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The January 2023 ZOOM ONLY Meeting

The Second Half of the AES New York Show

Date: Sunday, January 29, 2023, 7:00 PM – 9:00 PM
Place: online Zoom session only
TOPIC: Finishing up the AES New York review (also NAB show)

This month will finish reporting the AES show Alvin and I went to in October 2022. We will feature an interview with Tomasz Zernicki – the founder of Zylia which produces a unique Soundfield type microphone. You will see Alvin and myself interacting with the Zylia VR demo environment. It was a first for me. The NAB show was held in the other half of the hall. It featured mainly networking environments, data storage and backup facilities, studio management software, and studio hardware (mixers, monitors, etc.).

We also will present short interviews and demonstrations of other interesting manufacturers.

We hope that you will have interesting things to bring up in our Open Forum Session.

The meeting will be Zoomed only as there is only A/V material to present.

I hope to see you then.

Join the Zoom Meeting !

Ken Schwarz is inviting you to a scheduled Zoom meeting.

Time: Sunday, January 29, 2023 ~ 7:00 PM Eastern time

IF you are viewing this on a phone or tablet, you can and should download the ZOOM APP.

You can ALSO click on this link and simply DIAL IN to participate:

If you are using a computer and this is your first time with Zoom, please give yourself at least 15-20 minutes prior to the meeting to set things up: click on the link in the Zoom instructions below and you will be guided to download the Zoom software, HERE:

You can use your computer’s audio if you have a headset attached, or you can dial-in for audio. If you have a smart phone or tablet and a good internet connection, then you should install the Zoom app for your device and connect using it.

January 2023

1. More silly stuff

KEVALIN AUDIO, North American distributor for WAVERSA SYSTEMS, invites you to explore a new, passive digital filter technology unique to the industry, the EXT Digital Noise Isolators. While details are closely held due to patent conditions, this military-based technology has proven effective in digital audio reproduction, producing notable improvement in both audio and video performance. Collin Shin, CEO of Waversa Systems, says, ‘This module “forms an electric field and a magnetic field to remove RFI noise from the LAN cable and noise generated by the digital signal line itself.”’ Waversa’s proprietary technology is applied differently at each level of the series, the EXT-1, EXT Reference, and EXT Reference Plus. The line includes models for:

• LAN Ethernet


• Coax (RCA, BNC, and AES/EBU)


All three models are totally passive, do not require a power supply, and are non-directional. All are supplied with a short-run cable to be placed between the filter and the destination component, usually the final piece in the digital transmission chain.

email me here

Below, other meetings and notices which
may be of interest to BAS members
GBH Awarded $16 Million to Digitize Radio, TV Broadcasts

A Boston issue - As MIX magazine reports:

Sound Museum owners cry foul as their tenants likely secure new spaces without them

While the headline sounds like someone has sour grapes, the complete story of how the closure of this crucial Boston rehearsal studio is being handled is far more nuanced and complicated -- particularly since it brings up issues of gentrification, government support of the arts, non-profits' ethics and more. Full Story HERE  (WBUR-FM Boston (1/11/23)

And here's an update:


In the recent (April 2022) performance of Mahler’s Third Symphony at Boston's Symphony Hall by Ben Zander and his Boston Philharmonic, the recording was done with the three main spaced omnis with two more farther back. No accent mikes or chorus microphones were used nor, it turns out, were they needed. Remarkably, this produced a recording that is as close to the Symphony Hall experience as may be possible.

The info is here:

Here is the recording in its entirety as a single .WAV file; 44k / 16 bit; 1hr 47 min
Mahler Sym 3 CD.wav  1.1GB  
(For those of you with editing software note that the .wav file HAS markers to denote the movements.)

Here is the exact same Symphony 3 with the movements separated as FLAC files, 48k / 24 bit as a ZIPped file: Mahler 3 Zander as  1GB

IF you'd like further Gustav Mahler info...

