{Filters}
Terms: Q - Qzz
| Term (optional text) {Frame of Reference} |
Definition |
| Category |
| Q (factor) {Filters} |
See: | quality factor | |
| Equipment & Components |
| Q rating {Celebrity} |
Refers to an ad research rating that gauges how easily a celebrity is recognized — and how well the celebrity is liked Reference(s): | Wikipedia – Q Score  | |
| Film Theory |
| QSXGA | See In: | aspect ratio {Video} - QSXGA | |
| Presentation, Video Camera |
| quacker clamp | See: | reflecting light - bead board clamp | |
| Grip & Electric |
| Quad | See: | quadrophonic | |
| Presentation |
| quad mic(rophone) | See In: | microphone types - quad mic(rophone) | |
| Microphone Related |
| quad mic(rophone) cable | See: | cable - star-quad microphone cable | |
| Equipment & Components |
| quad track | 
Track negative, and release print made there from, which contains all three digital sound formats (Dolby Digital, DTS and SDDS) plus a standard SVA analog track.Photo: a 35 mm film print featuring all four audio formats (or "quad track") from left to right: • SDDS (blue area to the left of the sprocket holes) • Dolby Digital (grey area between the sprocket holes labelled with the Dolby "Double-D" logo in the middle) • analog optical sound (the two white lines to the right of the sprocket holes) • DTS timecode (the dashed line to the far right) Reference(s): | Wikipedia – 35 mm film | | Wikipedia – Dolby Digital | | Wikipedia – DTS {sound system} | | Wikipedia – Movie projector – Analog Optical Sound | | Wikipedia – Sony Dynamic Digital Sound | |
| Post Lab |
| quadraphonic sound | Coined in the 1970s, the original term for surround sound. See: | surround sound | |
| Presentation |
| quadrature | A state of separation or relationship equal to 90°. For example, two same frequency sine waves one-quarter wavelength apart are in quadrature. A phase difference equal to one-fourth of a period. Reference(s): | Wikipedia – Quadrature phase | |
| Measurements |
| quadrophonic | AKA: | Quad | A sound system which uses four independent speakers (or sets of speakers). The fore-runner of today′s Surround Sound. Reference(s): | Wikipedia – Quadraphonic sound | See Also: | stereophonic (sound) | |
| Presentation |
| quaff | To drink (a beverage) heartily: quaffed the ale with gusto. Reference(s): | Wikipedia – Quaffing | |
| Talent |
| quality factor | AKA: | Q (factor) | Referring to the bandwidth of one band of a parametric equalizer, Q is calculated by dividing the center frequency in Hz by the width of the boost or cut zone (+3 dB or −3 dB above or below the center frequency). For example, a gentle boost centered at 1000 Hz which extends from 750 – 1250 Hz measured 3 dB above flat has a Q of 1000/500 = 2. By comparison, a deep notch centered at 1000 Hz which extends from 995 – 1005 Hz measured −3 dB above flat has a Q of 1000/10 = 100. Reference(s): | Bandwidth vs. Q Calculator | | Constant-Q Graphic Equalizers | | Wikipedia – Q factor | |
| Sound |
| quality of light | See: | attributes of light | |
| Grip & Electric |
| quality vs. quantity | Like so much in life, lighting is often compromised when you must, or imagine you must, go for the most instead of the best. |
| Grip & Electric |
| quantization | The process of converting, or digitizing, the almost infinitely variable amplitude of an analog waveform to one of a finite series of discrete levels. Performed by the A/D converter. The process of approximating a continuously variable parameter by a series of discrete values. When sampling audio for storage on CD, the signal is quantized to 16-bit resolution, meaning the level at any particular sample point has to be represented by a number that can be defined by a 16-bit binary word. This means it must be one of 65,536 distinct numbers (216 = 65,536). An 8-bit telephone signal has only 256 distinct levels. The difference between the original signal level and the quantized level is what gives rise to quantization noise. Reference(s): | Wikipedia – Quantization {image processing} | | Wikipedia – Quantization {signal processing} | | Wikipedia – Quantization {sound processing} | See Also: | quantization noise | SQNR | |
| Science of Sound |
| quantization distortion | AKA: | quantization error | Error resulting from quantizing an analog waveform to a discrete level. It is the difference between the actual value of the analog signal at the sampling instant and the nearest quantization value. Therefore, in general, the longer the word length, the less the error, because there are more step sizes to choose the closest. Reference(s): | Wikipedia – Quantization error | See Also: | SQNR | |
| Science of Sound |
| quantization error | Reference(s): | Wikipedia – Quantization error | See: | quantization distortion | |
| Science of Sound |
