Center Ambient array/technique; it's all new to me.

[Bibster]

Originally Posted by boojum

The trick is with the second mic. It too is an omni, and was about six feet from the keyboard, further back on the stage and about four feet up.

Chèr Boojum,

So this second mic is 6' behind the mistress? (and 4' up).
(Further back on the stage could be in any direction relative to the keyboard, You know how pesky computer/IT people are, Sandy!)

And I suppose the keyboard is one of them that have a speaker underneath facing the player?

(Just getting more details, I might need this once!).

Thanks,

Paul

[boojum]

Originally Posted by Bibster

Chèr Boojum,

So this second mic is 6' behind the mistress? (and 4' up).
(Further back on the stage could be in any direction relative to the keyboard, You know how pesky computer/IT people are, Sandy!)

And I suppose the keyboard is one of them that have a speaker underneath facing the player?

(Just getting more details, I might need this once!).

Thanks,

Paul

Paul, In reviewing Christian's instructions the trick is to not be too close to the C mic as that will pull the image, he says. I offered a meter and then he cautioned me about being too close with the possible problem outlined above. I do not believe that the distance is really critical and a couple of meters is probably a safe distance almost always. Play with it. I had originally planned on using the DS 60 and an omni but opted for a pair of 4006 TL's at the last moment. Christian does not think the mics are critical. It is just that there be a second fake figure 8 channel and that it be a safe distance from the center channel mic. Too close and, as IBM says in these matters, "Results are unpredictable." I bet you have seen that in a manual once or twice.

Actual positions: keyboard stage right facing stage left. C mic under keyboard taped to bottom in front of speaker which faces the floor. Second mic, A mic, in front of the keyboard ~0.25 meters and two meters to the left of the keyboard. Ça va?

It is a great trick to know and Norsehorse was a saint to share it.

Cheers

[David Rick]

This is an "acoustic version" of the pseudo-stereo network known to many old-timers. In this case, the delay line consists of the distance between the close and far microphones.

If you're not familiar with pseudo-stereo networks, here's a nice summary -- ignore the code and look at the block diagrams!

An interesting distinction from the "electronic" version is that any hall ambiance captured by the far mic is out of phase in L/R and will be steered to the rear in certain surround decoders.

David L. Rick
Seventh String Recording

[boojum]

David, thanks for the help. Count on you to have the technical underpinning to all of this. Norsehorse will be posting a more thorough presentation than what I did. He has the background, too, to understand the technical part of this.

As for the code, I haven't read code since '99 and am not eager to start again. Those "C like" languages never interested me much. Either high level (COBOL) or low level (Assembler) did it for me and my Assembler was neglected and used only for ugly dumps. I don't need no steenking code.

[Tommy-boy]

Neat trick. Definitely sounds better than just mono.

[cantrebolls]

yeah,Norsehorse will be posting a more thorough presentation than what I did. He has the background, thank you