Without going into the finer details of acoustic treatment (I couldn't if I wanted to as it is a science that is way over my head!) I would like to explain a concept that has helped me to tune my vocal booth for the optimum sound for my voice.
The first thing to consider is your voice, and what characteristics you would like to enhance, or remove. For example, if you have a voice that is highly sibilant you do not want surfaces that exaggerate that. Or if you have a voice that tends not to cut through in a mix, you do not want a large amount of soft treatment that soaks all the high frequency sound in your voice and leaves just the lower (muddier) sounds.
I installed a new computer monitor in my vocal booth recently and I was expecting that I would need to compensate for the flat shiny screen with some kind of trapping or diffusion. In actual fact the screen served to brighten the sound of my voice just the right amount to help my voice cut through music and SFX just that little bit more. It was a happy accident, but proved to me how important it is to get the acoustics right before you commit audio to your hard drive.
It is an old adage in the music world that you get things right at source, usually cited sarcastically with the much maligned expression " we will fix it in the mix". It is the same in the voice and post world, and is sometimes more important as there are often times when a dry voice is the only thing that is heard, and everything that can be done to make that as clear and audible (and pleasant!) as possible is a vital investment of both time and money.
So before you reach for that EQ, or think about your next expensive microphone or pre amp purchase, you might be able to achieve a better result by tweaking the acoustics of your recording environment.
Have you experienced a change in the sound of your recordings as a result of acoustic treatment? Or do you disagree with me? I would love to know what you think.
Thanks for reading!
British voiceover artist privileged to be working in New York City.