SIGNALS
Derek Black Joins AVL Media Group as Accounts Manager
AVL Media Group — the Quebec-based North American distributor of Lab Gruppen , Klark Teknik , Turbosound , Midas , Tannoy , and other brands — has appointed Derek Black to the position of accounts manager .
“ Having Derek join AVL is such a positive move for us and we could not be happier ,” says Andrew Hope , managing director of AVL . “ He is known to his peers as a consummate professional and , just as importantly , a good listener . Derek Black has been a professional colleague of mine for years and he always makes sure that the customer ’ s needs come first .”
Black spent 20 years with Tannoy North America , which later became TC Group . Under the TC umbrella , he was responsible for all aspects of territory sales for the Lab Gruppen , Tannoy , and TC Electronics brands into the commercial sound and sound reinforcement markets . He also had subsequent stints with QSC and HHB Canada .
“ I am happy to be reunited with my colleagues and to be starting this new chapter with AVL Media Group ,” Black says . “ Their level of involvement in design and install projects , both from a product perspective as well overall customer support , is remarkable . I see huge potential with all of the brands currently in the AVL portfolio .”
DEREK BLACK
New AES75 Standard Announced for Loudspeaker Measurement
The Audio Engineering Society has announced the adoption and publication of AES75-2022 , “ AES standard for acoustics – Measuring loudspeaker maximum linear sound levels using noise .” The new standard addresses the need for a practical and cohesive procedure for the prediction of loudspeaker performance . AES75 is the result of extensive work by the AES Standards Committee ’ s SC-04-03-A Task Group , co-chaired by Merlijn van Veen , the senior technical support and education specialist at Meyer Sound , and Roger Schwenke , Ph . D ., Meyer Sound ’ s senior scientist and innovation steward .
“ The work of the drafting group was deliberate and thoughtful as they carefully refined the standard ,” says AES Standards Chair Bruce Olson . “ AES75 will no doubt join the most impactful standards that the Society has published in its long history of providing the audio industry with critical tools for analyzing the performance of audio equipment and ensuring interoperability .”
Predictive evaluation of loudspeaker performance based on published specifications has traditionally been challenging due to inconsistencies in both measurement procedures and in how measured parameters are reported . “ Until now ,” explains Schwenke , “ reading an SPL number on a datasheet often inspired more questions than answers regarding test signals used and procedures for measurement . Most important to the end user is how the loudspeaker will perform with typical audio signals and whether the numbers can be compared apples-to-apples with numbers from one datasheet to another … AES75 addresses these issues by providing a detailed procedure as well as a specific test signal , M-Noise , whose RMS and peak levels as functions of frequency have been shown to better represent typical program material . Furthermore , AES75 is designed to be independently verifiable , using analyzers and microphones typically used by audio professionals . By being independently verifiable , AES75 provides system specifiers and users a much more enforceable metric to use in quotes and architectural specs .”
More information about AES75-2022 can be found in the AES ’ s Standards News Blog . The AES75 standard as well as the M-Noise signals and coherence test tracks are available for download at
www . aes . org .
PHOTO : MESSE FRANKFURT EXHIBITION / PIETRO SUTERA
16 PROFESSIONAL SOUND