Test System: TW/150, No Cache MacBench Version: MacBench™ v2.0 Name: Organization: Test Date: Monday, October 16, 1995 4:07:03 PM Test Name Result Units Processor Tests: Processor: 55.29 score Floating Point Tests: Floating Point: 182.07 score Disk Tests: Disk Mix: 11.67 score Seq Read 1K: 416.30 kilobytes/sec Seq Read 8K: 1886.03 kilobytes/sec Seq Read 16K: 3523.40 kilobytes/sec Seq Read 32K: 4951.48 kilobytes/sec Seq Read 128K: 5014.41 kilobytes/sec Random Read 1K: 82.67 kilobytes/sec Random Read 8K: 553.87 kilobytes/sec Random Read 16K: 1068.28 kilobytes/sec Random Read 32K: 1756.85 kilobytes/sec Random Read 128K: 3409.17 kilobytes/sec Seq Write 1K: 974.17 kilobytes/sec Seq Write 8K: 1290.60 kilobytes/sec Seq Write 16K: 1106.71 kilobytes/sec Seq Write 32K: 1801.05 kilobytes/sec Seq Write 128K: 3445.23 kilobytes/sec Random Write 1K: 99.61 kilobytes/sec Random Write 8K: 530.44 kilobytes/sec Random Write 16K: 977.23 kilobytes/sec Random Write 32K: 1660.60 kilobytes/sec Random Write 128K: 3302.74 kilobytes/sec Seq Rd 128K: Test not run CD-ROM Tests: CD-ROM Mix: Test not run CD Seq Read 1K: Test not run CD Seq Read 8K: Test not run CD Seq Read 16K: Test not run CD Seq Read 32K: Test not run CD Seq Read 128K: Test not run CD Ran Read 1K: Test not run CD Ran Read 8K: Test not run CD Ran Read 16K: Test not run CD Ran Read 32K: Test not run CD Ran Read 128K: Test not run Video Tests: Video Mix: 24.75 score Arcs: 11776.90 kilopixels/sec Arc Erase: 13634.47 kilopixels/sec Arc Fill: 13886.83 kilopixels/sec Arc Frame: 150.46 kilopixels/sec Arc Invert: 14065.42 kilopixels/sec Arc Paint: 14283.68 kilopixels/sec CopyBits: 8440.40 kilopixels/sec CB Small Copy: 1731.74 kilopixels/sec CB Small Inverse: 788.02 kilopixels/sec CB Small Mixed: 1674.97 kilopixels/sec CB Small Scaled: 2742.92 kilopixels/sec CB Large Copy: 18920.67 kilopixels/sec CB Large Inverse: 9063.55 kilopixels/sec CB Large Mixed: 13926.03 kilopixels/sec CB Large Scaled: 1957.04 kilopixels/sec CB Scroll Rect: 35648.47 kilopixels/sec Lines: 1380.99 kilopixels/sec Line Horizontal: 1520.25 kilopixels/sec Line Vertical: 1310.69 kilopixels/sec Line Diagonal: 1044.51 kilopixels/sec Ovals: 41837.48 kilopixels/sec Oval Erase: 48257.97 kilopixels/sec Oval Fill: 47438.65 kilopixels/sec Oval Frame: 472.69 kilopixels/sec Oval Invert: 42269.49 kilopixels/sec Oval Paint: 49606.77 kilopixels/sec Pictures: 1036.00 kilopixels/sec PICT Small: 284.82 kilopixels/sec PICT Large: 1289.35 kilopixels/sec PICT Scaled: 1372.70 kilopixels/sec Polygons: 7985.95 kilopixels/sec Polygon Erase: 11463.59 kilopixels/sec Pol…

Test System: TW/150, 512K Cache MacBench Version: MacBench™ v2.0 Name: Organization: Test Date: Monday, October 16, 1995 3:05:44 PM Test Name Result Units Processor Tests: Processor: 69.69 score Floating Point Tests: Floating Point: 192.37 score Disk Tests: Disk Mix: 15.39 score Seq Read 1K: 614.41 kilobytes/sec Seq Read 8K: 2531.62 kilobytes/sec Seq Read 16K: 4402.94 kilobytes/sec Seq Read 32K: 5004.79 kilobytes/sec Seq Read 128K: 5004.90 kilobytes/sec Random Read 1K: 89.82 kilobytes/sec Random Read 8K: 611.35 kilobytes/sec