17:55:43 From Greg Dixon : https://we.tl/t-VwIbzGCh94 17:56:02 From Greg Dixon : ^ j.j.'s demo files 17:56:17 From Jamie Angus (she/her) : Hello Everyone 2am here in York UK! 17:57:08 From Greg Dixon : https://we.tl/t-VwIbzGCh94 17:57:19 From Greg Dixon : ^ j.j.'s demo files again 17:57:21 From Steve Turnidge : Hi Jamie! 17:57:40 From Steve Savanyu : Hi all from Snowy Ohio... 17:57:54 From Bob Smith : The demonstration wavefiles are small and very much worth your while to download and audition on headphones. 17:58:14 From Rick Lambright : Hi everyone from Rancho Mirage, California (Palm Springs area)! 17:58:39 From Greg Dixon : https://we.tl/t-VwIbzGCh94 17:59:35 From Rob Maher [Bozeman, MT] : Best wishes to all from Montana, USA! 18:00:20 From Lou Judson : Hello form Marin County CA. I’m just here to lurk and learn. The link worked for me! 18:00:38 From Jamie Angus (she/her) : Hi Rob! 18:01:04 From Mike Swanson : Can you put the link in the chat? So we can copy/paste? 18:01:11 From Greg Dixon : https://we.tl/t-VwIbzGCh94 18:01:16 From Mike Swanson : Thanks! 18:02:52 From Harold LaRue : Hi, All, from Space City! 18:03:32 From Pete Eggebrecht : Hello from St.Louis, Mo 18:04:33 From Joe Carter : Joe Carter from Spring Hill, TN - 30 miles south of Nashville. 18:04:56 From Greg Dixon : gregdixonmusic@gmail.com 18:06:26 From Steve Turnidge : Hi Everybody! 18:11:09 From Gary Gottlieb : hi from Ukiah, California 18:11:30 From Rick Chinn - AES-PNW : hi GG 18:12:06 From Greg Dixon : https://we.tl/t-VwIbzGCh94 <--- this is the link to j.j.'s audio demos for the presentation if you haven't gotten them already. Download and unzip 18:12:06 From Jamie Angus (she/her) : Hi Gary G 18:12:20 From Erick Sheldon : Hello from Michigan! Thank you @jj for inviting members of ASR to your presentation! 18:15:44 From Gary Louie AES PNW Secretary : jj's past talk on Hearing 099: https://www.aes-media.org/sections/pnw/pnwrecaps/2019/apr2019/index.htm 18:17:18 From Jamie Angus (she/her) : Equivalent to the Noise Bandwidth in electronic circuits. IIRC 18:21:09 From Greg Dixon : https://we.tl/t-VwIbzGCh94 this is the link to the files 18:23:13 From Bob Smith : Should view these plots while listening to the demos. 18:24:31 From Gary Gottlieb : hi Jamie, nice to see you here 18:25:30 From Rick Chinn - AES-PNW : files that jj is talking about can be found at: 18:25:36 From Rick Chinn - AES-PNW : https://www.aes-media.org/sections/pnw/pnwrecaps/2022/jan2022/ 18:34:51 From Dan Mortensen : Are these files exactly the same as the ones that were earlier on jj’s website? 18:36:11 From Gary Louie AES PNW Secretary : Rick speaks of graphics of the graphs of those sound files, I believe. The audio files are still on jj's WeTransfer site. 18:37:11 From Greg Dixon : again here's the link to j.j.'s examples for this meeting: https://we.tl/t-VwIbzGCh94 Download and unzip to access the .wav files 18:37:18 From Gary Louie AES PNW Secretary : Actually, it looks like Rick points to all of the files including the PPTX! 18:37:34 From Rick Chinn - AES-PNW : the audio files and the jpgs of the spectral photos of the files are at the URL. The audio files are the ones from jj’s link, the jpgs are the most recent that I received. 18:38:43 From Rick Chinn - AES-PNW : I just added the audio files, so it’s a one-stop shoppe. 18:42:11 From Bob Smith : the side lobes on the impulse response look to be a little different between inphase and outphase. 18:44:47 From Jamie Angus (she/her) : Different singers different vibratos, or the same singer recorded at different speeds as in multi tracking? Makes them unmasked 18:47:15 From Derrick Pierce : What happens when you are at crossover between two drivers or listening to an array of drivers playing the same spectrum at the same time? 18:47:21 From Jamie Angus (she/her) : Singers actually alter their spectra to become unmasked wrt to the backing instruments. 18:48:36 From Jerry Jensen : More comments on the effects of aging on the ability to separate one voice in a crowded room? 18:49:07 From Greg Dixon : Would amplitude modulation of one of the masked signals help unmask it? and if so does the frequency of the amplitude modulation have to be a high enough freq. to actually have this work? 18:50:01 From Greg Dixon : that means don't modulate faster than 20 Hz 18:50:04 From Jamie Angus (she/her) : I think sometimes your ERBs get wider too especially in the presbyacusis range 18:51:20 From Greg Dixon : Dr. Mike, can you share what work this is? 18:52:11 From Alex Zuchotzki : are audio codecs and their handling of masking optimized mostly for headphones, or is there also speaker testing? 18:52:47 From Stephen Clarke-Willson : I'll admit I watch American Idol sometimes. And sometimes the contestant's audio gets lost behind the backup singers. I figured it was mixed poorly but now I'm thinking that perhaps the audio engineer's dials look great, but if the contestant doesn't lead the background singers a bit in time, maybe the backup singers mask the contestant? I imagine professional singers know to lead the background singers? 