The next online meeting of the AES Melbourne Section will be on Monday 13th December 2021 at 7:30pm.
Michail Barabasz, of loudspeaker maker Lorantz Audio will present on the topic of:
Loudspeaker Power Ratings
…and other myths.
Modern class D amplifiers are capable of kilowatts of drive and care little for the load impedance. Can loudspeaker voice coils and suspensions handle this? Dedicated amplifier/loudspeaker combinations in active boxes can have sophisticated protection programming. How effective can this be? How should the standards for loudspeaker testing and power ratings tackle this?
On Monday October 11th the AES Melbourne Section mounted another Zoom online meeting, due to Victoria’s continuing and now world record-breaking pandemic lockdown situation.
Over thirty members and guests joined the meeting to hear Inventor and Vastigo Ltd CTO, Joe Hayes speak on his DaS AuReality loudspeaker technology in a presentation entitled:
“From Stradivarius to Speaker – technology for improvements in sound delivery and room acoustics treatment”
The DaS AuReality system claims to reduce the impact of room acoustics for the listening experience and produce a listening experience free of sweet spot limitations by using an algorithm to create Diffusion at the Source (DaS))
The next online meeting of the AES Melbourne Section will be on Monday 11th October 2021 at 7:30pm(Australian Eastern Daylight Saving Time UTC+11).
Joe Hayes, Inventor and CTO of Vastigo Ltd will describe his DaS AuReality technology in a talk titled:
From Stradivarius to Speaker
technology for improvements in sound delivery and room acoustics treatment.
We are familiar with a well-designed concert hall having clarity of performance without hard echoes and a balanced enveloping sound field. We seek to capture this in our recording and listening experiences but we often must put up with less-than-ideal acoustic environments.
What if the enveloping experience could be recreated directly from the loudspeaker without the need for the concert hall? And what if the recreated sound field did not detract from the initially arriving direct sound but could actually mask and improve the inevitable echoes and reflections of the typical less than the ideal listening environment?
Twenty members and guests gathered in the foyer of the ABC Southbank studios for a tour of the ABC radio studios. The timing was fortuitous as, while we waited we had a panoramic viewing window into the ABC-TV News studio, where the 7:00 pm flagship bulletin was going live to air. That made for an entertaining wait.
Chairman
Graeme Huon then welcomed all to the meeting and introduced ABC Radio
Operations Manager Paul Penton and Senior Operator Richard Girvan,
who were to be our hosts for the evening.
Splitting up into two groups and starting in Radio Master Control, operator Brett assisted Richard and Paul in describing the operation of MCR and the scheduling software, and localization, explaining that the majority of content is live with a little bit of replay off digital storage using Netia software. Richard commented that the localization elements are still running on the ABC-developed D-Cart system (dating from 1995 build). He explained that localization was the system whereby when a program is being fed to multiple centres, local promos and idents are triggered at each centre when the program cuts to a break. He also indicated that a small amount of voice tracking is done using the commercial RCS Zetta package.
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