It is an environment in which there are no reflective surfaces and obstructions in all directions. In this region, the sound level drops 6dB for a doubling in distance from the sound source.
If you are looking for more information on Where can I get free acoustic guitar lessons, the best place to look for the information is on guitar.about.com/library/blguitarlessonarchive.htm
There are beginner acoustic guitar lessons that you can take online. Some of them are free, but you have to pay for others. You can get free tablatures also.
Yes, Circa Survive actually has many acoustic songs. These songs are: [Blue Sky Noise album] Get Out (Acoustic), I Felt Free (Acoustic) Dyed in the Wool (Acoustic), Every Way (Acoustic), and from [Juturna album] Meet Me in Montauk.
Acoustic can mean not amplified, as in an acoustic guitar. The MTV show "Unplugged" features bands playing acoustic guitars instead of electric ones. Acoustic can mean the properties of the environment which reflect sound. The acoustic tile in the room deadened the noise. Acoustic can also mean the sonar or radar signature of an object. The sonar operator said the acoustic signature was only that of a whale.
Free acoustic guitar lessons are not readily available. Musicians who are open to bartering for their instruction may be found by looking on your local Craigslist.
To deaden the room making it a more accurate mixing environment
It's the field of study on what effects sound , frequencies , and music have on living organisms
In researching online, one can find free acoustic guitar lessons. Most of the free lessons are for a couple of online sessions given to the student with the hope of selling either a lesson book or video to the new student.
You can purchase left handed acoustic guitars from websites such as Guitar Center. Once on the page, type "Left Handed Acoustic Guitars" into the search field at the top of the page and press enter to bring up the guitars.
It stands for "Our Hands Are Free". They are an expiremental acoustic band from Temecula, CA.
http://www.hochweber.ch/guitar.htm
Videos of Knife Party acoustic by Deftones can be watched at video streaming websites such as YouTube. Once on the page, type 'Deftones Knife Party acoustic' into the search field at the top of the page and press enter to bring up the videos.