Copyright © Philip M. Parker, INSEAD. Terms of Use.
| Domain | Definition |
Computing | Digital audio |
Source: compiled by the editor from various references; see credits. | |
(From Wikipedia, the free Encyclopedia)
The most common method of creating digital audio is Pulse-code modulation (PCM). PCM digital audio is typically sampled at 44.1 kHz (for CD recordings) or 48 kHz (for professional audio applications). For comparison, speech signals for telephony are only sampled at 8 kHz. Higher sample rates for professional recording are becoming popular. These include 88.2 kHz, 96 kHz, and 192 kHz.
The amplitude of each sample is a numeric value that is represented by a certian number of bits. The more bits that are used to represent the amplitude, the greater the dynamic range that can be represented, with each bit providing a gain of approximately 6 dB. The dynamic range of 16 bit digital audio is therefore aproximatly 96 dB, whereas the dynamic range of 24 bit digital audio is 144 dB. 8 bit digital audio has a dynamic range of approximatly 48 dB.
The amount of data created by digital audio is quite large. 16 bits per sample at 44.1kHz creates 705600 bits per second. Thus for a stereo recording, there will 10MB per minute. 24 bit, 96kHz digital audio has a bit rate of 2304000 bits per second, or 33MB per minute for stereo.
Another method of creating a digital representaion of the audio wavefrom is Direct Stream Digital or DSD. The Super audio compact disc uses this format.
Since digital audio, unlike analog audio, is always accompanied implicitly or explicitly by a sample clock, synchronization is a crucial consideration in digital audio systems. This is usually accomplished by genlocking all the systems in a facility to a single master audio clock. Plesiochronous operation is not advisable, as it tends to result in widespread hard-to-debug problems.
Digital audio technologies:
Source: adapted by the editor from Wikipedia, the free encyclopedia under a copyleft GNU Free Documentation License (GFDL) from the article "Digital audio."
Crosswords: DIGITAL AUDIO |
| Specialty definitions using "DIGITAL AUDIO": Audio IFF ♦ Digital Audio Tape ♦ hardware circular buffer ♦ main service channel, MPEG-1 audio layer 3, multichannel audio digital interface, multi-channel audio digital interface ♦ Nyquist Theorem ♦ Pulse Code Modulation ♦ receiver data interface ♦ time-delay. (references) |
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Source: compiled by the editor from various references; see credits. | |||
Expressions using "DIGITAL AUDIO": digital audio broadcasting ♦ digital audio stationary head ♦ digital Audio Tape ♦ terrestrial digital audio broadcasting. Additional references. | |
| Source: compiled by the editor from various references; see credits. |
| The following statistics estimate the number of searches per day across the major English-language search engines as identified by various trade publications. Hyperlinks lead to commercial use of the expression at Amazon.com. |
| Language | Translations for "DIGITAL AUDIO"; alternative meanings/domain in parentheses. | ||||||||||||||||||||||
Danish | digital audiodisc (digital audio disc), jordbaseret digital lydtransmission (terrestrial digital audio broadcasting). (various references) | ||||||||||||||||||||||
Dutch | digitale audiotape (digital audio tape), DAT (that, that ... over there, that one, that one over there, that over there, those, what, which, who, yonder), terrestrial digital audio broadcasting (terrestrial digital audio broadcasting), T-DAB (terrestrial digital audio broadcasting), CD-plaatje (digital audio disc). (various references) | ||||||||||||||||||||||
Finnish | digitaalinen audiolevy (digital audio disc), digitaalinen äänilevy (digital audio disc), terrestrinen digitaalinen ääniradiolähetys (T-DAB, terrestrial digital audio broadcasting), maanpäällinen digitaalinen ääniradiolähetys (T-DAB, terrestrial digital audio broadcasting). (various references) | ||||||||||||||||||||||
French | disque numérique audio (digital audio disc), DASH (digital audio stationary head), DAB (cash dispenser, digital audio broadcasting), terrestrial digital audio broadcasting (terrestrial digital audio broadcasting), T-DAB (terrestrial digital audio broadcasting), radiodiffusion sonore numérique (digital audio broadcasting), radiodiffusion audionumérique (digital audio broadcasting), format DASH (digital audio stationary head), enregistrement magnétique numérique sur bande (digital audio tape), enregistrement audio numérique longitudinal (digital audio stationary head), cassette audionumérique (digital audio tape), bande audionumérique (digital audio tape), BAN (digital audio tape). (various references) | ||||||||||||||||||||||
German | Digitalschallplatte (digital audio disc), terrestrischer digitaler Audio-Rundfunk (T-DAB, terrestrial digital audio broadcasting), T-DAB (T-DAB, terrestrial digital audio broadcasting), Kompaktdisk (digital audio disc), CD (cd). (various references) | ||||||||||||||||||||||
Greek | ψηφιακός δίσκος (digital audio disc), CD (CD, compact disk). (various references) | ||||||||||||||||||||||
Italian | disco sonoro digitale (digital audio disc), Digital Audio Broadcasting (Digital Audio Broadcasting system), DAB (Digital Audio Broadcasting system), T-DAB (T-DAB, terrestrial digital audio broadcasting), radiodiffusione audio digitale terrestre (T-DAB, terrestrial digital audio broadcasting). (various references) | ||||||||||||||||||||||
Japanese Kanji | デオã‚ã‚·ãƒªãƒœæ ¸é…¸ (10^-1, carving, crepe de Chine, cutting up, decadence, decadent, decadentism, decanter, deci-, decibel, decimal, decimal point, decision, decision making, decision room, declamation, decode, decoder, decoding, decompiler, decorated cake, decoration, decoy, decrement, decrescendo, degree, deodorant, deoxyribo, deoxyribo nucleic acid, desert, design, design policy, design promoter, designer, designer brand, design-in, desire, dessert, dessert wine, digital, digital analog, digital art, digital audio tape recorder, digital computer, digital speedometer, digital television, Dixie, Dixieland, Dixieland jazz, fancy cake, low status, low-cut, transfer). (various references) | ||||||||||||||||||||||
Japanese Katakana | デジタルオーディオテープレコーダー (digital audio tape recorder). (various references) | ||||||||||||||||||||||
Pig Latin | igitalday audioay disco audio digital (digital audio disc), T-DAB (T-DAB, terrestrial digital audio broadcasting), radiodifusão áudio digital terrestre (T-DAB, terrestrial digital audio broadcasting). (various references) disco digital de audio (digital audio disc), T-DAB (T-DAB, terrestrial digital audio broadcasting), radiodifusión sonora terrenal digital (T-DAB, terrestrial digital audio broadcasting). (various references) T-DAB (T-DAB, terrestrial digital audio broadcasting), markbunden digital rundradio (T-DAB, terrestrial digital audio broadcasting), markbunden digital ljudrundradio (T-DAB, terrestrial digital audio broadcasting), cd-skiva (cd), cd (Democratic Republic of the Congo, digital audio disc). (various references) | ||||||||||||||||||||||
Scrabble® Enable2K-Verified Anagrams | |
| Words within the letters "a-a-d-d-g-i-i-i-l-o-t-u" | |
-5 letters: agatoid, digital, otalgia, outlaid. | |
| Source: compiled by the editor from various references; see credits. SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. | |
| 1. Crosswords 2. Usage: Commercial 3. Expressions 4. Expressions: Internet | 5. Translations: Modern 6. Anagrams 7. Bibliography |
Copyright © Philip M. Parker, INSEAD. Terms of Use.
