| |
You
have reached the home of the
Boston
Audio Society
FOUNDED 1972
please
bookmark this page |
|
| Meetings
and other Notices |
|
|
Date: Saturday, September
22, 2018, 9:00 AM – 3:00 PM
Place: Boston University
Photonics Center, 8 Saint Mary’s Street,
Boston, MA 02215
Boston Branch: Audio
Engineering Society (BAS Members are Invited
to Participate)
Topic: A Day of Audio
Events
DESCRIPTION of the
All DAY Event
Boston University College
of Engineering and the Boston
section of the AES have collaborated to
provide a day of unique audio events to be
held at BU's Photonics Center. In addition
to talks on some of the latest research in
audio perception (did you know your ear acts
as an "analog" DSP system?) and
understanding why music even sounds like music
and not fingernails on a chalkboard. We'll
hear from one of the leaders in electromagnetic
analysis of guitar pickups to peel back some
of the mystery in guitar sound. Registration
is required because many events require an
accurate headcount. Coffee and Lunch are provided,
and Donations to the BAES are optional on
their website: www.paypal.me/bostonaesorg
The afternoon will feature
a DIY hands-on segment in the Photonics 105
lab. It has fully outfitted lab benches with
scopes, power supplies, and signal generators
for some hands-on activities, including the
construction of an audio project.
A summary schedule follows.
Please check the link below for updates, and
to register in advance of September 22.
For a more detailed description
of the all-day events go to: www.eventbrite.com/e/boston-university-audio-summit-tickets-49151454323,
and click on the green ‘Tickets’
to RSVP.
Morning Sessions: 8:30
AM Registration on-site, Events: 9 AM –
12 PM
Each session will include
Q&A and open discussion after each one.
1. Temporal codes and musical tonality with
Peter Criani, Senior Research Scientist
2. Guitar pickup circuit
models informed by psychoacoustics and outrageous
real-world anecdotes. Group led by Robert
Kotiuga, Associate Professor ECE
3. The mechanisms of
how we hear with Aleks Zosuls, Research Engineer
& Lecturer ECE.
---- BAS members are
likely interested most in the Morning Sessions,
9-12 PM ----
Lunch session 12 PM
– 1:30 PM
We will have a light lunch
available and the opportunity to speak with
Boston University researchers in their respective
audio fields.
Afternoon session 2PM
- 3PM+ - Hands-on / DIY builds
This event will take place
in the Photonics Center’s room 105. This
event is aimed at providing hands-on experience
to anyone that is interested in learning about
the rapidly growing world of DIY audio electronics,
and ‘how to solder’.
Transportation and
parking
There is no Red Sox game
the Saturday of the event. The Photonics Center
is close to both the Comm Ave (B line) Green
Line BU Central stop and the Beacon St (C
line) Green Line St Mary’s stop. If driving,
there are also some parking lots on the BU
campus and on nearby streets.
|
|
|
The
BAS Message
September 2018
|
|
1. From
Steve Owades
“I noticed
in the front of the latest print issue
of Sound & Vision (which used to
be Stereo Review) that the magazine
has recently been acquired by AVTech
Media, Ltd. (/www.mytimemedia.co.uk/avtech).
This British entity already owned the
British audio magazines HiFi News and
HiFi Choice, and they have also now
acquired Stereophile (www.stereophile.com/content/what-happening-stereophile).
I guess times are tough in the publishing
biz, and I hope these titles can continue.“
I subscribe to Stereophile
because it is a mix of audiophilia and
hard technical tests, fact and fancy.
Like Audio Magazine in the old days.
And the Fringe.
I marvel that British
seem to thrive with circulation figures
that are low by US standards. I believe
Audio had a circulation 0f 75, 000 when
it folded. The venerable British classical
review magazine Gramophone has a circulation
of 25,000. Maybe the English are willing
to work for less.
email me here
Webmaster's
note: Don't forget we have a worldwide
listing of audio magazines / websites
/ clubs / organizations here: www.bostonaudiosociety.org/links2.htm
— Barry
|
|
|
|
| Below,
other meetings and notices which may be of interest
to BAS members |
|
|
| BAS
MICROPHONE CLINIC REPORT ! |
| 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...
|
|
|
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 a new 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:
www.bostonaudiosociety.org/explanation.htm
|
|
| 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 W I N D O W
- AND FOR CONVENIENCE
-
|
|
|
The Boston Audio Society
needs individuals who will write summaries of BAS meetings into
*.pages, *.doc, or *.txt files. We usually have audio recordings
of the meetings. We pay for your work. Ask about our bonus program
for meeting-writers! Contact David B. Hadaway (603-899-5121;
dbsys22@att.biz).
