Dodger
Joined: 28/11/09
Posts: 198
|
Using out of phase fallback to reduce spill into microphones
#1032458 - 06/02/13 07:45 PM
|
|
|
|
Hello
I recently recording a choir with a piano accompaniment. I am very happy
with the sound i achieved from the choir. However the piano sound was lacking quite alot.
A freind recommended that next time i record the choir. (the original
recording were only "test" recordings of a rehearsal with a "proper" recording still to be
done.) I record the piano separately before hand then play it back to the choir trough a
normal wedge monitor but with the audio inverted? By playing it back out of phase
apparently still into the choir microphones would be greatly reduced?
thoughts?
Thanks Alot
Jack
|
Jack Ruston
Joined: 21/12/05
Posts: 4066
|
Re: Using out of phase fallback to reduce spill into microphones
[Re: Dodger]
#1032465 - 06/02/13 08:49 PM
|
|
|
No. Because: 1. You will most likely find that the piano and choir need to
perform live in order to synchronise in free time. They will take timing cues from each
other. Trying to overdub in these situations is extremely difficult without doing
everything to a click. 2. The trick with flipping polarity to reduce spill
relies on having one microphone equidistant between two speakers and then flipping
polarity on one speaker. It works up to a point in a very controlled environment where you
dont have a lot of ambience flying around. What works more effectively is to record the
piano spill on its own into the choir mics, then record the choir, then flip phase on the
piano spill only track and sum that with choir track. That would cancel the spill but it's
only effective up to a point. The ambience will remain to some extent. A combination of
these two techniques can be good. But it doesn't get you around point 1. or point 3.... 3. The sound of the piano coming out of the wedge is going to be quite un-natural.
That sound, although somewhat cancelled, will still interfere with your beautiful natural
classical ambience. What don't you like about the piano?
-------------------- www.jackruston.com
|
Mike Senior
SOS Mix Specialist
Joined: 08/08/03
Posts: 1189
Loc: Cambridge, UK
|
Re: Using out of phase fallback to reduce spill into microphones
[Re: Dodger]
#1032518 - 07/02/13 06:51 AM
|
|
|
What he said.
-------------------- Mixing Secrets for the Small Studio
A complete mixing method based around the techniques of the world's most famous producers.
|
Dodger
Joined: 28/11/09
Posts: 198
|
Re: Using out of phase fallback to reduce spill into microphones
[Re: Dodger]
#1032629 - 07/02/13 05:49 PM
|
|
|
it was a electronic piano/keyboard with relatively small built in speakers and just didn't
sound great in the choir mic's. I could see if i put in trough a slightly better speaker
whether that would sound better. I can DI the Keyboard and that sounds ok. The
room wasn't ideal aswell but im going to see what i can do with that trying to find
another space. the test recording sound ok towards the end using closer mics into the
choir and a good reverb Thanks Jack
|
Jack Ruston
Joined: 21/12/05
Posts: 4066
|
Re: Using out of phase fallback to reduce spill into microphones
[Re: Dodger]
#1032631 - 07/02/13 06:20 PM
|
|
|
Oh I see your problem. I wonder if you can find a space which has a nice piano? Otherwise I think you're going to find this a problem unless you either get a really
nice quality PA (but it'll still sound fake), or give every member of the choir
headphones. J
-------------------- www.jackruston.com
|
Urthlupe
member
Joined: 20/09/02
Posts: 379
Loc: West Midlands, UK
|
Re: Using out of phase fallback to reduce spill into microphones
[Re: Dodger]
#1032801 - 09/02/13 08:48 AM
|
|
|
|
Hi Jack.
I think you already have the best solution. Where the only option is
the keyboard rather than a real piano, then minimise the keys as much as possible in your
choir array/s and DI the keyboard adding suitable ambience at mixdown.
When I
have to use foldback for choir recordings I use small wedges placed as close as possible
to the choir and directed away from the arrays. In this way the wedges need very little
volume, produce few lo freq's, and are to the greatest possible extent absorbed by the
choir rather than bouncing around the space.
Loopy
|
narcoman
active member
Joined: 14/08/01
Posts: 8469
|
Re: Using out of phase fallback to reduce spill into microphones
[Re: Dodger]
#1032805 - 09/02/13 10:26 AM
|
|
|
|
Hire a nice upright?
|
Exalted Wombat
Joined: 06/02/10
Posts: 4202
|
Re: Using out of phase fallback to reduce spill into microphones
[Re: Dodger]
#1032821 - 09/02/13 03:13 PM
|
|
|
Quote Dodger:
Hello
I
recently recording a choir with a piano accompaniment. I am very happy with the sound i
achieved from the choir. However the piano sound was lacking quite alot.
A
freind recommended that next time i record the choir. (the original recording were only
"test" recordings of a rehearsal with a "proper" recording still to be done.) I record the
piano separately before hand then play it back to the choir trough a normal wedge monitor
but with the audio inverted? By playing it back out of phase apparently still into the
choir microphones would be greatly reduced?
thoughts?
Absolutely not! You'd destroy the
performance completely. As you would by trying to position the choir so they heard less
of the piano.
Better speakers for the piano sound like a good idea. Ideally,
move to a better location with a better piano.
But who's the customer? The
keyboard may not match YOUR expectation of a piano sound, but the choir are presumably
used to it. Are you recording their performance, or trying to produce it?
|
Dodger
Joined: 28/11/09
Posts: 198
|
Re: Using out of phase fallback to reduce spill into microphones
[Re: Dodger]
#1032938 - 10/02/13 08:48 PM
|
|
|
The recordings are not for anything of particular importance just a bit of fun really. i
was trying to gain experience in recording larger ensambles as its something i've always
wanted todo last time i recorded them. it was just a rehearsal but hopefully
if we decide (ive got my fingers crossed because i really want todo it) to go for a short
EP then ide hope they would let me produce it more. as there is a completely
0 budget it is just for fun really i dont think renting a better space would be an option
regrettably. i think i will just have to go wedge monitors as quite as i can
get away with and roll off sub 300 htz?  ill get some copys of the test recordings and put them onto sound cloud tomorrow and see
what you guys think thanks again for all your advice Jack
|
Urthlupe
member
Joined: 20/09/02
Posts: 379
Loc: West Midlands, UK
|
Re: Using out of phase fallback to reduce spill into microphones
[Re: Dodger]
#1032962 - 11/02/13 12:57 AM
|
|
|
Your attitude is spot on Jack. Go ahead, and enjoy  Loopy
|