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Line of noise-reduction systems for audio-tape recording
A Dolby noise-reduction system (Dolby NR) is one of a series of noise reduction systems developed by Dolby Laboratories for use in analog audio tape recording
Dolby_noise-reduction_system
Audio technology company
Dolby Laboratories, Inc. (Dolby Labs or simply Dolby) is an American technology corporation specializing in audio noise reduction, audio encoding/compression
Dolby
Process of removing noise from a signal
Noise reduction is the process of removing noise from a signal. Noise reduction techniques exist for audio and images. Noise reduction algorithms may distort
Noise_reduction
Analogue noise reduction system
The Dolby SR (Dolby Stereo Spectral Recording) noise reduction format was developed by Dolby Laboratories and has been in common use in professional audio
Dolby_SR
American electrical engineer and inventor (1933–2013)
Milton Dolby (/ˈdoʊlbi, ˈdɒl-/; January 18, 1933 – September 12, 2013) was an American engineer and inventor of the noise reduction system known as Dolby NR
Ray_Dolby
Family of noise-reduction systems
also contained a Dolby B-compatible noise-reduction decoder, described as dbx Type B noise reduction; this was possible after the Dolby patent (but not
Dbx_(noise_reduction)
Sound format
1976 system used with optical sound tracks on 35mm film, and Dolby Stereo 70mm noise reduction on 6-channel magnetic soundtracks on 70mm prints. Dolby SVA
Dolby_Stereo
list of noise topics. 1/f noise A-weighting Ambient noise level Antenna noise temperature Artificial noise Audio noise reduction Audio system measurements
List_of_noise_topics
Tape machine for playing and recording audio compact cassettes
combined Dolby B noise reduction system with chromium dioxide (CrO2) tape to create the Advent Model 200, the first high-fidelity cassette deck. Dolby B uses
Cassette_deck
Noise reduction system
The High Com (also as HIGH COM, both written with a thin space) noise reduction system was developed by Telefunken, Germany, in the 1970s as a high quality
High_Com
Surround sound processing technology developed by Dolby Labs
Surround. The surround channel was limited to 7 kHz. It also had Dolby Noise Reduction and an adjustable delay, for improved channel separation and to
Dolby_Pro_Logic
Audio recording using magnetic tape spooled on open reels
alongside the various Dolby systems. Dolby B eventually became the most popular system for Compact Cassette noise reduction and Dolby SR was in widespread
Reel-to-reel audio tape recording
Reel-to-reel_audio_tape_recording
Audio compression technologies
prints with Dolby Digital data also have Dolby Stereo analog soundtracks using Dolby SR noise reduction and such prints are known as Dolby SR-D prints
Dolby_Digital
Topics referred to by the same term
created by Dolby Laboratories Dolby noise-reduction system, a 1965-on series for analog magnetic tape audio by Dolby Laboratories David C. Dolby (1946–2010)
Dolby_(disambiguation)
Ratio between the largest and smallest values that a certain quantity can assume
processes resulted in 7 dB greater range, and Ray Dolby developed the Dolby A-Type noise reduction system that increased low- and mid-frequency dynamic range
Dynamic_range
Former consumer electronics manufacturer
and was quickly replaced by Advent 201 in 1971, incorporating Dolby B noise reduction (for both recording and playback), along with chromium dioxide
Advent_Corporation
American composer and electronic musician (born 1939)
synchronisation. Carlos was also one of the earliest adopters of the Dolby noise reduction system, which she used for her final two-track masters. In 1968, Carlos
Wendy_Carlos
American audio equipment manufacturer
noise reduction system, a decibel companding system used for noise reduction in professional analog tape recording that was in competition with Dolby
Dbx_(company)
Noise reduction system for recorded analog audio
CX is a noise reduction system for recorded analog audio. It was developed by CBS Laboratories (a division of CBS) in the late 1970s as a low-cost competitor
CX_(noise_reduction)
Noise reduction system for vinyl records
The UC compander system (with "UC" derived from Universal Compatible or Universal Compander) is a noise reduction system for vinyl records, aiming at
UC_(noise_reduction)
1975 studio album by Steely Dan
still in good shape, so they remixed the album using the older Dolby noise-reduction system and produced vastly superior results to their initial attempt
Katy_Lied
Series of portable media players by Sony
