Comments on: openAL sound on the iPhone

By: iPhone Programming Part 4 : Audio | Anima Entertainment GmbH

iPhone Programming Part 4 : Audio | Anima Entertainment GmbH — Mon, 30 Aug 2010 10:00:49 +0000

[...] basics you should know about. Hopefully with success. First I have to say this article is based on this [...]

By: links for 2010-07-08 « andrewskinner.name

links for 2010-07-08 « andrewskinner.name — Fri, 09 Jul 2010 01:02:44 +0000

[...] openAL sound on the iPhone | benbritten.com Pow,pow,pow – zap, zap, zap!!! (tags: openal tutorial objective-c sound development audio) [...]

By: iPhone Programming Part 4 : Constructor / Destructor | Anima Entertainment GmbH

Tue, 29 Jun 2010 14:27:38 +0000

[...] I have to say that this article is based one this [...]

By: Tweets that mention openAL sound on the iPhone | benbritten.com -- Topsy.com

Wed, 19 May 2010 21:02:41 +0000

[...] This post was mentioned on Twitter by iphone god. iphone god said: openAL sound on the iPhone | benbritten.com: http://bit.ly/9c4IuQ [...]

By: coders» Blog Archive » iPhone Programming Part 5 : Audio

coders» Blog Archive » iPhone Programming Part 5 : Audio — Wed, 19 May 2010 07:35:52 +0000

[...] I have to say that this article is based one this [...]

By: Ben

Ben — Tue, 04 May 2010 02:19:39 +0000

Hey Hans,

I finally got it done (streaming tutorial): you can check it out here:

http://benbritten.com/2010/05/04/streaming-in-openal/

Cheers!
-Ben

By: hanstutschku

hanstutschku — Sun, 02 May 2010 02:25:11 +0000

Hi Ben, I learned a lot from your tutorial.
I’m trying now to use OpenAL to play back long soundfiles – never more than 2 at a time. As I need pitch control I can’t use the AVAudioPlayer and I can’t either load the entire files into memory.
I searched the web without success for an example for audio streaming in OpenAL. You mentioned that you use streaming for longer files. Came you accress some good tutorials for that or could you provide an example? Thanks a lot, Hans

By: pubudu

pubudu — Sun, 31 Jan 2010 18:50:58 +0000

Hi Ben,
Your tutorial was really helpful in understanding openal, thanks for that.
I’m trying to play sythesize sounds by iPhone but couldn’t figure out how. For example I wanna play a simple tone (sinusoid), so I can make an array of numbers (as samples of the sinusoid). Do you know how can I play it by iPhone.
All the tutorials talk about playing sounds, that are in sound files like .caf, .aif etc…. but none talks abt playing syhthesized sounds like that.
Any help is greatly appreciated!!!

By: bluenight

bluenight — Mon, 21 Dec 2009 02:34:19 +0000

Hi Ben,

Thank you so much.

By: Ben

Ben — Sat, 19 Dec 2009 12:00:40 +0000

Hey Bluenight,

Both the volume and the pitch only affect the sound of the played buffers, not the actual buffer data.

I am not sure if OpenAL supports data transcoding like you are talking about, but pitch shifting is not a terribly complicated algorithm, so you could probably find some methods to pitch shift your data buffers with a quick google search.

Cheers!
-B