Shock wave cannot travel any further upstream and the pressure progressively builds in that region; a high pressure shock wave rapidly forms. Shock waves are not conventional sound waves; a shock wave takes the form of a very sharp change in the gas properties. Shock waves in air are heard as a loud "crack" or "snap" noise. Over longer distances, a shock wave can change from a nonlinear wave into a linear wave, degenerating into a conventional sound wave as it heats the air and loses energy. The sound wave is heard as the familiar "thud" or "thump" of a sonic boom,
Twang Twang Shock-A-Boom Twang Twang Shock-A-Boom Twang Twang Shock-a-Boom is an acoustic three-piece band led by Davíd Garza. The name is derived from the sounds of the guitar, bass, and drums. Twang Twang Shock-a-Boom was described by the Austin Chronicle as “one of the most breathtaking musical projects Austin has ever seen.” . For 10 months, the trio of Davíd Garza, Jeff Haley, and Chris Searles played humorous tunes with the bare-bones setup of guitar, upright bass, and a guitar case standing in for drums. It began when Garza and his music-school friends decided to go busk in the West Mall of Austin,