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2014/10/15 ¤U¤È 10:14:12
iphone Programming Glossary: silenceMute/Silence an iOS device programmatically? http://stackoverflow.com/questions/10371312/mute-silence-an-ios-device-programmatically my app but for some reason using AVSystemController like in this answer How to disable iOS System Sounds won't let me silence the device ALL the way down.. it drops it to a volume of 1 bar but not completely silent. I know it can be done probably..
Source for a good, simple, soft modem library http://stackoverflow.com/questions/10693590/source-for-a-good-simple-soft-modem-library txTest.Tx if txTest.CountDown 1 txTest.CountDown 10 #if 0 Enable this code to test disconnecting. Finish with silence. sample 0 #endif sample rand int RAND_MAX 2 NoiseLevel 16000 RAND_MAX 2 fwrite sample 1 sizeof sample fAudio while txTest.CountDown..
-viewDidLoad not called in subclassed UIViewController http://stackoverflow.com/questions/1479576/viewdidload-not-called-in-subclassed-uiviewcontroller view However this message is not being sent to FooViewController void viewDidLoad DebugF @ Hello Total silence in gdb's output. I've seen other Cocoa tutorials that show Instances and such in IB's document view but I do not see these..
where to start with audio synthesis on iPhone http://stackoverflow.com/questions/2067267/where-to-start-with-audio-synthesis-on-iphone new BleepMachine m_bleepMachine Initialise m_bleepMachine Start Now the sound playback is running but generating silence. In your code call this when you want to change the tone generation m_bleepMachine SetWave ch frq vol where ch is the channel..
Converting audio to CAF format for playback on iPhone using OpenAL http://stackoverflow.com/questions/254080/converting-audio-to-caf-format-for-playback-on-iphone-using-openal everything works fine but when I try and use my own samplesconverted to CAF using afconvert all I get is a stony silence Does anyone have settings for afconvert that will produce a CAF file capable of being played back through OpenAL iphone..
if (self = [super init]) vs. if ((self = [super init])) http://stackoverflow.com/questions/3059232/if-self-super-init-vs-if-self-super-init in an assignment. So when self is not nil you proceed into the if block. The second form throws parens around it to silence any potential compiler warnings about assignments inside conditionals which is generally bad practice and possibly a typo...
How to get audio volume level, and volume changed notifications on iOS 4? http://stackoverflow.com/questions/3651252/how-to-get-audio-volume-level-and-volume-changed-notifications-on-ios-4 that plays a sound when pressing a button. Since that button does not make a lot of sense when the device is set to silence I want to disable it when the device's audio volume is zero. And subsequently reenable it when the volume is cranked up..
iOS multitasking for an Audio Recording application http://stackoverflow.com/questions/3848172/ios-multitasking-for-an-audio-recording-application
iOS 4 Alarm Clock App with Multitasking Support http://stackoverflow.com/questions/3897946/ios-4-alarm-clock-app-with-multitasking-support alert iOS just stops playing your sound. Now I'm thinking of using background audio playing option and play silence until the alarm time and then play the alarm sound while also showing a local notification without sound. But again how..
Prepare SMS message from an iPhone app http://stackoverflow.com/questions/396149/prepare-sms-message-from-an-iphone-app
Play sound with screen turned off / don't let iPhone go to sleep http://stackoverflow.com/questions/4267466/play-sound-with-screen-turned-off-dont-let-iphone-go-to-sleep CFBundleRef mainBundle CFBundleGetMainBundle CFURLRef silentUrl CFBundleCopyResourceURL mainBundle CFSTR silence CFSTR aiff NULL AudioServicesCreateSystemSoundID silentUrl silentSound silentTimer NSTimer scheduledTimerWithTimeInterval..
http://stackoverflow.com/questions/5890499/pcm-audio-amplitude-values bit values Would you just use a 16 to 1 quantisation mapping Why are there negative values I would think that complete silence would result in values of 0. If someone can point me to a website with information on what's being recorded I would appreciate.. ADDED 8 bit PCM audio is often an unsigned data type with the range from 0..255 with a value of 128 indicating silence . So you have to add subtract this bias as well as scale by about 256 to convert between 8 bit and 16 bit audio PCM waveforms...
Detecting iPhone mute switch in iOS 5 http://stackoverflow.com/questions/8158087/detecting-iphone-mute-switch-in-ios-5 iPhone mute switch in iOS 5 I know that Apple does not provide a way to detect the state of the iPhone mute silence switch in iOS 5 . However I have I tried a technique mentioned elsewhere to detect this by playing an audio file and measuring..
iPhone 4 is there an absolutely certain way to have a long term NSTimer fire http://stackoverflow.com/questions/8449351/iphone-4-is-there-an-absolutely-certain-way-to-have-a-long-term-nstimer-fire still a run loop running. But once I change the fire time to what I really want like 15 30 minutes there's dead silence. The run loop is gone and I don't know how to handle such a case. Nothing happens and I discover such bugs a few days later..
Keeping an app alive in background unlimited (for a Cydia app) http://stackoverflow.com/questions/8626928/keeping-an-app-alive-in-background-unlimited-for-a-cydia-app or anything of the kind that Apple doesn't like but would prefer a quick solution that doesn't stuff like playing silence in the background or swizzling. Obviously this isn't for the app store so please no lecturing So how do you run in the background..
How to programmatically silence the ringer or change the ringer tone on iOS5 http://stackoverflow.com/questions/9320725/how-to-programmatically-silence-the-ringer-or-change-the-ringer-tone-on-ios5 to programmatically silence the ringer or change the ringer tone on iOS5 Is there a way to reduce the volume of the ringer or change the ringer tone..
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