that implements time pitch stretching in Audacity but I don't know whether this code has been ported to iOS. Same with SoundTouch . There is a T ime..
Extract iPod Library raw PCM samples and play with sound effects http://stackoverflow.com/questions/4796643/extract-ipod-library-raw-pcm-samples-and-play-with-sound-effects I am trying to extract raw PCM samples from an MP3 in the iPod Library so that I can play the song and manipulate the pitch tempo and apply sound effects such as filters . I have already gone down the route of AVPlayer and AVAudioPlayer which both..
http://stackoverflow.com/questions/5337337/could-not-load-nib-in-bundle
Store orientation to an array - and compare http://stackoverflow.com/questions/6368618/store-orientation-to-an-array-and-compare the iPhone using the gyroscope. And after that the user should be able to replicate the same movement. I extract the pitch roll and yaw using self.motionManager startDeviceMotionUpdatesToQueue NSOperationQueue currentQueue withHandler ^ CMDeviceMotion.. currentQueue withHandler ^ CMDeviceMotion motion NSError error CMAttitude attitude motion.attitude NSLog @ pitch f roll f yaw f attitude.pitch attitude.roll attitude.yaw I'm thinking that I could store these values into an array if.. ^ CMDeviceMotion motion NSError error CMAttitude attitude motion.attitude NSLog @ pitch f roll f yaw f attitude.pitch attitude.roll attitude.yaw I'm thinking that I could store these values into an array if the user is in record mode. And..
Real-time Pitch Shifting on the iPhone http://stackoverflow.com/questions/1100495/real-time-pitch-shifting-on-the-iphone time Pitch Shifting on the iPhone I have a children's iPhone application that I am writing and I need to be able to shift the pitch..
Drifting yaw angle after moving fast http://stackoverflow.com/questions/13613239/drifting-yaw-angle-after-moving-fast this is not related to Gimbal Lock EDIT After doing some more measurements it seems clear that only yaw is affected. Pitch and roll show deviations within tolerance 1° while yaw is drifting regardless of the starting position. CMDeviceMotion.gravity..
Using quaternion instead of roll, pitch and yaw to track device motion http://stackoverflow.com/questions/19239482/using-quaternion-instead-of-roll-pitch-and-yaw-to-track-device-motion myRoll radiansToDegrees atan2 2 quat.y quat.w quat.x quat.z 1 2 quat.y quat.y 2 quat.z quat.z myPitch radiansToDegrees atan2 2 quat.x quat.w quat.y quat.z 1 2 quat.x quat.x 2 quat.z quat.z myYaw radiansToDegrees 2 quat.x quat.y.. double tempRoll radiansToDegrees atan2 2 quat.y quat.w quat.x quat.z 1 2 quat.y quat.y 2 quat.z quat.z double tempPitch radiansToDegrees atan2 2 quat.x quat.w quat.y quat.z 1 2 quat.x quat.x 2 quat.z quat.z if savingGyroOrientation YES NSLog.. quat.y quat.z 1 2 quat.x quat.x 2 quat.z quat.z if savingGyroOrientation YES NSLog @ Roll f degrees tempRoll NSLog @ Pitch f degrees tempPitch NSLog @ Yaw f degrees tempYaw self.deviceStatus setDouble tempRoll forKey @ DeviceRoll self.deviceStatus..
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 C Obj C Real time algorithm to ascertain Note not Pitch from Vocal Input I want to detect not the pitch but the pitch class of a sung note. So whether it is C4 or C5 is not important.. the microphone byte stream. iphone algorithm signal processing detection pitch share improve this question Pitch is a human psycho perceptual phenomena. Peak frequency content is not the same as either pitch or pitch class. FFT and DFT..
http://stackoverflow.com/questions/4458065/iphone-voice-changer
iphone - core motion (relative rotation) http://stackoverflow.com/questions/5053793/iphone-core-motion-relative-rotation
real time pitch change in iphone using dirac [duplicate] http://stackoverflow.com/questions/6927597/real-time-pitch-change-in-iphone-using-dirac time pitch change in iphone using dirac duplicate Possible Duplicate Real time Pitch Shifting on the iPhone i have already found the answer of my question whether the real time pitch change possible in iphone.. iPhone i have already found the answer of my question whether the real time pitch change possible in iphone Real time Pitch Shifting on the iPhone but i want to ask that there is no problem with the use of dirac library in the AppStore to submit..
FFT on iPhone to ignore background noise and find lower pitches http://stackoverflow.com/questions/7181630/fft-on-iphone-to-ignore-background-noise-and-find-lower-pitches on iPhone to ignore background noise and find lower pitches I have implemented Demetri's Pitch Detector project for the iPhone and hitting up against two problems. 1 any sort of background noise sends the frequency.. I tried to tune my guitar and while the higher strings worked the tuner could not correctly discern the low E. The Pitch Detection code is located in RIOInterface.mm and goes something like this ... get the data AudioUnitRender ... convert int16.. final pitch guess. iphone signal processing fft pitch tracking accelerate framework share improve this question Pitch is not the same as peak magnitude frequency bin which is what the FFT in the Accelerate framework might give you directly..
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