Sound amplification by stimulated emission of radiation phenomenon, known as the Larsen effect, is the result of a positive feedback. In general, every oscillator consists of three main parts. These are the power source or pump, the amplifier and the positive feedback leading to the output. The corresponding parts in a SASER device are the excitation or pumping mechanism, the active (amplifying) medium, and the feedback leading to acoustic radiation. Pumping can be performed, for instance, with an alternating electric field or with some mechanical vibrations of resonators. The active medium should be a material in which sound amplification can be induced. An example of a feedback
Sound of a Woman Sound of a Woman Sound of a Woman is the major label debut studio album by Canadian recording artist Kiesza. It is her second album after her 2008 self-titled independent release and her first full-length international debut. It was released on 17 October 2014. In February 2014 Kiesza released the video for her new single "Hideaway" through the indie label "Lokal Legend". "Idolator" considered it unique, for having a single take through the entire video, as Kiesza walked and danced through the streets of Brooklyn. John Gentile of "Rolling Stone" called the style "impressive". Kiesza reported to "Rolling Stone" that