Acoustic Vocal booth 33 ( AVB33) reduced about 10 dB of noise at the 2016 Summer NAMM show.
AVB booths series designed to cancel echo and reverberations fro clear audio recording, but because they absorb sound energy coming through, they therefore also reduce the noise level.
For example air-conditioner noise, other humming noises can be effectively dampen by AVB33.
Acoustic Vocal Booth AVB63 Review. Voice over actors recording in the sound booth. Audio samples. Construction of the vocal booth with sound blankets. This is a make-shift vocal booth made with frames covered with acoustic blankets. Made and sent by a customer from the UK.