Wanted: Someone to design two custom DirectX plug-ins

[Ethan Winer]

Folks,

 

(Sorry for the cross-posting.)

 

I'm looking for someone who knows how to write DirectX plug-ins, and who is willing to devote a small amount of time to help advance scientific knowledge.

 

The goal is to settle for once and for all whether phase shift alone is audible, and whether having a frequency response beyond the 20 Hz. to 20 KHz. boundaries is really audible. One plug-in I'm looking for will implement an all-pass filter in DSP, and allow varying the amount of phase shift / corner frequency with a slider. This is essentially how a phaser (not flanger) stomp box works, but without the part that sums the input and output to create the dips and peaks.

 

The other plug-in will have two sliders to control at what frequencies the upper and lower extremes are rolled off. The slopes need to be sharp (or better, adjustable), and the sliders must of course be calibrated. Further, this plug-in needs to work at a 96 KHz. sample rate so the test audio source (pink noise, whatever) can have frequencies higher than 20 KHz. yet avoid the additional sharp filtering inherent in a 44.1 KHz. sample rate.

 

Both of these plug-ins will then be distributed freely so everyone can try these experiments.

 

Any takers? If you are willing to help me with this experiment, please go to my web site at www.ethanwiner.com and click the "email Ethan" button near the top of the screen.

 

Thanks!

 

--Ethan Winer

 

This message has been edited by Ethan Winer on 05-21-2001 at 02:02 PM

[hiraga]

Hi Ethan..

 

Can't do the plugs for you, but if this has something to do with what happened at *another place* I wouldn't bother! That was/is some of the must un-pro attitude I've yet to encounter on the web. What a fuckin' loser! That goes for you too Flecher..

 

I don't care if Stephen Paul is among the "top ten audio gurus" (what a pretentious moron), his attitude towards you was/is uncalled for.

 

I'm definitely off RO.

 

You do the same, if you ask me.

 

Headz up to your site and your help here. Much apriciated!!

[Ethan Winer]

hiraga,

 

 

> I don't care if Stephen Paul is among the "top ten audio gurus" (what a pretentious moron), his attitude towards you was/is uncalled for. <

 

Agreed. Thanks for the support.

 

But I'd still like to follow through and find someone willing to help me develop a meaningful scientific test of this stuff. Stephen, Fletcher, and Angelo are not the only Luddites out there. This is not rocket science http://www.musicplayer.com/ubb/smile.gif and it should be possible to settle these issues for once and for all.

 

--Ethan

[hiraga]

No probs..

 

I'm a lunnie (by your definition).. I can hear a dif between resistors, capacitors, extended frequency response and can sorta explain why.. Not a hundred percent though. I like 96k too!

 

But I won't treat you like shit, when you ask me why!

[Ethan Winer]

hiraga,

 

> I'm a lunnie (by your definition).. I can hear a dif between resistors, capacitors, extended frequency response and can sorta explain why.. Not a hundred percent though. I like 96k too! <

 

I don't dismiss anyone for their beliefs. All I ask is that assumptions be tested properly, to be sure a cause and perceived effect are really related. Personally, I cannot hear subtle differences unless I have a way to switch between them very quickly in an A/B test.

 

--Ethan

[hiraga]

My testing, ANY testing is done by the most advanced instrument in world, and the ONLY one that matters.. the human ears. My ears. I don't do A/B (it's damn hard to switch out/in a bunch of caps/resistors!)..

 

And yes, I am an engineer.