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Re: Updating the position of an aux send

by Bobbybaby :: Rate this Message:

Hi Daniel,

Thanks for the reply, You are exactly right regarding the wet source. I am playing back only the wet source having filtered the dry signal to zero and have not updated the reverb and reflections pan vectors. I will try to solve this problem by looking at the manual under reverb pan vectors, any advice on implementing an update position for the effects??

Thanks

Robert

Daniel PEACOCK wrote:

Hi Robert,

There shouldn't be any reason why you can't position a mono OpenAL Source
just because it has an Aux Send to a Reverb effect. The Reverb effect
itself will not be positioned (unless you use the Reverb and Reflections
Pan vectors) but the Source will be.

Could it be that you are only actually hearing the wet (reverb) signal?
What value are you setting for AL_REFERENCE_DISTANCE on the Source? Can
you set it to 100 and see if that makes a difference?

Dan
Creative Labs (UK) Ltd.

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Robert Smyth
<macgabhr@tcd.ie>
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Subject
[Openal] Updating the position of
07/03/2009 04:49 an aux send
PM

Hello,

I am trying to update the position of an aux send, reverbed source, so as
the source will start playing to the left of the listener and pass by to
the right. This is quite simple to implement in openal for a dry source.
However when i try to simulate the same procedure but with a reverbed
effect the position does not update and the source is simply played out
with a reverb effect but no positional change.I am using microsoft visual
9.0 through windows. My sound device that is being used is SB X-Fi Audio
[cceo]. Is this possible to implement. Just to verify my reverbed source
works fine for a static position and i update the sources position with

alSourcePlay (source);
for (float x = -50;x < 50; x++)
0.5;
%f\n",x,y,z);
alSource3f(source,AL_VELOCITY,0,0,-14);
alutSleep(0.07);

This is the snippet of code after which the effect has been declared.

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