Compact Recording
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Crosley CR66 the Rochester compact home entertainment center record player CD + $49.99 |
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BlackStar HT-1RH, 1W Tube Guitar Amp Head, Recording, Super Tone, Compact $229.99 |
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Campagnolo Record Compact Chainring 50T for 36T $114.91 |
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Campagnolo Record Compact Chainring 50T for 34T $114.91 |
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Corey Smith – Broken Record (2011) – New – Compact Disc $13.61 |
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Ray Charles Portrait Of ABC Jukebox Compact 33 RPM MINI LP RECORD SCARCE SEE $9.99 |
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Audio Key- The Record, Tape ; Compact Disc Guide: CD ; Pop Edition $5.00 |
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ELVIS PRESLEY RARE RECORD COMPACT DOUBLE 33 ELVIS BY REQUEST LPC 128 $18.88 |
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Neil Young – Decade (A 3-Record Set On 2 Compact Discs) $14.79 |
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Mark Ronson – Record Collection (2010) – Used – Compact $5.44 |
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Campagnolo Record Compact Chainring 36T $110.99 |
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Campagnolo 2007 Record Compact 170 x 50 x34 Ultra Torque chainwheel set (NIB) $300.00 |
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**NEW** Just For The Record… by BARBRA STREISAND 4 Compact Discs CDs w/BOX $29.95 |
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Belwin String Builder Accompaniment Recordings, Book 1 (1993, Compact Disc) $2.99 |
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Campagnolo FC-RE250 10S CT 50T F/34 110MM RECORD ULTRA TORQUE COMPACT $133.83 |
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Rolling Stones – Exile on Main Street – Austria 2 – Record Set On 1 Compact Disc $16.99 |
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Sony CDP-CE500 Compact 5 Disc Player Changer Black USB Record and Play $62.99 |
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The Norton Recordings to Accompany the Enjoyment of Music (1999, Compact Disc) $2.99 |
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Sassy & Bessie A-Live At The Paradise Lounge/Original Cast Recording (COMPACT DI $5.75 |
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Campagnolo FC-RE350 10S CT 50T F/36 110MM RECORD ULTRA-TORQUE COMPACT $123.31 |
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VA – Twitch Recordings Compact Disc 5 CD $8.99 |
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THE JACKIE WILSON STORY/ 2 RECORD SET ON 1 COMPACT DISC/ SHIPS FREE $27.55 |
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FRANKIE CARLE THE GOLDEN TOUCH RARE RCA COMPACT 33 EP 45 RPM RECORD $0.99 |
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High Definition Compact Disc Recordings. – Ferstler $135.24 |
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SONY HVR-MRC1K Compact Flash Memory Recording Unit for HDV DVCAM DV $668.00 |
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Campagnolo Record Compact Chainring 48T for 34T $162.00 |
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Campagnolo Record Compact Chainring 36T $99.00 |
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Campagnolo Record Compact Chainring 50T for 34T $154.80 |
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Campagnolo Record Compact Chainring 50T for 36T $144.00 |
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Campagnolo Record Compact Chainring 34T $97.65 |
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RARE !!! ELVIS PRESLEY COMPACT 33 “WILD IN THE COUNTRY” SLEEVE WITH RECORD !! $525.00 |
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RARE !!! ELVIS PRESLEY “HIS LATEST FLAME” COMPACT 33 RECORD WITH SLEEVE !!! $575.00 |
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Campy Super Record 11 Compact Carbon Crankset $102.50 |
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Mackie 802-VLZ3 8-Channel Compact Recording/SR Mixer $199.99 |
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Mackie 1202-VLZ3 12-Channel Compact Recording/SR Mixer $269.99 |
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Mackie 1402-VLZ3 14-Channel Compact Recording/SR Mixer $399.99 |
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VIRNA LINDT Play/Record – In London UK Compact Records LP $11.05 |
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Bouncing Souls – Gold Record (2006) – Used – Compact Di $2.50 |
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Perry Como – Golden Recordings (2011) – New – Compact D $2.56 |
