2014/10/15 下午 10:11:25

iphone Programming Glossary: mixing

iPhone Accelerate Framework FFT vs Matlab FFT

http://stackoverflow.com/questions/10820488/iphone-accelerate-framework-fft-vs-matlab-fft

are 1 based. So you need to change your loop from for int i 1 i 16 i to for int i 0 i 16 i A second big problem you're mixing single precision float and double precision double routines. Your data is double so you should be using vDSP_ctozD not vDSP_ctoz..

ARM vs Thumb performance on iPhone 3GS, non floating point code

http://stackoverflow.com/questions/1198176/arm-vs-thumb-performance-on-iphone-3gs-non-floating-point-code

simply switch compilers you could run several times faster gcc falls into that category Or using the same compiler and mixing up the optimization options. Either way you can shadow the arm thumb difference by being smart about using the tools. You..

how can we play audio and video together in ipod/iphone?

http://stackoverflow.com/questions/1201815/how-can-we-play-audio-and-video-together-in-ipod-iphone

verma iphone share improve this question The problem is that the default Audio Session does not allow audio mixing. In the Reference Library Working with Movie Players they say you should use a mixable category configuration for your audio..

Using the PayPal API in an iPhone application

http://stackoverflow.com/questions/1366864/using-the-paypal-api-in-an-iphone-application

me whole sample code. Thanks in advance. iphone objective c paypal share improve this question You appear to be mixing up two different ways of calling the PayPal API. You have a SOAP XML string which you don't actually use and also then call..

How do I create a mutable array of CGImageRefs?

http://stackoverflow.com/questions/1392321/how-do-i-create-a-mutable-array-of-cgimagerefs

to be loaded back into memory. Reloading the image data may incur a performance penalty. If you feel comfortable with mixing C and Objective C you can use a std vector for storing the CGImageRef. Rename your source file from .m to .mm and try this..

AVAudioPlayer turns off iPod - how to work around?

http://stackoverflow.com/questions/1507541/avaudioplayer-turns-off-ipod-how-to-work-around

sharedInstance setActive YES error nil From the docs kAudioSessionProperty_OverrideCategoryMixWithOthers Changes the mixing behavior of the kAudioSessionCategory_MediaPlayback and kAudioSessionCategory_PlayAndRecord audio session categories. Setting.. kAudioSessionCategory_PlayAndRecord audio session categories. Setting this property to TRUE any nonzero value allows mixing of iPod audio with application audio. Other aspects of these categories such as their Ring Silent switch behavior are not.. audio session category changes such as during an interruption the value of this property reverts to FALSE. To regain mixing behavior you must then re set this property. Always check to see if setting this property succeeds or fails and react appropriately..

Mixing Audio on the iPhone

http://stackoverflow.com/questions/1667603/mixing-audio-on-the-iphone

I recommend you take a look at the some of the Apple documentation and sample code relating to reading files and mixing. e.g. Mixing sample code and Audio Queue Services sample code and playing audio For a higher level API use AudioQueueServices..

How can you play music from the iPod app while still receiving remote control events in your app?

http://stackoverflow.com/questions/3191580/how-can-you-play-music-from-the-ipod-app-while-still-receiving-remote-control-ev

item in the MPMusicPlayerController or wherever then set the audio session's category to Playable do NOT enable the mixing override or you'll lose the remote events and add the appropriate keys to your info.plist file telling the OS your app wants..

Reading samples via AVAssetReader

http://stackoverflow.com/questions/4049207/reading-samples-via-avassetreader

samples via AVAssetReader How do you read samples via AVAssetReader I've found examples of duplicating or mixing using AVAssetReader but those loops are always controlled by the AVAssetWriter loop. Is it possible just to create an AVAssetReader..

Blob Data Type?

http://stackoverflow.com/questions/4363755/blob-data-type

extra I O use more power and performance will generally go to hell as you store more items in the database. If you are mixing BLOBs with small datums in the database you can quite easily end up with a pathologically fragmented database. Auto vacuuming..

Reading audio samples via AVAssetReader

http://stackoverflow.com/questions/4972677/reading-audio-samples-via-avassetreader

audio samples via AVAssetReader How do you read audio samples via AVAssetReader I've found examples of duplicating or mixing using AVAssetReader but those loops are always controlled by the AVAssetWriter loop. Is it possible just to create an AVAssetReader..

another question about recording, modifying and playing audio on iphone

http://stackoverflow.com/questions/5137853/another-question-about-recording-modifying-and-playing-audio-on-iphone

correct in the list of points above am I missing something or is there a better easier way to do it. Can I avoid mixing audio libraries and just use AVFoundation to change the pitch too Many thanks for any advice. iphone audio avfoundation..

Getting an NSInvalidArguementException error

http://stackoverflow.com/questions/5815549/getting-an-nsinvalidarguementexception-error

controller self.routineTableView endUpdates @end iphone objective c core data share improve this question You are mixing two entirely separate means of accessing the Core Data information. You should have only one context reference and one fetch..

take screen Programmatically of UIview+glview

http://stackoverflow.com/questions/6197137/take-screen-programmatically-of-uiviewglview

share improve this question It seems like it's pretty tricky to get a screenshot nowadays especially when you're mixing the UIKit and OpenGL ES there used to be UIGetScreenImage but Apple made it private again and is rejecting apps that use..

Avfoundation - Play and record video (along with audio and preview) simultaneously

http://stackoverflow.com/questions/6991452/avfoundation-play-and-record-video-along-with-audio-and-preview-simultaneous

error error NSLog @ AVAudioSession setCategory failed @ error localizedDescription Set audio session property allow mixing to true so audio can be recorded while it is playing UInt32 allowMixing true OSStatus status AudioSessionSetProperty kAudioSessionProperty_OverrideCategoryMixWithOthers..

Encoding spaces in UITextView / UITextField to URL format

http://stackoverflow.com/questions/917409/encoding-spaces-in-uitextview-uitextfield-to-url-format

use NSLog @ @ encodedString instead. That will make it print as expected. Edit A third issue with your code is you're mixing autoreleased and owned objects then releasing them all at the end. Go look at the 3 objects you create and which you subsequently..

iPhone : Difference between nil vs Nil and true vs TRUE

http://stackoverflow.com/questions/9578748/iphone-difference-between-nil-vs-nil-and-true-vs-true

null object in the right circumstance for documentation purposes even though there is nothing stopping someone from mixing and matching as they go along. Link for that answer can be seen here What does 'Nil' represent in Obj C EDIT 2 Is there..