added a radio system to some Walkman cassette models starting with the model WM-F1 in 1982. The first model with Dolby noise-reduction system and an auto
Walkman
1983 single by Spandau Ballet
direction." The backing vocals for the song were recorded using a Dolby noise-reduction system, but the band decided not to use the decoder that would remove
True_(Spandau_Ballet_song)
1979 studio album by Fleetwood Mac
magnetic tape speed of 30 inch per second with the use of a Dolby noise-reduction system to reduce tape hiss. Buckingham was interested in starting a
Tusk_(album)
Topics referred to by the same term
type of granite rock Adenosine receptor Type A Dolby Noise Reduction, a type of Dolby noise-reduction system Type A videotape, a reel-to-reel helical scan
A_type
American audio engineer and entrepreneur
he collaborated with Ray Dolby of Dolby Laboratories to develop the lower-cost "B" version of the Dolby noise reduction system to reduce tape hiss. This
Henry_Kloss
1978 film directed by Michael Cimino
" The Deer Hunter was Cimino's first film to use the Dolby noise-reduction system. "What Dolby does," replied Cimino, "is to give you the ability to
The_Deer_Hunter
Unpitched, indeterminate, uncontrolled, loud, unmusical, or unwanted sound
a Noise Nuisance". Government of the United Kingdom. (Accessed 21 April 2012). Dolby Laboratories. n.d. "Dolby B, C, and S Noise Reduction Systems: Making
Noise_in_music
Early film audio synchronization system
sound on 35mm film. In particular both Dolby Laboratories and Kodak were investigating the use of Dolby noise reduction on optical soundtracks. In the mid-1970s
RCA_Photophone
Methods to improve tape performance by adjusting input bias
Dolby HX (for 'Headroom eXtension') designed by Gundry for Dolby Laboratories operated as an add-on to the Dolby B noise-reduction encoder. The Dolby
Adaptive_biasing
Divers's solution – Edward Divers Dr. Martens – Klaus Märtens Dolby noise-reduction system – Ray Dolby Doppler radar – Christian Doppler Draisine – Karl Drais
List of inventions named after people
List_of_inventions_named_after_people
Process for reducing noise
equalization curve on 33 rpm and 45 rpm vinyl records. Another is the Dolby noise-reduction system as used with magnetic tape. Pre-emphasis is employed in frequency
Emphasis_(telecommunications)
Mikhail Dolivo-Dobrovolsky Inventor of three-phase motor Ray Dolby Dolby noise-reduction system William Duddell Oscillography, the singing arc lamp Allen
List_of_electrical_engineers
Noise measurement standard
Belger. Dolby Laboratories took up the new CCIR-468 weighting for use in measuring noise on their noise reduction systems, both in cinema (Dolby A) and
ITU-R_468_noise_weighting
1973 album by Mike Oldfield
Developments and an Ampex 2-inch 16-track tape recorder equipped with a Dolby noise-reduction system. Oldfield had Virgin Records hire a variety of instruments for
Tubular_Bells
Line of portable audio players by Sony
WM-DD that was available in same colors and had the addition of Dolby B noise reduction. In marketing terms this is exactly what it was, though technically
Walkman_DD_series
with Joop Sinjou, Netherlands – Compact disc Ray Dolby (1933–2013), U.S. – Dolby noise-reduction system Mikhail Dolivo-Dobrovolsky (1862–1919), Poland/Russia
List_of_inventors
Sound processing technology
widely used, as Dolby noise reduction became very popular. Third-party implementations called it Dynamic Noise Reduction, or DNR. As Dolby may be initialized
Dynamic_Noise_Limiter
Alteration of the original shape of a signal
however, distortion may be desirable. For example, in noise reduction systems like the Dolby system, an audio signal is deliberately distorted in ways that
Distortion
Recording of sound and playing it back
major boost to sales of prerecorded cassettes. The Dolby A noise reduction system, invented by Ray Dolby and introduced into professional recording studios
Sound recording and reproduction
Sound_recording_and_reproduction
High-frequency noise present on analogue magnetic tape recordings
3 dB improvement of the signal-to-noise ratio occurs for every doubling of the track width. A number of noise reduction techniques can be used to reduce
Tape_hiss
Analog videocassette recording format
signal-to-noise ratio, causing objectionable tape hiss at normal listening volume. To counteract the hiss, linear stereo VHS VCRs use Dolby B noise reduction for
VHS
Machine for recording sound onto magnetic tape
to select this. Additionally, systems such as Dolby noise reduction systems have been devised to ameliorate some noise and distortion problems.[citation
