How to post threads in Blog : Acoustics & Audio Technology?

You are right. And I should be asking. I learned acoustics through my experience as an engineer at multi million dollar facilities. When they started taking over other studios, I helped them build and acoustically treat them. Now I Design and build custom acoustics for studios, theaters, clubs, you name it. So, here's a technical question. How deep does a bass trap need to be in order to absorb frequencies >20 Hz ? I have built them in many shapes and sizes, and the deeper the better, and in my experience, the best ones I built were veeeery deep. Many acoustics out there are foam based, and do not absorb full range frequencies. The low end is usually the biggest problem. Sometimes, i don't have enough room to be highly effective.

acoustic project is a strong experience practice. I admire you do so much project.

sometimes you can use modern digital tech to refine some acoustic situation especially low frequency to cancel stand wave.

most of time the absorb material should be more thicker to the lower frequency. but its difficult to get it.

Thank you for responding, I appreciate it. I do use digital testing to figure out what is happening in a room, and it helps, but in many cases, for small rooms (that have a square or rectangle shape usually) psychoacoustical problems increase exponentially and you do not have many options to create a truly "tuned" room. To achieve the best results, you need larger rooms and shape is paramount. Indulge me here. Take an outdoor ancient amphitheater. It works because the shape allows sound waves to travel and dissipate accross the steps and upward and out into nowhere, so they don't return. As soon as you put walls up, the sound wants to return to origin, but the shape itself helps you rid yourself of early and late reflections with the right acoustical treatment which includes absorption and diffusion. You would be surprised how many "studios" are these small, rectangle rooms and you have to reinvent the wheel to achieve results. In many ways, these rooms will never have the true characteristics of shapely tuned rooms. Usually, the spaces for studios are large, so I can utilize full coverage and added depth to deal with the low end frequencies. But since I come accross so many small rooms, it amplifies problematic issues. So I combat it with creating custom bass traps not only in corners of rooms but in furniture. It also matters if the listening station has a bass cabinet below the console, etc. I have a brilliant design for a seating area behind the mixing station that I plan to utilize soon. There are more small, independent studios and video editing stations than large ones. So acoustically, they provide more issues. Depth is one of the most important aspect of acoustical treatment, and these small rooms don't have the necessary space. My archnemesis is the vocal booth. Vocal booths are tiny, and a hotbed for early and late reflections. I have, however, maximized results through design. Please take a look at my website if you are curious, www.csoulpro.com. You will see some of my work, and coming soon are pictures of a video editing suite I am working on currently. This is one of my favorite projects to date. Thank you again, csoul....