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Drumhead with coating on a snare drum Drumhead with coating on a tom drum Drumhead with coating on a bass drum Anatomy of a drumhead for drumming. A drumhead or drum skin is a membrane stretched over one or both of the open ends of a drum. The drumhead is struck with sticks, mallets, or hands, so that it vibrates and the sound resonates through ...
A Dolby noise-reduction system, or Dolby NR, is one of a series of noise reduction systems developed by Dolby Laboratories for use in analog audio tape recording. [1] The first was Dolby A, a professional broadband noise reduction system for recording studios that was first demonstrated in 1965, but the best-known is Dolby B (introduced in 1968), a sliding band system for the consumer market ...
Noise reduction is the process of removing noise from a signal. Noise reduction techniques exist for audio and images. Noise reduction algorithms may distort the signal to some degree. Noise rejection is the ability of a circuit to isolate an undesired signal component from the desired signal component, as with common-mode rejection ratio.
High-end cassette decks could achieve 15 Hz-22 kHz±3 dB frequency response with wow and flutter below 0.022%, and a signal-to-noise ratio of up to 61 dB (for Type IV tape, without noise-reduction) [citation needed]. With noise reduction typical signal-to-noise figures of 70-76 dB with Dolby C, 80-86 dB with Dolby S, and 85 - 90 dB with dbx ...
Double-tension is a method of applying tension to drum heads. Drum manufacturers use several methods to apply tension to drum heads; the preferred way is to tighten the heads with a hoop that is held tight to the drum shell with a number of individual threaded rods which connect to stanchions mounted with bolts onto the outside of the drum ...
Dolby noise-reduction system. Most often, musicians are concerned not to produce noise, but to minimise it. Noise reduction is of particular concern in sound recording. This is accomplished by many techniques, including use of low noise components and proprietary noise reducing technologies such as Dolby. [98]
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The narrower the head gap, the more bias signal must be used to maintain linearity of the signal on tape which in turn will reduce the high frequency headroom or SOL (Saturated Output Level), particularly with slower tape speeds. Manufacturers must find a compromise between intended tape speeds and head gaps for this reason.
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