Tape_recorder
Radio noise-reduction technology
noise reduction system developed in the 1980s for FM broadcasting in the United States. FM stereo broadcasting is known to incur up to a 23 dB noise penalty
FMX_(broadcasting)
Month of 1965
federal grants. Dolby Laboratories was founded in London by American inventor Ray Dolby, who invented the Dolby noise-reduction system and other innovations
May_1965
playback signal was so low that it compromised the calibration of Dolby noise reduction systems. Most users considered that the size was only suitable for speech
Audio_tape_specifications
pilot tone interferes with the proper functioning of reciprocal noise reduction systems, causing audible artefacts such as breathing and pumping For this
MPX_filter
Cinema sound system
can also be decoded on Dolby Cinema processors, as it was designed to be compatible with Dolby Stereo (using A-Type noise reduction) prints. In October 2016
Ultra_Stereo
Transistor amplifier
early 1970s, were successfully used in professional Dolby A and consumer Dolby B noise reduction systems but did not meet all of the demands of mixing engineers
Blackmer_gain_cell
Filter used to emphasize or suppress aspects in measurements
with the introduction of compact cassette recorders and Dolby-B noise reduction. A-weighted noise measurements were found to give misleading results because
Weighting_filter
Audio equipment quality assessment
broadcasters worldwide, and it was also adopted by Dolby, for measurements on its noise-reduction systems which were rapidly becoming the standard in cinema
Audio_noise_measurement
Japanese manufacturer of audio equipment
the G-16S in 1990, being the first recorder implementing the Dolby S noise reduction system. The G-24S was the last analogue multitrack machine, which fitted
Fostex
Means of quantifying system performance
1970s, when the introduction of compact cassette tape, dbx and Dolby noise reduction techniques revealed the unsatisfactory nature of many basic engineering
Audio_system_measurements
Home entertainment system that aims to replicate the experience of a movie theater
Newer lossless audio from Dolby Digital Plus, Dolby TrueHD, DTS-HD High-Resolution Audio and DTS-HD Master Audio and speaker systems with more audio channels
Home_cinema
signal, and which cannot be reduced by Dolby or dbx noise reduction systems. Dynamic range, or signal-to-noise ratio, was usually understood as the ratio
Compact Cassette tape types and formulations
Compact_Cassette_tape_types_and_formulations
Radio transmission of audio by frequency modulation
add analog noise reduction to FM broadcasting were carried out in the 1970s and 1980s: A commercially unsuccessful noise reduction system used with FM
FM_broadcasting
Class of sound effect
signals, aligning audio with threat directions, and integrating active noise reduction. AMD TrueAudio – AMD's application-specific integrated circuit Ambiophonics –
3D_audio_effect
Frequency response curves used in sound pressure level measurement
by Dolby Laboratories who realised its superior validity for their purposes when measuring noise on film soundtracks and compact cassette systems. Its
A-weighting
Cassette deck manufactured from 1985–1990
supplanted by the nearly identical Revox B710 MKII, which added Dolby C noise reduction. In 1982, the company introduced a professional version, the Studer
Revox_B215
Topics referred to by the same term
Management System (or revenue management software), a software system for managing occupancy in hotels and suchlike RMS (noise reduction) (Rauschminderungssystem)
RMS
Frequency characteristics of hearing and perceived volume
subjective measure of noise on audio equipment, especially on the newly invented compact cassette tape recorders with Dolby noise reduction, which were characterized
Equal-loudness_contour
Entertainment electronics in cars
with longer play times, better tape quality, auto-reverse, and Dolby noise reduction. They were popular throughout the 1970s and 1980s. Cassette players
Vehicle_audio
Set of commercial dithering and noise shaping algorithms
Optimized Wordlength Reduction) is a set of commercial dithering and noise shaping algorithms used in digital audio bit-depth reduction. Developed by a consortium
POW-R
epidemiologist (born 1938). 12 September – Ray Dolby, audio pioneer, invented the Dolby noise-reduction system and surround sound (born 1933). 16 September
2013_in_science
Loss of quality between copies
analog noise reduction systems such as Dolby A helped reduce the amount of audible generation loss, but were eventually superseded by digital systems which