Shop Talk

Shop Talk was a WBUR program about Hi Fidelity, music, speakers, tape recorders, etc. Enjoyed by many during the 1970s, the program's format was ‘talk’ and interviewing major audio luminaries. It was a forerunner of the popular program Car Talk!

Peter Mitchell and Dr. Richard Goldwater were the original hosts. They were later joined by Brad Meyer. Here, John Allen interviews Scott Kent:

Shop Talk John Allen talks to Scott Kent on SPEAKERS.mp3   (81Mb 1:27)

Shop Talk John Allen talks to Scott Kent on TAPE RECORDERS.mp3  (79Mb  1:26)

There is also an episode track on the BAS CD and here is that Description:

Track 12. "Shop Talk", WHRB-FM, November 5, 1984.
Peter Mitchell (on the left), Richard Goldwater, MD (center) and E. Brad Meyer (right) introduce the show with a 1932 stereo recording and prepare to talk with guests Mark Davis and David Moran, both then of dbx corporation.

Shop Talk, which through most of its ten-year life on WBUR featured just Mitchell and Goldwater, was the precursor of Tom and Ray Magliozzi's "Car Talk". As we finished our 9:00-10:30 stint every Saturday morning, Tom and Ray would take our places and begin joking with each other. Eventually the station manager figured out that they were funnier than we were, and that more people drove cars than owned hi-fi equipment, and fired us. Until then, the show publicized the Boston Audio Society, vastly increasing attendance at our monthly meetings. The show came back for a time during the '80's on the Harvard station WHRB, where we appeared once a month as guests of HRB stalwart David Elliott. [EBM]

In September 2009 the B A S held a microphone clinic, testing 37 different microphone models. The ambitious nature of the clinic effort, the extent of data collection, the number of individuals involved in microphone testing and in writing various sections of the report, and the complexity in determining how to construct the clinic report and make it available to members resulted it not being published until now. The dataset is extensive.

Representative samples were included in the abbreviated report in "The B A S Speaker"
(Fall 2015; v37n3)

Go to the MICROPHONE CLINIC PAGE for more...

...and don't forget, here is the master list of microphones in the world

When collecting and plotting "noisy" data it is often useful to have Microsoft Excel plot a Trend Line through it.  If that data is to be used for further work, it may be necessary to have an X-Y table of the Trend Line. That is not easy to get and this paper will show how to do it.
Joseph DeMarinis has an article here: Extracting Numerical Data from an Excel Trend Line

Foster's Test Bench !
by Alvin Foster !    Click the logo: —>
The rapidly-becoming-famous BAS Headphone Test Article is now available in the BASS VOLUME 25, ISSUE 4, on Page 17, available HERE   PDF 3mb
Visit our PODCAST PAGE for:
The LIVE video podcast of our meetings,
Archived video of past meetings (only one so far!),
and Audio Podcast interviews by Alvin Foster
There is a supplemental and further explanation addendum paper to the E. Brad Meyer / David Moran paper published in the September, 2007 issue of the AES Journal. That page, which documents the experimental protocol and audio systems/source material is here:   
There is a Power Point Presentation of the lecture given by Dr. Barry Blesser at the March 2007 Meeting. The Meeting page synopsis is HERE; the Power Point Presentation (as a web page) is HERE

Some earlier BASS issues, previously available only directly by mail, are now available online, on the BAS SPEAKER page, HERE

Show your appreciation for the immense amount of dedicated work that went into both the original writing, gathering, editing and printing, PLUS the more recent scanning and conversion to PDF format, by joining the Society, HERE !

A L L   O F F S I T E   L I N K S   O P E N   I N T O   A   N E W  T A B  O R  W I N D O W


AES Future Meetings

Acoustical Society of America
SMPTE New England

There is a posting of an ABX article, The Digital Challenge by Stanley P. Lipshitz HERE


The Boston Audio Society
PO BOX 260211
Boston MA 02126

updated 1/25/23