Does anyone have a schematic (or any
other info!) for any Dunlop-Clarke Dreadnaught amplifier? Email
Barry at webmaster@bostonaudiosociety.org
For sale: Audio Precision
System 1 audio test system. SYS-322A, s/n SYS1-31968, IMD, BUR,
W&F options, A-weighting filter, PCI interface card, rackmounts;
asking $5000. Contact Mark Chambers machambers@charter.net
For sale: Several CD storage
racks, some made by Bostonwood (www.BostonWood.com/cd.html):
Two four-shelf units (25.5"Hx17"Wx5.5"D); One
four-shelf unit (25.5"Hx24"Wx5.5"D); Two three-shelf
units (19.5"Hx17"Wx6.5"D); one home-made three-shelf
unit (18"Hx14"Wx6"D). I have attached a handle
and chains to several units, making them convenient open-top
carriers. David J. Weinberg (Maryland; 301-593-3230).
Seeking a two-channel preamplifier
such as an Apt Holman, an early Hafler, or an early NAD. Must
work properly. Fred Ampel (FAmpel@KC.RR.com).
Seeking prereceord Advent
cassettes, especially Russell Sherman Beethoven and Liszt recordings,
and Handel's Messiah performed by the Handel & Haydn Society
under Thomas Dunn. David R. Moran (DRMoran@aol.com).
I am disposing of all my old copies
of the BAS Speaker, which go back to 1978, more or less complete.
I am going to recycle these with waste paper unless somebody
wants them for free. I'll even pay shipping. Doug Pomeroy Audio
Restoration & Mastering Services audiofixer@verizon.net
Discography of Test Records.
I am compiling a list of technical test records from all recording
eras and would like to exchange information in order to confirm,
expand, correct and add entries. Send me your list and/or other
information about test records and I will send you my discography,
which has nearly 200 entries to date. I am interested in commercially
released records, as well as discs intended primarily for in-house
use by audio engineers, broadcasters and for other special applications.
I am generally excluding demonstration discs of the "Super
Stereo bouncing ping-pong ball" type unless they include
at least some tracks of a technical nature, such as frequency
response and tracking tests, etc. Nicholas Starin, Portland
Oregon, NTSTestDisc@Gmail.com.
Nashville AES Test CD. (www.AESNashville.org;
click the small round symbol where it says "Click here
for more info:" to download the four-page description and
track list. Use the link on the website under <Products>
to send an email for pricing and availability.) From the website:
"Assembled 'by engineers, for engineers' after a survey
of the needs of a broad cross-section of working audio pros,
the disc features 71 tracks of test signals ranging from level
calibration tones, noise signals, third-octave tones, polarity
and digital meter calibration pulses, bandpassed noise and swept
sinewaves. Additional tracks include dry-recorded kick and snare
drums, acoustic guitar and piano along with spoken word and
a cappella male and female vocals. A data area on the disc features
BPM charts, Excel-based calculators and other bonus material.
The CD booklet includes tutorial information on using the test
disc."
For sale: Three Denon DR-M34HR
cassette decks ($500srp) with three heads and live monitoring
of the recording, dual Dolby B/C and Dolby HX Pro circuitry.
Handles normal, chrome and metal-tape cassettes. Highly regarded
in 1988. Gasparo Records used them as duplicators. In good shape.
Data at www.VintageCassette.com/denon/dr-m34hr.
$125 ea+shipping. Contact David B. Hadaway. dbsys22@att.biz.
For sale: Arcam Solo Movie
5.1 (www.Arcam.co.uk/products,solo,Movie-Systems,SoloMovie51.htm;
$4500srp) The manual is downloadable from the Arcam website.
I do not have original packaging. $1000+shipping, which will
be calculated once destination is determined. Funds transfer
or cash only; no checks. Fred Ampel (FAmpel@KC.RR.com).
For sale. Two Tannoy HPD
315 speakers, made in the mid-1970s, woofers might need refoaming.