Generation_loss
Digital camera model
100 to 16000, several noise reduction features, 8 white balance presets including custom balance and exposure control systems. The battery capacity is
Sony_Alpha_65
Analog audio format based on tape
dramatically with the use of new materials such as chromium dioxide, Dolby B noise reduction, and better manufacturing quality. For most people, the quality
Elcaset
Japanese consumer electronics brand
capstan drive that reduced wow and flutter, and Dolby-B noise reduction to improve the signal-to-noise ratio. The dual capstan drive ensured superior head-to-tape
Nakamichi
Audio Redbook format with custom Dolby AC1 (DP85) tracks which were also pre-encoded with Dolby B Type Noise reduction prior to compression. These two
Personics
Audio channel
two-channel recording. Each of these two channels used Dolby A-type noise reduction (later replaced by Dolby SR type). In addition a matrix, similar in principle
Center_channel
Videocassette format; the first of its kind
cuts-only editing controls, "Slo-Mo" slow-motion playback, and Dolby audio noise reduction. U-matic was named after the shape of the tape path when it was
U-matic
boom channels that utilized frequencies > 250 Hz. Encoding Dolby A-type NR (Noise Reduction) on prints meant that each of the six magnetic tracks had less
Megasound
American audio technology company
This is in contrast to noise reduction headphones, which hush ambient sounds by creating frequencies that minimize surrounding noise. However, like headphones
TV_Ears
Camera model
Processor. 2nd generation Translucent Mirror Technology. Multi-frame Noise Reduction. 19-point autofocus sensors with 11 cross type sensors. TTL phase-detection
Sony_Alpha_77
Theater standard and American audio company founded in 1983 by George Lucas
quality assurance system, not a recording technology. All sound recording formats, whether digital (Dolby Digital, DTS, SDDS) or analog (Dolby Stereo, Ultra
THX
2026 smartphone by Apple
The rear camera supports Smart HDR 5, spatial audio recording, wind noise reduction, audio zoom and audio mix. Both the front and rear cameras of the iPhone
IPhone_17e
Image processing engine for digital cameras
Recognition and an advanced noise reduction system which applies noise reduction (NR) to luminance noise and chromatic noise separately. This engine is
Venus_Engine
that it is metallic, more expensive, a higher build quality, and features noise cancelation, S-Master MX amp, NFC, Bluetooth with aptX, and a microphone
List_of_Sony_Walkman_products
Wide high-resolution film gauge
the Cinerama sound system was used. From 1976 onwards, many 70 mm prints used Dolby noise reduction on the magnetic tracks but Dolby disliked the "spread"
70_mm_film
Portable music player with tape recorders and radio with a carrying handle
technology and the introduction of stereo recording, chromium tapes, and Dolby noise reduction made hifi quality devices possible. Several European electronics
Boombox
Device for showing motion picture film
Dolby Digital always include an analog Dolby Stereo soundtrack with Dolby SR noise reduction, thus these prints are known as Dolby SR-D prints. Dolby
Movie_projector
1980s analog high-definition television standard
original test systems were recalled. One more power saving tweak was made: lack of visual response to low frequency noise allows significant reduction in transponder
Multiple Sub-Nyquist Sampling Encoding
Multiple_Sub-Nyquist_Sampling_Encoding
Smartphone by Nokia
of resolved detail. This also means that at full digital zoom, the noise reduction achieved by oversampling (pixel binning) is lost as no oversampling
Nokia_808_PureView
Digital representation of sampled analog signals
(similar to DBX Noise Reduction) to extend the dynamic range, and stored the signals on a video tape recorder. In 1969, NHK expanded the system's capabilities
Pulse-code_modulation
Optical analog video disc format
sound quality. Later analog discs also applied CX noise reduction, which improved the signal-to-noise ratio of the audio. DTS audio, when available on
LaserDisc
Method of sound reproduction using two audio channels
licensed to Dolby Labs from Sansui, this system can produce the same left, center, right and surround sound of the original CinemaScope system of 1953 by
Stereophonic_sound
digital audio over HDMI in several codecs including AAC, Dolby Digital, Dolby Digital Plus, Dolby TrueHD, DTS, DTS-HD Master Audio and LPCM at 44.1, 48,
PlayStation 3 technical specifications
PlayStation_3_technical_specifications
