Vocal Booth Problem

Hello, this is my first entrance in your forum. My name is Diego Guerrero. I'am spanish voice talent. I have my home studio. I have problems in my vocal booth. When I speak inside I ear a "metalic bass" (not instrument) with my voice. I ear this "bass sound" around the cieling. I have a low bass voice like baritone. This is the details of my vocal booth (in meters). lenght: 1.85 widht: 1.40 ceiling: 2.57 All walls have: 1 meter of mdf and at the cieling have glass fiber below wool. One of this walls have the entrance. This is a triple glass door with air inside. The cieling have a glass fiber below wool. I have 2 angles walls in 90 degrees and the other 2 angles are break at 45 degrees with two mdf. I no ear reververation inside but I hear these sound when I speak: booom, booom, mmmm, mmmmm. Can you help me please? Sorry for my english. Best regards. Diego Guerrero www.diegoguerrero.com

Perhaps you have a bit of a mode problem, and could benefit from some bass trapping in your booth. How thick is your fiberglass room treatment? Thin treatments generally result in too much top end removed, leaving the low end boomy and uncontroleld. Cheers Kris

Kris, Thanks for your answer. This is the actual tratement in my vocal booth: From floor to the first 1 meter have 4" fiberglass and MDF. This is in all walls. From 1 meter of floor to the cieling I have 4" fiberglass with fabric. On two corners on front of my record position I have one bass trap in each corner with 4" fiberglass with fabric. The bass trap have face of 0.22 cm. The run from floor to the cieling. On the cieling I have only the half of cieling with fiberglass with fabric. The other half of the cieling I have one resonator made on wood. I have to resonators on the front and on the back to my record position. You can look in the photo that I pick off this resonators to probe the vocal booth and...nothing happend. This resonators got to 1 meter from floor to the cieling. I have a dude withe some things. I think the fabric are very strong. Because I blow thru them and the air not pass thru easy. I think that I need cover all the cieling with 4"fiberglass and fabric but, I don't know if I need put this panel on the cieing or separete a little from cieling. I don't know if the front of bass tramps is enought (0.22cm). I see another studios and the bass traps are more wide. Well, I have a lot of dude's. I hope that you can give any solutions. Again, thanks for your answer. Best Regards, Diego Guerrero www.diegoguerrero.com

I would try some Auralex or similar corner bass traps... Jon