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Hi there,

is it possible to play a 3d sound in software mode with only one set of stereo speakers? In most computer games i can hear sound from behind, because they sounds diverent. A sound behind the listener has less bass frequenze, it has a low pass filter.

For example when i play Ghost Recon Advanced Warfighter on a XBox 360, i can hear sound from behind, even i have only two speakers.

I try the example Virtual Voices, set the NUMCHANNELS to 1. The sound was created with "FMOD_SOFTWARE | FMOD_3D | FMOD_LOOP_NORMAL". When i listen to the sound direct in front and direct behind, the sounds are the same. The only different i can listend is, when i fade the sound from left to right.

Is there maybe a virtual sound driver, that can simulate 3d sound on headphones?

Thanks, dodo

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You’re talking about HRTF, which fmod doesnt support, you have to use FMOD_HARDWARE to do that to use the driver’s virtualization.

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Brett,

Is that "better than HRTF" technology you guys were working on still in the pipeline?

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I thought I will resurface already asked question rather than popping one of my own.

I am a little curious of how does FMOD implements directionality into its API and I am not even thinking of "better than HRTF" technology. Is it just time delay and low pass filters if the source is towards your back. Any pointers?

Happy Holidays :)
Anish

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There is no time delay or anything it is just panning. We are going to introduce a lowpass filter (same filter as occlusion_lowpass flags uses) to do a bit of dulling of the sound when it is behind you, but thats about all for now. ITD (Inter-Aural Time Delay) may come in the future.

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