Random Read 16K: 1154.81 kilobytes/sec Random Read 32K: 1854.49 kilobytes/sec Random Read 128K: 3524.07 kilobytes/sec Seq Write 1K: 1254.75 kilobytes/sec Seq Write 8K: 1748.94 kilobytes/sec Seq Write 16K: 1108.25 kilobytes/sec Seq Write 32K: 1815.96 kilobytes/sec Seq Write 128K: 3476.40 kilobytes/sec Random Write 1K: 111.90 kilobytes/sec Random Write 8K: 550.68 kilobytes/sec Random Write 16K: 1042.80 kilobytes/sec Random Write 32K: 1767.01 kilobytes/sec Random Write 128K: 3392.80 kilobytes/sec Seq Rd 128K: Test not run CD-ROM Tests: CD-ROM Mix: 23.07 score CD Seq Read 1K: 578.92 kilobytes/sec CD Seq Read 8K: 580.81 kilobytes/sec CD Seq Read 16K: 573.49 kilobytes/sec CD Seq Read 32K: 563.71 kilobytes/sec CD Seq Read 128K: 579.56 kilobytes/sec CD Ran Read 1K: Test not run CD Ran Read 8K: 24.56 kilobytes/sec CD Ran Read 16K: 49.70 kilobytes/sec CD Ran Read 32K: 87.31 kilobytes/sec CD Ran Read 128K: Test not run Video Tests: Video Mix: 38.82 score Arcs: 15485.53 kilopixels/sec Arc Erase: 18247.34 kilopixels/sec Arc Fill: 18396.49 kilopixels/sec Arc Frame: 179.64 kilopixels/sec Arc Invert: 18268.33 kilopixels/sec Arc Paint: 18476.47 kilopixels/sec CopyBits: 12625.29 kilopixels/sec CB Small Copy: 3281.37 kilopixels/sec CB Small Inverse: 1127.86 kilopixels/sec CB Small Mixed: 3131.60 kilopixels/sec CB Small Scaled: 2883.76 kilopixels/sec CB Large Copy: 22052.06 kilopixels/sec CB Large Inverse: 10065.89 kilopixels/sec CB Large Mixed: 15745.78 kilopixels/sec CB Large Scaled: 2075.06 kilopixels/sec CB Scroll Rect: 46120.91 kilopixels/sec Lines: 2469.88 kilopixels/sec Line Horizontal: 2828.05 kilopixels/sec Line Vertical: 2242.07 kilopixels/sec Line Diagonal: 1781.60 kilopixels/sec Ovals: 51662.25 kilopixels/sec Oval Erase: 61293.00 kilopixels/sec Oval Fill: 59779.08 kilopixels/sec Oval Frame: 541.80 kilopixels/sec Oval Invert: 50182.65 kilopixels/sec Oval Paint: 61971.16 kilopixels/sec Pictures: 1185.81 kilopixels/sec PICT Small: 405.96 kilopixels/sec PICT Large: 1399.42 kilopixels/sec PICT Scaled: 1460.20 kilopixels/sec Pol…

PW/DOC/HYBRID MANUAL final 2/4/ 2/27/98 10:53 AM Page 1 PW/DOC/HYBRID MANUAL final 2/4/ 2/27/98 10:53 AM Page 1 ■ Credits ■ ■ ■ ■ Programming Team Lori Carson, Engineering Director Bob Lee, Lead Programmer Claire Schendel, Michael Kelson, Lance Wilson, Steven Bockman, Brad Nelson Product Management Gary Heyman, Mary Eaves, Tom Leach, Product Managers Priscilla Coe, Melanie Stamps, Yvonne Balaguy-Hoopes, Axil Comras, Peggy Giampaoli, Keith Jordan, Bobbi Keene, Wade Person, Clifford Rosney, Cindy Tapp, Joanna Witzel, Richard Whittaker, Harry Wilker Art Department Joe Sikoryak, Senior Art Director Marcus Badgley, Art Director Carolyn McDonald, Graphics Coordinator Lydia Haggerty, Lead Illustrator Harlen Mallis, Technical Coordinator Sasha Verhage, Jerome Carolfi, Eric Curtis, Annie Danberg, Reggie Daniger, John Hartong, Jeff Hunter, Brian Lobsinger, Jacqui Lumer, Steven Powell, Austin Putnam, Dan Simmons, Leifur Thor, Stephanie Wong. Installer Team Kent Daniels, Fred Campbell, Robert Noska Quality Assurance Rodrigo Silveira, Quality Assurance