- critical noise level
- 临界噪声级
Medical Chinese dictionary (湘雅医学词典). 2013.
Medical Chinese dictionary (湘雅医学词典). 2013.
Noise shaping — is a technique typically used in digital audio, image, and video processing, usually in combination with dithering, as part of the process of quantization or bit depth reduction of a digital signal. Its purpose is to increase the apparent signal… … Wikipedia
Critical band — The term critical band, introduced by Harvey Fletcher in the 1940s, referred to the frequency bandwidth of the then loosely defined auditory filter. Psychophysiologically, beating and auditory roughness sensations can be linked to the inability… … Wikipedia
Critical bands — The term critical band, introduced by Harvey Fletcher in the 1940s, referred to the frequency bandwidth of the then loosely defined auditory filter. Since Georg von Békésy’s studies (1960), the term also refers literally to the specific area on… … Wikipedia
Dolby noise-reduction system — A Dolby 361 A type noise reduction module Dolby NR is the name given to a series of noise reduction systems developed by Dolby Laboratories for use in analog magnetic tape recording. The first was Dolby A, a professional broadband noise reduction … Wikipedia
Dolby noise reduction system — Dolby NR is the name given to a series of noise reduction systems developed by Dolby Laboratories for use in analogue magnetic tape recording. The first was Dolby A professional noise reduction for recording studios in 1966, but the best known is … Wikipedia
Interfering noise — Interfering noises(or interfering sounds) are sounds with a negative sound quality, that is,the sound event leads to a hearing event, which is perceived asunpleasant, disturbing and interfering. This sound event usuallyreleases negative… … Wikipedia
Coil Noise — is a phenomenon in electronics which produces both undesirable audible sound, and electronic noise. Contents 1 Description 2 Devices Effected By Coil Noise 3 Reducing Coil Noise 4 … Wikipedia
Art of Noise — Infobox musical artist Name = Art of Noise Img capt = Img size = Landscape = Background = group or band Alias = Origin = London, England Genre = Synthpop, Avant garde, Ambient, New Wave Years active = 1983 1990, 1998 2000 Label = ZTT China… … Wikipedia
Comparison of analog and digital recording — This article compares the two ways in which sound is recorded and stored. Actual sound waves consist of continuous variations in air pressure. Representations of these signals can be recorded using either digital or analog techniques. An analog… … Wikipedia
Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… … Universalium
A-weighting — A graph of the A , B , C and D weightings across the frequency range 10 Hz – 20 kHz Video illustrating A weighting by analyzing a sine sweep (contains audio) A weighting is the most … Wikipedia