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Questions tagged [openal]

OpenAL (Open Audio Library) is a cross-platform audio API that allows for efficient rendering of environmental, 3D positional audio.

OpenAL (Open Audio Library) is a cross-platform audio API that allows for efficient rendering of environmental, 3D positional audio.

OpenAL utilizes an extension mechanism in order to allow vendors to provide additional functionality.

It is often in games through extensions such as LWGJL.

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How to sync code callbacks to playback time of an audio track?

I have a presentation audio track playing in an iPhone app for which I want to show specific interactive "slides" at specific playback times. The reason why I cannot use video is that the slides are interactive (not just photos). A developer…
Proud Member
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Time Stretching using OpenAL

Does OpenAL support Time stretching of audio without changing pitch? If not how can one achieve it.
user1399186
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Fading out sounds when using finch in iOS

I am using the Finch openAL wrapper in iOS and would like to fade out my FISound's. Suppose I have a 30 second sound, I would like to be able to fade out the sound over 5 seconds after 15 seconds for example. I'd like to avoid dropping down to…
Andrew Lauer Barinov
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Reverb with OpenAL in iOS

Since iOS 5 we have support for reverb effects in OpenAL but I couldn't find any good example for using this functionality. I found only some links to ObjectAL source code but it is too complicated to understand the usage of reverb effects. So, how…
Steel Apple
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OGG Vorbis: Defined, but not used - how to suppress?

I have a group project at school (3D FPS game) and I program audio using OpenAL and OGG Vorbis in C++. Our compiler is set to warn us about defined, but not used variables, which turns out to be a problem with Vorbis. When I compile our application,…
Filip Vondrášek
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Why is my app crashing when I try to play a sound using the Finch library for iPhone SDK?

I followed the instructions in the read me file exactly, but for some reason, in my app, every time I hit the UIButton corresponding to the code to play the sound "[soundA play]; the app just crashes without any detailed error description except for…
Chris
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Objective C: auto play after recording with specific time

Good day, can you help me with my project in making a recording project, which is after you recorded it using AVAudioRecorder it will automatically play in a certain time can you give me or site me a link regarding with my question..i am badly…
Gerald Stojakovic
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Objective C: OpenAL using .CAF

Good day! i have a question regarding .caf files in openAL path...is it possible to use .caf file in openAL? because when i use a current .wav file in the filepath it actually run.. but when i use .caf.. it doesnt have errors but when i run it, it…
Gerald Stojakovic
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Linking to "libOpenSLES" with MonoDroid

Hi im doing a simple linking test for getting OpenAL/OpenSLES to work on MonoDroid in C#. What is the correct lib name I should be linking to, because linking to "libOpenSLES" is saying it cant find the method "alutInit"?? NOTE: I'm testing this on…
zezba9000
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How to Convert Buffer data to NSdata

In my app I am using OpenAl to trim the audio song, now how to convert alSourcePlay(source); to NSData? Can any one help me please?
naga
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iPhone SDK - OpenAL, 'Beat Box' style sound engine

How would one go about creating a 'beat box' style sound engine, where a series of sounds can be queued up ahead of time and during playback. These sounds need to play back without any gaps or hiccups though. I've looked into OpenAL and have…
David Higgins
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OpenAL alSourceUnqueueBuffers & alSourceUnqueueBuffers

everyone , I have a problem about the API-- alSourceUnqueueBuffers when I use the OpenAL Libaray. My problem as follows: 1.I play a pcm-music though streaming mechanism. 2.The application can queue up one or multiple buffer names using…
Henry
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Creates some audio process like Voice Changer or framework of iZotope

I'm working on audio filter job on iOS. It's quiet tough. I want to make 'Object' includes AudioSession that make audio DSP using exist audio. So, I made some DSP filters on my note but, I cannot know how can I bring the existing audio file to the…
J.K Jeon
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How to build OpenAL-Soft and set up it in Qt Creator for Android

I didn't find a step by step guide how to build OpenAL-Soft to use it from Qt for Android. I tried to make it by copying OpenAL-Soft sources into a project. I copied the OpenAL-Soft sources into my example. You can download my example here from…
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How to convert XAudio2 I3DL2 Model to OpenAL effects?

I am currently implementing sound in a test program. I am using OpenAL by default because its working an all target platforms I have. On Windows I decided to go with XAudio2. For reverb effects in XAudio2 you provide a I3DL2 model an convert it…
MarkaRagnos0815
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