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Meeting Report: February 2022 – AES75 “Measuring Loudspeaker Maximum Linear Sound Levels Using Noise”

On Monday February 14th the AES Melbourne Section turned to Zoom again for yet another online meeting.

Over thirty members and guests joined the meeting to hear Meyer Sound’s Merlijn Van Veen Chair of AES Task Group SC-04-03-A present on the current revision of the AES75 Standard “Measuring Loudspeaker Maximum Linear Sound Levels Using Noise”

After welcoming everyone, Section Chair Graeme Huon introduced Merlijn who started by explaining the work of the Standards workgroup tasked with developing this standard, noting that the Task Group consisted of more than 70 people from a wide range of related organizations who had met fortnightly for 2 years to thrash out this document.  He went on to explain the genesis of the M-Noise signal within the Meyer Sound company, and its journey to consideration for inclusion in an AES Standard.

Photo of Merlijn Van Veen
Merlijn Van Veen
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Preliminary Meeting Notice – April 2022

We are currently planning our next meeting for some time in April (whilst dodging the Easter break)

We are planning for it to be our first in-person event in more than two years.
(Note: there will be no online participation available for this event)

Charlie van Dongen of Involve Audio – who presented to us last year – will host us at his facility in Mentone (Vic) where he will demonstrate his immersive audio encoding/decoding and advanced loudspeaker technologies.
Bookings will be required, and numbers limited – so keep an eye out for when the bookings open.

Further details, and bookings will be available closer to the date – stay tuned!

February 2022 Meeting Notice: Merlijn Van Veen – AES75 – AES standard for loudspeaker measurement

The next online meeting of the AES Melbourne Section will be on Monday 14th February 2022 at 7:30pm AEDT (UTC+11).

Merlijn Van Veen, Chair of the AES Standards Task Group SC-04-03-A and Senior Technical Support & Education Specialist at Meyer Sound will present on the topic of:

AES75: AES standard for acoustics  
Measuring loudspeaker maximum linear sound levels using noise

Merlijn will briefly explore the background and impetus for this project. The AES Standards procedure will be explained and demonstrated, including challenges faced by the SC-04-03-A Task Group and how the Group’s activities have inspired development within other standard bodies. The session will close with a description of the remaining development steps.

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Seasons Greetings

Meeting Report: December 2021 – Loudspeaker Power Ratings – Michail Barabasz

On Monday December 13th the AES Melbourne Section mounted yet another Zoom online meeting.

Over thirty members and guests joined the meeting to hear Michail Barabasz of Lorantz Audio Services present on the topic of Loudspeaker Power Ratings

Title slide

After welcoming everyone, Section Chair Graeme Huon introduced Michail who started his presentation with a brief history of his career at Plessey Rola (pre-1975), including and his involvement with the 1977 Australian Standard for Sound System Equipment (AS1127, Part 5 – Loudspeakers), before establishing Lorantz Audio Services in 1976.

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