Steven Weiner (SDWeiner@ATT.net;
818-865-0601; Thousand Oaks, CA) is asking $500+s/h. [I have
seen a photo; the cabinets and grill look to be close to mint
condition. This ad was placed at the request of member Randy
Hoffner. DJW]
Seeking: Soundfield Mark
IV microphone. Jim Mastracco (James.Mastracco@Verizon.net).
Laserdiscs for sale by David
J. Weinberg (301-593-3230; WeinbergDJ@BostonAudioSociety.org)
Four have Dolby Digital 5.1 soundtrack. Nine have DTS5.1 soundtrack.
Make offer for all or selected items.
| TITLE |
CLV / CAV? |
ASPECT
RATIO |
| Video Essentials |
|
|
| Apocalypse
Now |
CLV |
2 |
| Apollo 13 |
CLV |
2.35 |
| Batman (Michael
Keaton) |
CLV |
1.78 |
| Blade Runner
(Director's Cut) |
CAV |
2.48 |
| Blown Away |
CLV/CAV |
2.35 |
| Crimson
Tide |
CLV |
2.35 |
| Daylight |
CLV |
1.85 |
| Evita |
CLV |
2.35 |
| Forbidden
Planet |
CAV |
2.35 |
| Golden Eye |
CLV/CAV |
2.35 |
| The Grifters |
|
|
| Highlander
(10th Anniversary Director's Cut) |
CLV/CAV |
1.82 |
| The Hunt
for Red October |
CLV |
2.35 |
| In The Mouth
Of Madness |
CLV |
2.35 |
| Jurassic
Park |
CLV |
1.85 |
| Jurassic
Park |
CAV |
1.85 |
| Phenomenon |
CLV |
2.35 |
| Pocahontas |
CLV |
1.66 |
| Pretty Woman |
CLV |
1.85 |
| Raiders
of the Lost Ark |
CLV |
2.35 |
| Raiders
of the Lost Ark |
CAV |
1.33 |
| Star Wars:
Episode 1 - A Phantom Menace |
|
|
| Toy Story |
CLV |
1.78 |
| Who Framed
Roger Rabbit |
CLV |
1.75 |
Own a movie theater sound system!
For sale, top-of-the-line High Performance Stereo HPS-4000-XL
screen speaker systems. Three (left, center, right) HPS model
545-4 speaker systems (www.HPS4000.com/pages/fivefortyfive_.html)
and two HPS model 545-W subwoofer speaker systems (www.HPS4000.com/pages/545_w_.html).
All in perfect working order. The speakers are not light, but
consist of modules that can be lifted by two moderately strong
men. Truck delivery only, or come pick up. Make me an offer.
David J. Weinberg (301-593-3230; WeinbergDJ@BostonAudioSociety.org):
Most units come with user manuals
(some also with service manuals), remotes and cartons, as applicable.
Make offer:
- ReplayTV 2020 with aftermarket
larger disk drive. Includes lifetime electronic program guide
service.
- Faroudja VP400A video quadrupler.
Upscales NTSC video to 960 progressively scanned lines for
a front or rear CRT projector. Generates great image on my
big screen. I don't need it because I'm modifying my video
system.
- Runco 980Ultra CRT projector (original
packing, user and service manuals).
- Vutec concave high-gain silvered
screen. 8' wide, 16:9 aspect ratio, with wallmount brackets.
Silvered surface makes it appropriate for 3D projection, as
the high gain overcomes the substantial light loss caused
by the various consumer 3D projection technologies, and the
curved shape can deliver a wide viewing angle with little
hotspotting.
- Lexicon DC1 surround processor,
with all options.
- Panasonic RP-91D DVD player with
JVB Digital regionfree mod.
- Sony DVP-NS755V SACD (multichannel
and stereo), DVD, etc., progressive-scan output. $250srp.
- Tektronix D11 rackmount single-beam
storage oscilloscope with 5A15N vertical amp and 5B10N time-base/amplifier.
- Tektronix 5111 rackmount single-beam
storage oscilloscope with two 5A18 vertical amps and 5B10N
time-base/amplifier.
- Teac AN-180 external dual Dolby
B processor. Simultaneous stereo record and playback.
- Pioneer CT-F4242 cassette deck,
in excellent condition.
- Garrard RC88 turntable with Shure
M3D cartridge, in excellent condition.
- Sony XM-5046 car audio amp, 4x50W
into 4 Ohms
|
