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In physics, quantum acoustics is the study of sound under conditions such that quantum mechanical effects are relevant. For most applications, classical mechanics are sufficient to accurately describe the physics of sound. However very high frequency sounds, or sounds made at very low temperatures may be subject to quantum effects.
These sounds include transient audio phenomena and are known in acoustics and signal processing by various names including sound particles, quantum acoustics, sonal atom, grain, glisson, grainlet, trainlet, microarc, wavelet, chirplet, fof, time-frequency atom, pulsar, impulse, toneburst, tone pip, acoustic pixel, and others. In the frequency ...
A quantum amplifier is an amplifier which operates close to the quantum limit. Quantum noise becomes important when a small signal is amplified. A small signal's quantum uncertainties in its quadrature are also amplified; this sets a lower limit to the amplifier. A quantum amplifier's noise is its output amplitude and phase.
Nightingale floors (鴬張り or 鶯張り, uguisubari) listen ⓘ are floors that make a squeaking sound when walked upon. These floors were used in the hallways of some temples and palaces, the most famous example being Nijō Castle, in Kyoto, Japan.
Charles Tahan is a U.S. physicist specializing in condensed matter physics and quantum information science and technology. He currently serves as the Assistant Director for Quantum Information Science (QIS) and the Director of the National Quantum Coordination Office (NQCO) [1] within the White House Office of Science and Technology Policy.
Normal sound in gases is a consequence of the collision rate τ between molecules being large compared to the frequency of the sound wave ω ≫ 1/τ. For second sound, the Umklapp rate τ u has to be small compared to the oscillation frequency ω ≪ 1/ τ u for energy and momentum conservation.
"Attention Tokyo" by Human Audio Sponge "Awake In Neo Tokyo" by Freez-E-Style (techno) "Back In Tokio" by Yellow Magic Orchestra "Back To Tokyo" by Axelle "Black Tokyo" by Aux 88 "Blue Tokyo" by Subaeris "Blues From Tokyo" by Creation (Japanese band) "Boogie Man Lives In Tokyo" by Ryojiro Furusawa & Lee Oskar "Boy King Of Tokyo" by Bill Lloyd
The 100 Soundscapes of Japan (日本の音風景100選) are a number of noises selected by the Ministry of the Environment as particularly representative of the country. They were chosen in 1996, as part of government efforts to combat noise pollution and to protect and promote protection of the environment.