Scratching Audio - iphone

I was wondering where to start if I want to implement scratching features in my app. The user selects a sound file, and can see a LP spinning. I want the user to be able to scratch the song like a DJ.
Who can tell me where to start? Or has some example or something?
Thanks in advance!
Best Regards,
Kenneth

Check http://www.xwax.co.uk/ for some open source vinyl emulation software.

Related

Create .swf within iPhone app

Can't find anything about this anywhere (maybe there's a good reason...) - does anyone know if there are any libraries for creating simple SWFs in iOS? I'd like to be able to let the user build a simple animation, then email it off as a SWF. If it's not possible, I'll probably go down the animated gif route.
Thanks for any help!
You might use libsswf which has a c interface.
Check here.

how to play background music while recording voice?

friends
Now I'm developing iPhone Recorder App.
I can easily record my voice with sample code.
I want to record background music with my voice.
For example,When I click "Record" button,background music plays
Then I sing a song.
In this case,I should record background music with my voice.
But,If I did like that,I can't record anything.
What's wrong?
To do this,what should I do?
Please help me..
Thanks.
I'm not familiar with programming for the iPhone but I can imagine there would be a limitation to what you like to achieve IF you intend to make this work without using headphones/headset. It just might be that the OS wont let you play music and record at the same time because the recording would result in an echo because of the background music.
That said, I'm sure an experienced iPhone programmer is able to tell you exactly how this would work.
Good luck and I hope my suggestion helps you out.
friends
I solved this problem by using OpenAL.
Thanks for all your effet.

Framework/Component for iOS

I would like create a plug and play component.(i.e)I like to create a small component/Framework which can be used in many iPhone apps.For example GPS location tracking ,Chat functionalities like that.Each and everyone should be separate component which can be integrated with any apps.
Can anyone guide me with things to be done for achieve this.Any tutorials or links.
Thanks!!
check out below link
help guide to create lib
question help
Regards,
Shyam Parmar
This can also maybe help:
http://www.eosgarden.com/en/articles/xcode-static-libraries/

Recording sounds created within an iPhone app

I'm new to programming in Objective-c and the iPhone but I am working on an app to teach myself. I have been trying to figure out how to record sounds on the iPhone. Apple provides excellent documentation for recording from the microphone with AVAudioRecorder but I want to record sounds made by my app, or even just record sounds when buttons are pressed (button is pressed, certain audio gets recorded).
I have no clue how to do this and can't seem to find anything that would help me along this path, only microphone stuff.
Can anyone share ideas or code that would make this possible?
Thanks
Once you move beyond the convenience classes like AVAudioRecorder, you've got a lot of studying to do.
I would start with:
Getting Started with Audio and Video
Multimedia Programming Guide:Audio
Core Audio Overview
Audio programming is a very large and complex subject. If you want to customize, be prepared to spend some time learning it.
I've made a sample app that records sounds/audio and has a playback. Hope this helps! https://github.com/casspangell/AudioMic

How do you create a carousel menu interface like in the iPhone using WPF?

I've seen a couple of tutorials, but not with dynamic animation. Could anyone please teach me at least a rough tutorial on it?
I'm a C# developer but have been doing flash animations a long time.
Thank you so much!
Easiest way by far is to buy a 3rd party component that does this from a vendor like Infragistics.
It would be possible and interesting to do in raw WPF but it would not be a quick time to market.