18:54:21 From Mike Matesky : Thanks for addressing the question. I feared getting into localization, miking, etc. was silly beyond our time constraint. However, clear perception of both instruments w/o issues should be achievable. Still…momentary masking is something I’ll be eyeballing. 18:54:32 From Jamie Angus (she/her) : Apparently if you sing a steady tone in reverb (no vibrato) after a while the reverb becomes masked, you can’t hear it. 18:55:04 From Mike Matesky : Re Jamie’s comment…yep. 18:55:13 From Jamie Angus (she/her) : Change is good for making stuff stand out. 18:55:39 From Greg Dixon : It seems like the Suzanne Vega effect is bad and something we want to avoid? As mix / mastering engineers what should we try to avoid to not have these effects happen? 18:56:27 From Jamie Angus (she/her) : Use a proper codec! 18:56:56 From Greg Dixon : noted 18:57:24 From Angel Gonzalez : I have one question about 18:57:40 From Angel Gonzalez : What do you think about DSD 18:58:49 From Alex Zuchotzki : speaking of codecs, you mentioned some being room and some being headphone optimized. is this a substantial difference, or just small technical details? 19:00:27 From Brian Willoughby : Search the AES library of papers for "1-bit sigma-delta" if you want to learn about DSD. 19:00:54 From Bob Smith : could you discuss how some sounds are unmasked at lower phon levels while masked at higher phon levels. 19:02:57 From Jamie Angus (she/her) : Interestingly the Speech transmission Index (STI) takes account of the self masking for high levels. In voice alarm systems now, louder is not better! 19:04:21 From Jamie Angus (she/her) : There were some measurements done in the UK BW widening due to loudness lasts longer than the threshold shift 19:04:51 From Brian Willoughby : Which Brian C. J. Moore book title? 19:05:38 From Brian Willoughby : An Introduction to the Psychology of Hearing (?) 19:05:46 From howard : If a stereo signal is combined into mono in a stereo amp and played through one speaker, and very noticeable loss of musical content is perceived, is this likely masking, or some aspect of phase manipulation in the mix? 19:06:08 From Jamie Angus (she/her) : Fastl is quite good to 19:07:24 From Jamie Angus (she/her) : No Worries! 19:08:08 From Bob Olhsson : I need to go to bed. Goodnight everybody. 19:08:19 From Jamie Angus (she/her) : Yes a great talk! 19:08:20 From Jerry Jensen : Bailing out as well. Thanks JJ from another. 19:08:23 From Brian Willoughby : Thanks J.J. !! 19:08:31 From Florin Folta : Thank you for the excelent talk! I'll drop now. 19:08:39 From Luke Pacholski : I should go too. Night all. 19:08:42 From Bob Smith : Thank-you jj for another excellent presentation 19:09:10 From Rick Lambright : Thanks, JJ! Awesome as always! 19:09:13 From Erick Sheldon : Thanks very much, jj! 19:09:23 From Jayney Wallick : Thanks bunches JJ et al! 19:09:38 From Gary Gottlieb : I've got to run, thank you JJ! 19:26:43 From Greg Dixon : We're happy to have you here! 19:32:01 From Steve Savanyu : FOH online 19:37:21 From Micah Hayes : Thanks guys. I’ve got to run but great seeing you all! 19:37:55 From Jayney Wallick : Likewise Micah! Hope you can join us again, or stop by for Tea Time Topics on Saturdays! 19:40:29 From Kevin Shank : I am off mic. 19:42:12 From Kevin Shank : am in Redmond, work at Meta audio tuning AR/VR/Portal. Went to Salford University couple decades ago, 19:42:37 From Jayney Wallick : Thanks Kevin, welcome! 19:42:47 From Mike Matesky : Nice to meet you, Kevin! 19:44:05 From Kevin Shank : dfigital audio class, 19:44:08 From Kevin Shank : IIRC 19:44:25 From Kevin Shank : was a distance leaner never in UK 19:45:46 From Jamie Angus (she/her) : I play the drums… does that count? 19:49:16 From Jamie Angus (she/her) : What was the BW of the analogue channel!? 19:55:51 From Steve Savanyu : Steve Savanyu ssavanyu@bufordthedgehgo.com feel free to reach out... 19:56:26 From Jayney Wallick : Thanks Steve, will do--I have family in Columbus! 19:58:03 From Greg Dixon : I have a tortoise shell cat as well 19:59:08 From James Johnston : Must go soon. 19:59:19 From Jamie Angus (she/her) : @bufordthehedgehog? or as written? 19:59:23 From Mike Matesky : JJ, Thanks!! 19:59:33 From Greg Dixon : yeah, thank you j.j.!! 19:59:33 From Bob Smith : Thank-you jj! 19:59:34 From Jamie Angus (she/her) : See you JJ! :-) 19:59:49 From Jamie Angus (she/her) : Thank you great talk 19:59:58 From Robert Klacza : Thanks JJ for the great presentation !!!! 20:00:40 From Jayney Wallick : Hey JJ, definitely, thanks bunches for another great taok! 20:00:43 From Greg Dixon : My wife is from Elkhart and yep she's a Yoder 20:00:56 From Jayney Wallick : OOps, I meant talk! 20:01:10 From Steve Savanyu : As written... It looks weird but it was jamming all letters of Buford T Hedgehog together... 20:16:14 From Ted Marsh : Great meeting tonight. I really enjoyed it. Gotta run now. Ted Marsh tmconsults@gmail.com 20:17:12 From Jayney Wallick : Thanks Ted, where are you located? Please join us again, and try Tea Time Topics on Saturdays if you'd like!