Soundtracks to the 1940 film Fantasia
surround sound system which innovated some processes widely used today, including simultaneous multitrack recording, overdubbing, and noise reduction. By July
Music_of_Fantasia_(1940_film)
2025 smartphone by Apple
the rear camera supports Smart HDR 5, spatial audio recording, wind noise reduction, audio zoom and audio mix. Both the front and rear cameras of the iPhone
IPhone_16e
Creative professional
accumulating excessive noise. At the height of magnetic recording, 200 tracks or more could be mixed together, aided by Dolby noise reduction. In the digital
Sound_editor_(filmmaking)
Scientific study of sound perception
nonlinear response is called loudness. Telephone networks and audio noise reduction systems make use of this fact by nonlinearly compressing data samples before
Psychoacoustics
is a line of smartphones developed by Apple that use the iOS operating system. Introduced by then-CEO Steve Jobs on January 9, 2007, the iPhone revolutionized
List_of_iPhone_models
Television audio encoding standard
manufactured to their specifications, outboard record electronics, and Dolby noise reduction that allowed Soundstage to be recorded and electronically edited
Multichannel_Television_Sound
Chemical compound
frequency range and noise also dropped the same amount, preserving the dynamic range, the decrease misaligned Dolby noise reduction decoders that were
Chromium(IV)_oxide
Electronic filter circuitry used in loudspeakers
distortion, bass enhancement, high frequency exciters, and noise reduction such as Dolby A noise reduction. The definition of an ideal audio crossover changes
Audio_crossover
analysis Distributed control system Distributed-element model Distributed generation Distribution board Distribution transformer Dolby Dot convention Doubly
Index of electrical engineering articles
Index_of_electrical_engineering_articles
Television lineup by OnePlus
quality. It also brings features such as adaptive contrast, random noise reduction, and ultra-smooth motion. With the new Y series, OnePlus has also introduced
OnePlus_TV
Home video game console by Sony
13, 2023, Sony released software update 8.00, which included support for Dolby Atmos, the possibility to use an M.2 SSD with a maximum capacity of 8 TB
PlayStation_5
Transmission of information electromagnetically
contained in analogue signals is degraded by undesirable noise. Commonly, the noise in a communication system can be expressed as adding or subtracting from the
Telecommunications
Home video game console by Sony
25, 2014. Retrieved June 25, 2014. "PS3 Slim gains ability to bitstream Dolby TrueHD, DTS-HD MA". Joystiq. August 21, 2009. Archived from the original
PlayStation_3
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DOLBY NOISE-REDUCTION-SYSTEM
DOLBY NOISE-REDUCTION-SYSTEM
Male
English
Variant spelling of English Colby, KOLBY means "coal settlement."
Male
Irish
Irish Gaelic name, of unknown NAOISE means. In Celtic mythology, this is the name of the warrior nephew of King Conchobar and beloved of Deirdre.
Male
English
Middle English form of French Moisé, MOISE means "drawn out."
Surname or Lastname
English
English : variant spelling of Boyce.
Girl/Female
Greek American English
A vision.
Surname or Lastname
English
English : habitational name from places in Norfolk and Cumbria named Colby, from the Old Norse personal name Koli (a byname for a swarthy person, from kol ‘(char)coal’) + Old Norse býr ‘settlement’.Variant spelling of Norwegian Kolby, a habitational name in Akershus, with the same etymology as 1.
Surname or Lastname
English
English : variant spelling of Noyce.
Female
French
Feminine form of French François, FRANÇOISE means "French."
Surname or Lastname
English or Scandinavian
English or Scandinavian : variant spelling of Dalby.
Surname or Lastname
English
English : probably a variant of Holtby.
Girl/Female
Assamese, Indian
Doly
Girl/Female
Australian, Nigerian
God will be Yours
Boy/Male
French
Forest.
Girl/Female
Australian, French, German
Renowned in Battle
Female
French
French form of Latin Elwisia, ÉLOISE means "hale-wide; very healthy and sound."Â
Female
English
Pet form of English Dorothy, DOLLY means "gift of God."
Male
Celtic
, snipe(?).
Girl/Female
English
Dark-skinned.
Girl/Female
Indian
Like doll
Boy/Male
Australian, Celtic, Irish
Mythical Name
DOLBY NOISE-REDUCTION-SYSTEM
DOLBY NOISE-REDUCTION-SYSTEM
DOLBY NOISE-REDUCTION-SYSTEM
DOLBY NOISE-REDUCTION-SYSTEM
DOLBY NOISE-REDUCTION-SYSTEM
DOLBY NOISE-REDUCTION-SYSTEM
DOLBY NOISE-REDUCTION-SYSTEM
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