bugnu irashinejimas???

Kaip isivaizduoju, dinaminius shurus naudoji soliniui ir katilui, o placiajuoscius kondikus - kaip overhead/room mic'us. Turetu praverst:

Attack Time In Drums & Multiple Microphone Blurring
The attack of a drum hit is established in the first 2-3 milliseconds of the generated sound wave. This means that when a drum is picked up by multiple microphones that are spaced apart by more than 2 milliseconds, the attack becomes "blurred" (less definite). Thus leakage of the snare into cymbal and tom microphones more than 2 feet away will lessen the snare attack. This same problem would occur for all of the drum kit instruments.

Putting The Drums In Time
Sound travels at 1130 feet per second. Thus it takes about 9/10 of a millisecond for sound to travel a one foot distance. Recording engineers conveniently round this off to the timing formula of 1 ms = 1 foot.

When you put all of the microphones in time with each other, the attack of the drums is astoundingly better. Ben Blau, an RID instructor, first introduced this idea some 8 years ago when he was managing one of our recording studios. I had been using delay to compensate for spaced microphones on guitars but had never tried it on the relatively small time differences of the microphones on a drum kit. I expected somewhat of a difference when Ben explained his idea to me but I was unprepared for how much of a difference it made.
To put all of the microphones in time with each other you select a "focal point" say 6 feet from the floor over the drums. This could be a place that you used X-Y microphones as overheads, but you use this focal point even if you don't have overhead microphones there. You measure (or estimate) the distance of each microphone to the focal point and then delay each microphone by that amount using the formula of 1 ms = 1 foot.

APPROXIMATE DELAY TIMES TO FOCAL POINT

FOOT DRUM
5.0 milliseconds

SNARE DRUM
4.0 Milliseconds

LOWER TOMS
4.0 Milliseconds

UPPER TOMS
3.5 Milliseconds

HIGH HAT
3.5 Milliseconds

OH CYMBALS 2.0 Milliseconds