mary ann seidler - audio compression
DESCRIPTION
Mary Ann Seidler's pitch about the advantages of using uncompressed audio for STL's at the annual IEEE symposium in Washington http://ow.ly/i/12XbtTRANSCRIPT
- 1.Audio Compression:Are we squeezing the life out of radio? Mary Ann SeidlerElenos USAHerb SquireWelcome! www.elenos.com
2. 1990s MPEG standards introduced Mid 1990s Cascading testsperformed.www.elenos.com 3. ISO-MPEG Compression Guidelines Bit Rate Number of Transcodings 384 kb/s10 256 kb/s 5 192 kb/s 2 128 kb/s 1 www.elenos.com 4. Why is cascading such a problem for these algorithms?www.elenos.com 5. MPEG codecs are perceptual www.elenos.com 6. Source material is often pre-compressed Music Commercials Voice overs Sound effects www.elenos.com 7. Where do we have some control? Audio codecs Smart phones Smart phone apps Remotes Automation systems Satellite feeds Remote studios STL links www.elenos.com 8. NewsSource NewsRemotesBureau News SatelliteRADIO STATION Advertising AutomationAgency Voice overs STL Transmitterwww.elenos.com 9. Example of a compression chain 128k128k 256k256k 256k MP3L2L2MP2MP3 NewsNews RadiobureauSatelliteAutomationSTLTransmittersource Station www.elenos.com 10. Look (or even betterlisten) to what theyve done to my song, Mawww.elenos.com 11. The Curse of the Cascading CodecsWill we soon need warning labels?www.elenos.com 12. Yes, we careBut does anyone else?www.elenos.com 13. www.elenos.com 14. HTC recently purchased Dr. Dres company for$30 million dolllars. Someone is putting their money on $$ for audioqualitywww.elenos.com 15. www.elenos.com 16. Young people prefer quality audioSurvey results from Sean Olive,Director of Acoustic Research Harman International, 2011 www.elenos.com 17. Why should audio quality matter to us in radio?www.elenos.com 18. Why should audio quality matter to us in radio?Weve come from thiswww.elenos.com 19. Why should audio quality matter to us in radio? to thiswww.elenos.com 20. Its just too easy to turn us offwww.elenos.com 21. So what can we do?Here are four suggestions: www.elenos.com 22. Draw up a plan www.elenos.com 23. Test your audio chainwww.elenos.com 24. Insist on higher bit rates 128k 128k 256k256k 256k MP3 L2L2MP2MP3 NewsNewsRadiobureau SatelliteAutomationSTLTransmittersourceStationwww.elenos.com 25. Minimize compression in STLswww.elenos.com 26. For more information, contact me: [email protected] 27. Thank you! www.elenos.com