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While wow is perceived clearly as pitch variation, flutter can alter the sound of the music differently, making it sound ‘cracked’ or ‘ugly’. A recorded 1 kHz tone with a small amount of flutter (around 0.1%) can sound fine in a ‘dead’ listening room, but in a reverberant room constant fluctuations will often be clearly heard.
The terms "wow and flutter" are often referred to together, flutter being a higher-rate version of wow. Scrape flutter—a high-frequency flutter of above 1000 Hz—can sometimes occur from the tape vibrating as it passes over a head, as a result of rapidly interacting stretch in the tape and stiction at the head. It adds a roughness to the ...
A primary design goal was for high fidelity, but having good build quality, control over wow and flutter, and minimized resonance made the equipment particularly suitable for use in nightclubs and other public-address applications. Since its release in 1979, the SL-1200MK2 and its successors were the most common turntables for DJing and scratching.
Wow is a form of flutter that occurs at a slower rate. Wow and flutter are most noticeable on signals which contain pure tones. For LP records, the quality of the turntable will have a large effect on the level of wow and flutter. A good turntable will have wow and flutter values of less than 0.05%, which is the speed variation from the mean ...
"Wow" is slow speed (a few Hz) variation, caused by longer-term drift of the drive motor speed, whereas "flutter" is faster speed (a few tens of Hz) variations, usually caused by mechanical defects such as out-of-roundness of the capstan of a tape transport mechanism. The measurement is given in % and a lower number is better.
Pinch wheel or pinch roller is the term for the "rubber" wheel which forms part of the drive mechanism in many forms of tape recorder and player. The magnetic tape is squeezed between the "capstan" (a precision shaft driven at constant speed) and the pinch wheel and so is drawn past whatever combination of record, replay and erase heads the "tape deck" employs.
Linn presented an important challenge to that by claiming that the source (i.e. the turntable) was the most important part of the system. [1] Ivor Tiefenbrun has talked about how Sondek derives from the term “sound deck” to emphasise the revolutionary concept that the turntable, the “deck”, is responsible for the sound quality. [9]
All of the Hanpin-made turntables seem to have an inordinately high wow and flutter spec, even their own top-of-the-line models, the DJ-5500 and DJ-3560. The only exception to this for Hanpin-made turntables seems to be the ReLoop RP-7000 and RP-8000 which claim a wow and flutter spec of 0.01% wrms.