| quantization level | AKA: | quantizing increments | quantizing levels | A standard level that can be recognized by a digital recording system. |
| Science of Sound |
| quantization noise | Modulation noise (also perceived as distortion) that occurs in digital processing/recording caused by the sample levels being altered to conform to standard quantization levels. Reference(s): | Wikipedia – Quantization error | |
| Science of Sound |
| quantize | The conversion of the values of an analog wave or random occurrence into steps. Reference(s): | Wikipedia – Quantization {signal processing} | |
| Science of Sound |
| quantizing increments | See: | quantization level | |
| Science of Sound |
| quantizing levels | See: | quantization level | |
| Science of Sound |
| quarter | A quarter of a year (three months). Used by production Accountants and Publicity Departments for financial issues. |
| Film Theory |
| quarter apple | See In: | apple box(s) - quarter apple | |
| Grip & Electric |
| quarter load {Ammunition} |
See: | blank (cartridge) | |
| General |
| quarter-inch jack | See In: | connector - 1/4" TRS | connector - 1/4" TS | |
| Equipment & Components |
| quarter-inch tape | A standard width of audio tape used in audio cart machines. Reference(s): | Wikipedia – Magnetic tape | |
| Analog Media |
| quarter-track (stereo) {Recording} |
An analog recording head arrangement that allows recording two tracks in one direction and another two tracks in the opposite direction. The name comes from each track and guard band using one quarter of the tape width. |
| Equipment & Components |
| quartet | #1: A group of four adjacent digits operated on as a unit. |
| Measurements |
| quartz (lamp) | AKA: | halogen lamp | quartz iodine (lamp) | tungsten (lamp) | tungsten-halogen (lamp) | Gets its name from the material used in the envelope and the lamp (bulb) that goes into the compatible lighting fixture. They can get very hot when in use. It is also very important never to touch the bulb with your bare hands at any time. Oil from your hands will cause the bulb to blister and explode. color temperature: a fairly consistent 3,200°K. The lamp consists of: • envelope: made of quartz glass, designed to withstand high temperatures and pressures, and contains the … • atmosphere: regenerative halogen gas that eliminates premature lamp blacking and burnout, and a … • filament: made of tungsten and produces heat and light when electricity flows through it. Reference(s): | Wikipedia – Halogen | | Wikipedia – Halogen lamp | |
| Grip & Electric |
| quartz iodine (lamp) | See: | quartz (lamp) | |
| Grip & Electric |
| quasi-parametric | See: | parametric equalizer | |
| Equipment & Components |
| query letter | An unsolicited letter sent to a Producer or Agent to elicit interest in a Writer′s product. Reference(s): | Wikipedia – Query letter | |
| Film Theory |
| quick study | Actor or Performer who can accurately memorize complicated lines and blocking within a very short time. Especially important for film and television Talent. |
| Talent |
| quick-release |
A latching device for quickly mounting and removing the camera from the tripod. |
| Camera |
| quick-release plate |
See: | quick-release shoe | |
| Camera |
| quick-release shoe |
AKA: | quick-release plate | tripod plate | wedge mount | The part of the quick release that attaches to the camera is called the quick release shoe, and is inevitably worth double-checking, as they frequently stray away from the tripod when left behind on the camera. |
| Camera |
| Quicktime ® video |
A digital video media format originally developed for the Apple Computer range, but is now also available for other platforms. Reference(s): | Wikipedia – QuickTime | |
| Post Picture |
| QUIET ON THE SET! | AKA: | QUIET PLEASE! | Direction given before shooting a Scene instructing Cast and Crew to be quiet. |
| On-set Calls |
| QUIET PLEASE! | See: | QUIET ON THE SET! | |
| On-set Calls |
| quintophonic sound | The name of the 5-channel discrete surround system developed by John Mosely for The Who′s rock opera, Tommy, production. The forerunner of 5.1 surround systems. See Also: | 5.1 (surround sound) | |
| Presentation |
| quota quickies | Low budget, short subjects made in the UK in the 1930s. The Cinematographic Films Bill, passed in April 1927, stipulated that all UK cinemas would have to include a proportion of British films in their programs. The percentage varied, rising to 20% at one time. "quota quickies" were generally of quite low quality but there are some gems hidden in their midst, notably those by Michael Powell. Reference(s): | Wikipedia – Cinematograph Films Act 1927 | |
| Film Theory |
| quother {Speech} |
To talk in a low and confidential tone. |
| Sound |
| QXGA | See In: | aspect ratio {Video} - QXGA | |
| Presentation, Video Camera |
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