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Elvis – Imeless Live Recordings (2011) – New – Compact $2.56 |
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Campagnolo Record 10s Compact (CT) Chainring 46T $92.00 |
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CAMPAGNOLO RECORD 10 SPEED ROAD ALLOY CT COMPACT CHAINRING 110 X 34t – NEW $85.50 |
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RØDE NT5-MP Compact Pair Instrument Recording Mics $429.00 |
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The Beatles – Meet the Beatles! – Very rare Capitol 33 Compact vinyl record! $99.95 |
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Pro Tools Mbox Mini Compact Pro Tools Personal Recording Studio $0.99 |
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Sony VRDMC6 DVDirect Compact Size DVD Burner with AVCHD Recording $6.50 |
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Sterling Compact Cassette C-120 Magnetic Recording Tape Cartridge Vintage $2.98 |
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BUTCH HANCOCK-Own & Own-1978-1989 Recordings-Sugar Hill-Excellent Compact Disc! $4.99 |
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JIMMY JOHNSON-I’m a Jockey-Chicago Blues Record-SUPERB Condition Compact Disc!! $4.99 |
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classical russia revelation otkpbithe classic music 1996 compact disc recording $4.79 |
Inside the Compact Disc
Everyone has seen a Compact Disc, heard music played from one, or used one to store files digitally. Not many people know how they work though. The CD is a modern marvel of science that is a true testament to the tenacity of the human spirit and ingenuity.
Creating a Compact Disc is also a more involved process than many people realize. The data is recorded onto the disc in microscopic increments which means that during production, even the smallest particles of dust will cause the recordings to be corrupted. The manufacturing process must be very accurate and precise because there is no room for error.
Turning Binary into Sound
The first challenge was developing the disc itself. Optical discs must be able to contain huge amounts of data because it takes around a million bits to playback one second of music. Fortunately, one million bits on a Compact Disc is about the size of the head of a pin. This made optical discs the ideal way to store the data for later retrieval. Another challenge was inventing a way to read back all of the compressed information on the CD fast enough to play back sound continuously, which was made possible by integrated circuit technology.
When a new audio CD is needed, a glass master must be created first. It is inspected carefully for quality assurance because a flawless master is what is really needed to manufacture good replicas. Once the glass master is finished, a stamper is created that is loaded into an injection molding machine, where the actual replicates are created. Through every step of the manufacturing process, quality and precision must be solidly maintained at the risk of creating waste.
A Compact Disc plays the sounds back in a system of groves laid out in a spiral over the surface of the disc. When the laser from the CD player moves along the spiral, it will encounter “pits” and “lands” that cause the laser to be reflected back at various intensities to the reader. The computer inside the CD player interprets this data as sound. Using this method eliminates the “fuzz” that you might hear on some older audio recordings, making CD’s one of the most high quality audio formats around to this day.
Alternate Methods
The original formats laid out in the Red Book created by Sony and Philips were eventually discarded by many in order to produce audio CDs that were in excess of 79.8 minutes and in order to allow for digital rights management (DRM). Over the years compact discs have become available in 74, 80, 90, and 99 minute versions. The 80 minute CD (which is actually 79.8 minutes) is currently the standard size. However, the more music a compact disc can hold, the tighter its spiral must be (which allows for more playback). Not all CD players can handle the tighter spirals, especially the older CD players that existed before the higher capacity discs hit the market. Eventually though, manufacturers updated their products and now you are much less likely to have problems playing 80 minute discs. The 99 minute discs are another story though. Your best bet is to avoid them.
About the Author
Audible Forensics provides forensic audio and audio transfer services. If you would like to transfer tape to CD or are interested in speech enhancement services – visit our website by clicking on the links.
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MAGIX Samplitude 11 Producer – The compact studio for musicians (english)