Surround+Sound+Explained,+and+How+it+is+Used+Today

At the turn of the century, home theater systems hit the market. A new audio technology known as 5.1 surround sound was making its way into consumers' homes. (The number five stands for the three front speakers and the two speakers placed behind the listener. The one is the subwoofer which transmits low frequencies.) When 5.1 sound was first being marketed, the equipment was costly and was not available in many homes. Since then, prices have gone down, and with the invention of the blu-ray disc, more and more people are obtaining home theater systems. Like the picture quality of a blu-ray disc, the sound is also considered high definition (mixed at a higher bitrate and sampling rate than a CD or mp3 file). Movies now released on blu-ray are available in this format. Bands like Pink Floyd are releasing some of their most famous albums in surround sound, and popular artists like Rihanna, Usher, and Lady Gaga are releasing some of their concerts as well. (This practice is known as a "concert film" and has been around since the 70s). Many companies consumers are familiar with, like Sony and JVC, make home theater systems at reasonable prices.

Audio Recording Software for the Blind or Descriptive Movies for the Blind 