G
guy
New member
My recording room as this annoying ringing metalic sound in the end of the reverb, what couse it and how to solve it?
version2
New member
May be something rattling in the walls, perhaps?
knightfly
GrouchyOldFartOnBatteries
If you can stand almost anywhere in the room (except maybe next to the curtains) and clap sharply and hear the ringing, it is flutter echo. Caused by parallel walls and not enough absorption at mid/high frequencies.
If that's the case, you can either DIY some absorption panels, or buy some Markertek or Auralex studiofoam and apply it to the walls.
Auralex has a good primer on acoustic treatment at
www.acoustics101.com - check it out.
When you say "recording room", I'm assuming you mean the room where things are when they get recorded, NOT the room all the recording gear is in. These are typically called "tracking" and "control" rooms, respectively.
A tracking room doesn't have to be symmetrical - you can alternate foam and bare walls, generally putting foam on one wall and bare on its mirror counterpart. This means where there is foam on one wall, it's not on the opposite wall, and vice versa.
Sometimes heavy curtains or moving blankets hung 3-4 inches off the walls is enough.
If your floors are bare, the flutter echo can also come from floor/ceiling parallelism. Foam on the ceiling will fix this.
Try moving the instrument (sound source AND mic) around in the room, making test recordings. That may help. In some cases, draping moving pads around the sound source and mic (not between the two) can help tame room anomalies.
C'mon back if none of this helped - don't forget the hand clapping experiment so we will know if this is the problem... Steve
If that's the case, you can either DIY some absorption panels, or buy some Markertek or Auralex studiofoam and apply it to the walls.
Auralex has a good primer on acoustic treatment at
www.acoustics101.com - check it out.
When you say "recording room", I'm assuming you mean the room where things are when they get recorded, NOT the room all the recording gear is in. These are typically called "tracking" and "control" rooms, respectively.
A tracking room doesn't have to be symmetrical - you can alternate foam and bare walls, generally putting foam on one wall and bare on its mirror counterpart. This means where there is foam on one wall, it's not on the opposite wall, and vice versa.
Sometimes heavy curtains or moving blankets hung 3-4 inches off the walls is enough.
If your floors are bare, the flutter echo can also come from floor/ceiling parallelism. Foam on the ceiling will fix this.
Try moving the instrument (sound source AND mic) around in the room, making test recordings. That may help. In some cases, draping moving pads around the sound source and mic (not between the two) can help tame room anomalies.
C'mon back if none of this helped - don't forget the hand clapping experiment so we will know if this is the problem... Steve
G
guy
New member
thanx,
it is probably flutter echo, since claping hand (and other sharp tranist) revil the ringing noise.
the strang thing is that this tracking room is build professionaly and it has none of this problam when it was empty, it only had a flat very long decay, after I placed some buffel abserbers the problam strated, I really believ than it might be the echo between celing/ floor.
how much foam will do? I don't want to mmake the room totaly dead.
thanx
guy
ps
the ring is heared only in some parts of the room
it is probably flutter echo, since claping hand (and other sharp tranist) revil the ringing noise.
the strang thing is that this tracking room is build professionaly and it has none of this problam when it was empty, it only had a flat very long decay, after I placed some buffel abserbers the problam strated, I really believ than it might be the echo between celing/ floor.
how much foam will do? I don't want to mmake the room totaly dead.
thanx
guy
ps
the ring is heared only in some parts of the room
knightfly
GrouchyOldFartOnBatteries
I would try small (2 feet by 4 feet) areas on the ceiling where the ringing is worst. 2", possibly 3" foam if the ringing is lower pitched.
If the baffle absorbers you mentioned are portable, I would first try removing them to see what the room is like without them. You did say the problem didn't start until the absorbers were placed -
The total amount of foam needed would depend on the size of the room, and how many spots are bad enough to be noticeable... Steve
If the baffle absorbers you mentioned are portable, I would first try removing them to see what the room is like without them. You did say the problem didn't start until the absorbers were placed -
The total amount of foam needed would depend on the size of the room, and how many spots are bad enough to be noticeable... Steve