Today in music history
In 1983, Sony and Philips introduced their jointly developed compact disc system. The CD is a digital medium in which sound waves are replicated as a series of binary numbers on the 12-centimetre disc. A laser in the CD player reads the digital information, which is then translated into sound. In contrast, vinyl records were traditionally recorded using analogue technology, which replicates sound waves in the grooves of a record. The sound is transmitted through a needle vibrating in a groove via a cartridge to an amplifier. The major advantage of digital recording over analogue is that it eliminates extraneous noise. In analogue recording, a noise-reduction mechanism is needed to minimize hisses and crackles. At a 1980 demonstration of the new product, renowned conductor Herbert von Karajan declared that “all else is gaslight.” Eckhardt-Gramatté Hall, 8 p.m. Pianist playing Handel, Czerny, Chopin and Schubert. Tickets $15 and $33 at 204-786-9000. Martha Wainwright West End Cultural Centre, 8 p.m. Tickets $25 advance, $30 door or at jazzwinnipeg.com, and 204-989-4656. GroundSwell: Aventa 8 p.m. Convocation Hall, University of Winnipeg. Tickets $5 to $19 at the door
New York’s David Baskeyfield plays the Westminster Organ Concert
Series tomorrow at 2:30 p.m. Tickets are $25 at the door.