Manager Diane Taber, Don Tyler, Quality Assurance Leads Kirk Roulston, Mike Taber, Anne Sete, Russell Lichter, Eric Culver, Ken Piper, Barry Burris, Kris Wallace, Chad Austin, Linda Frazier, Tim Innes, Jeff Zemrak, Eric Wilder, Jon Yamoto, Julie Thiel, Heidi Williams, Steve Winter, John Spitta, Cathy Thom, Keyki Bavand, Barbara Walsh Design Services David Kessler, Vice President and Creative Director Nancy Bulette, Design Services Manager Ronni Valenti, Package Design Nicole Martino, Steve Dolan, Jennifer Cherk, Teddi John, Kara Adanalian Judy Ringseis, Graphics Reference Book The Myriad Group, Graphics Reference Book Sound Department Ralph Marsh, Sound Director Gary Schwantes, Original Music and Sound Design Brian Walker, Gary Schwantes, Dialog Editors Jenean Estigoy, Casting Musicians: Chris Clanin, Derek Jones, Tim Larkin, Bob Logan, Ralph Marsh, Greg Rahn, Gary Schwantes FranZine, Narration Internet Access (Windows version) T…

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QDesign Music A quick analysis by Benjamin Larsson e-mail: banan@student.luth.se Version 1.2 14th January 2004 Contents 1 Abstract 3 2 Introduction 3 3 Test of QDM2 3 4 Assumptions 3 5 Facts 7 5.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5.2 Blocktable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5.3 Packet table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5.4 Bitstream . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5.4.1 Checksum calculation routine . . . . . . . . . . . . . . . . 8 5.4.2 Structure decoding . . . . . . . . . . . . . . . . . . . . . . 9 5.4.3 Bitstream terminator . . . . . . . . . . . . . . . . . . . . 9 5.5 Sound resynthesis . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5.6 Decoding procedure . . . . . . . . . . . . . . . . . . . . . . . . . 9 6 Further Progress 10 7 Comments 10 8 Version History 10 9 References 10 10 Hexdump of packets 10 10.1 11025 Hz 24 kbit mono white noise . . . . . . . . . . . . . . . . . 11 10.2 11025 Hz 24 kbit mono silence . . . . . . . . . . . . . . . . . . . 11 2 1 Abstract This is an initial analysis of QDesigns audiocodecs QDMC and QDM2 (QDM aka QDesign Music). The goal is to eventually understand the structure of the codecs and finally be able to decode it. 2 Introduction QDMC is an audio compression-codec from QDesign. It is mainly used in Quick- time [2] from Apple. So far very little is(was) known about this codec. It seams to originally come from Dmitry Shmunk’s LB codec. (Low bitrate codec). He was abit active on usenet 96-97, he made the LBpack/LBplay media player. From the history in one of the version of his mediaplayer [4], there is a note of using a Radix-4 FFT implementaion in the player. No other useful information could be found about the technique used for the codec. The only other source of information seams to be from QDesign themself from their pressreleases [1]. The only valuable information from those is that QDMC is a perceptual co- dec. That indicating a propritary psycoacoustics implementation. Although the pressrelease for QDMC says it is fundamentally different f…