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Posted by Rick Merrill on 06/02/06 18:27
blackburst@aol.com wrote:
> I compsed a long reply to this yesterday, and when I went to send it,
> Google required me to sign-in again, and the post was lost. I hate
> that.
>
> Rick Merrill wrote:
>
>>blackburst@aol.com wrote:
>>
>>>I just think that ther's NO substitute for closer miking, if at all
>>>possible. I've done a demo for TV students, recording the same
>>>materials with a closeup mic on one track, and the shotgun on the
>>>other. When I isolate them, they all go "wow" and pick the closeup as
>>>much better sounding.
>>>
>>
>>Absolutely. Interesting technique you have there: maybe you can tell me
>>if you turn off AGC/ALC/auto-sound when doing that?
>
>
> It was done as a segment of a college course on TV production. I used a
> Tascam 2488 HD multitrack. The objectives were to show the students:
>
> 1) How to distinguish between direct sound and leakage ("signal to
> noise", in a sense). For this, I used a person speaking, and I set up
> six Behringer XM8500 mics, starting about 6 inches from the speaker's
> mouth, with the other mics at 2 foot increments but aimed at the
> speaker. (one at 2 ft, next at 4 ft, next at 6ft, and so on.) The
> students recognized that ACAP - as close as possible - sounds better.
> (The exceptions are when close miking is impossible, or when the mic
> becomes overloaded.) In a related exercise, I used a caller on a phone
> hybrid to illustrate the difference between the DIRECT feed from the
> hybrid vs the foldback leakage into the host/guest mics.
>
> 2) How to hear phase cancellation and comb filtering in a multiple open
> mic situation, using a similar setup. The objective here was to
> position the mics properly, and open and close them only as needed.
>
> 3) How to distiguish between different mics. For this, I A/Bed between
> various mics: omni vs uni, dynamic vs condenser, closeup (condenser) vs
> distant (shotgun), lavalier vs stick, etc. Again, lots of "wow" and
> "a-ha" from the students.
>
> We recorded each exercise, so that in playback, we could isolate
> tracks. On the closeup vs distant (using distances ranging from 20 ft
> down to 3 ft), even seasoned audio people were amazed at the difference
> in the sound of the tracks.
>
> I don't mean to knock shotguns: In a very limited number of
> circumstances, they are the best choice; but too often, they seduce the
> user into making the lazy choice. ACAP is better at least 99% of the
> time.
>
> Hey, you're a cable access guy, aren't you?
>
If fooling with cable access were like fooling with guns I'd have no
toes left!-)
I confess I'm enamored of the "zoom mic" that reads the camera zoom
setting to adjust it's own setting. The perfect application IMHO is
audience interaction of a medium sized room where all the participants
think, "ve don't need no stinking mic".
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