Sound amplification by stimulated emission of radiation the axes of the mirrors, it is possible for photons to repeat multiple reflections and force more and more photons to follow them producing an avalanche effect. The number of photons of this coherent laser beam increases and competes the number of photons perished due to losses. The basic necessary condition for the generation of a laser radiation is the population inversion, which can be achieved either by exciting atoms and inducing percussion or by external radiation absorption. A SASER device mimics this procedure using a source-pump to induce a sound beam of phonons. This sound beam propagates not in
A-sound featured two bonus live cuts. Later in 2009, A-Sound began recording a follow up album, but after becoming unsatisfied with the results, scrapped it. A-Sound covered a song from The Beatles. A-sound A-sound is a Mongolian indie rock band. They have had success in Mongolia with songs and albums released in both Mongolian and English versions. Their single "Release" was number one on the Mongolian chart for nine weeks. "A-sound " with five members (Lead Vocalist, Pianist, Bass Guitarist, Drummer, Solo Guitarist ). Before the band gathered they used to play separately. In 2006 all members decided to become band