Burr-Brown Unveils World's First Single-Chip HDCD Audio DAC.TUCSON, Ariz.--(BUSINESS WIRE)--July 9, 1999-- Burr-Brown Corporation (NASDAQ NASDAQ in full National Association of Securities Dealers Automated Quotations U.S. market for over-the-counter securities. Established in 1971 by the National Association of Securities Dealers (NASD), NASDAQ is an automated quotation system that reports on :BBRC BBRC Biochemical and Biophysical Research Communications BBRC Bellevue Breakfast Rotary Club (Washington state) BBRC Ball Brothers Research Corporation ) today announced the PCM (1) See phase change memory. (2) (Plug Compatible Manufacturer) An organization that makes a computer or electronic device that is compatible with an existing machine. 1732, the world's first single-chip HDCD (High Definition Compatible Digital) A digital processing technique that increases fidelity on audio CDs, developed by Keith Johnson and Michael "Pflash" Pflaumer. (High Definition Compatible Digital High Definition Compatible Digital, or HDCD is a patented encode-decode process, now under Microsoft, that improves the audio quality of standard Redbook audio CDs, while retaining backward compatibility with existing Compact disc players. ) audio digital-to-analog converter (DAC See D/A converter and discretionary access control. DAC - Digital to Analog Converter )--the culmination of a joint development between Burr-Brown and Pacific Microsonics, Inc. The PCM1732 combines HDCD decoding and precision digital filtering with Burr-Brown's high performance audio DAC technology into a single integrated circuit (IC). The PCM1732 targets a wide variety of high performance consumer audio applications such as CD and DVD players (home and car audio systems), as well as A/V receivers and surround-sound processors for home theater systems. "Pacific Microsonics is very excited about the PCM1732 because it is a key strategic component for increasing the penetration of HDCD in the general audio market. The superb price/performance of the PCM1732 enables audio manufacturers to feature HDCD decoding and filtering in a wide range of CD players, DVD players and A/V receivers," said Andy Johnson, vice president of marketing for Pacific Microsonics. HDCD encoded CDs offer improved sound because they are encoded with 20 bits of real musical information, as compared to 16 bits for all other CDs. HDCD provides more dynamic range, a more focused 3-D soundstage, and extremely natural vocal and musical timbre. HDCD recordings offer improved sound quality on any CD player, and when played on HDCD equipped players, they provide the ultimate in sonic fidelity by more accurately reproducing the body, depth, and emotion of the original performance. The HDCD digital filter also improves the sound quality of conventional CDs. The PCM1732 features Burr-Brown's newly developed "enhanced multi-level delta-sigma modulator" architecture that achieves high-grade audio dynamic performance and sound quality by providing a low noise floor, reduced out-of-band noise, low idle tones, and improved jitter performance. The internal HDCD digital filter operates at 8x oversampling Creating a more accurate digital representation of an analog signal. In order to work with real-world signals in the computer, analog signals are sampled some number of times per second (frequency) and converted into digital code. (96kHz) with a stopband A stopband is a band of frequencies, between specified limits, in which a circuit, such as a filter or telephone circuit, does not let signals through. Frequencies between the lower and upper limits are not transmitted. attenuation Loss of signal power in a transmission. Attenuation The reduction in level of a transmitted quantity as a function of a parameter, usually distance. It is applied mainly to acoustic or electromagnetic waves and is expressed as the ratio of power densities. of 120dB. Special functions of the PCM1732 include digital de-emphasis, left and right independent digital attenuation, soft mute, zero detect mute, zero flag, and reversible output phase. The PCM1732 accepts 16/20/24-bit input data formats and can be used with 256, 384, 512, or 768 fs system clocks. In addition, it processes 24 bits internally and has single-ended analog outputs, thus reducing the amount of external components required in an audio system. The device operates on a single +5V supply and is available in a 28-pin SO package. The PCM1732 is priced at $5.33 in 1,000 piece quantities. Manufacturers using the PCM1732 must be licensed by Pacific Microsonics and are required to submit a system for HDCD certification testing. About Pacific Microsonics Pacific Microsonics, Inc. is a California based audio technology licensing company. The Company develops and markets HDCD encoding products for the professional audio market, and HDCD decoding products for the consumer electronics OEM (Original Equipment Manufacturer) The rebranding of equipment and selling it. The term initially referred to the company that made the products (the "original" manufacturer), but eventually became widely used to refer to the organization that buys the products and market. Over 125 million HDCD CDs have been shipped to date and over 100 HDCD equipped CD and DVD player products are now available from such top audio manufacturers as Denon, Harman Kardon, Kenwood, Linn, Madrigal (Mark Levinson), Toshiba, and Rotel. For more information, visit http://www.hdcd.com. About Burr-Brown Burr-Brown Corporation is a worldwide leader in the development, manufacturing and marketing of precision linear, data conversion and mixed signal integrated circuits. These products address applications in communications, industrial control, instrumentation, consumer electronics, and personal computer systems. For product information, visit http://www.burr-brown.com/. For additional information, call Joe Engle at 800/548-6132 or e-mail engle_joe@burr-brown.com. |
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