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A variable speed pitch control (or vari-speed) is a control on an audio device such as a turntable, tape recorder, or CD player that allows the operator to deviate from a standard speed (such as 33, 45 or even 78 rpm on a turntable), resulting in adjustments in pitch. [1]
Users can set pitch-shifting intervals, add harmony, or detune the signal for a chorus-like effect. [2] The first model was introduced in 1989. [2] Later models added more accurate polyphony, drop-tuning modes, a MIDI input for external control, and a "dive bomb" setting that emulates the sound of a whammy bar dropping the pitch.
A tapping machine is a device used to test the impact sound insulation of floors, for measurements of impact noise (noise of footsteps) in the field of building acoustics. The standard tapping machine [1] has five hammers placed in a line. Each hammer is lifted and dropped in turn, creating 10 impacts per second on the floor.
Volume control: The experts we spoke with agreed that a volume knob is an important component to look for. “The World Health Organization (WHO) recommends that environmental noise should be ...
It carries over many of the improved upon features of the MK3D like the lack of 0 crossing quartz lock for better pitch control & the added spare cartridge holder. MK5 models have a removable lid as opposed to the MK2 and MK3 removable hinged lid. The MK5 is the last 1200 model to retain an analog, Quartz-clock-based pitch control.
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