- FRD Consortium - "The FRD
Consortium is group of designers, experts, hobbyists and programmers
that develop specialized acoustic design tools and simple methodology
that streamline inter program operation based on Frequency Response
Data file exchange." These guys have written some of the most
useful tools for loudspeaker design I've ever used. Stop by and
check them out.
http://www.pvconsultants.com/audio/frdgroup.htm
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- LspCAD
~ This demo version offered by Adire Audio is fully functional
and offers you the flexibility to design with ease and confidence
your next loudspeaker system. LspCAD is used by the pros and
offers every possible design parameter you could ever need to know
regarding the possible response characteristics of the speaker you
design. Very powerful and accurate tool for any speaker
builder enthusiast. 537K .zip file.
www.adireaudio.com
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- UniBox ~ Unified Box Model For
Enclosure Design by Kristian Ougaard.
Spreadsheet created in Microsoft Excel 7.0. Models sealed,
ported, and PR enclosure types. Graphs cone excursion, various
frequency responses and numerous SPL plots. Very conclusive
and very detailed. Recommended for advanced DIY'ers.
460 Kb .zip file.
http://home20.inet.tele.dk/kou/ubmodel.html
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- Speake_32 Demo ~ Deon
Bearden is offering a free demo version of the famous
Speake_32. This software is used by the pros and will do just
about anything. I'm not sure what the demo version offers, but
I'm sure it's enough to model most speaker designs. 12.56 Mb
.exe file. www.diyaudio.net/software/speak32/
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- WinISD ~ Internet Speaker Designer
by Juha Hartikainen. One of the most popular
programs for speaker modeling due its easy-to-use interface.
Models sealed, ported, and bandpass enclosures. Graphs
frequency response, phase, group delay and maximum SPL.
Complete with a large driver library and allows you to easily add to
it with your own drivers. The one thing I love about this
program is the ability to choose either
standard or metric units for all parameters. Mach levels are calculated.
Signal generator built in and does really cool sweeps.
815 K .exe
file.
http://www.linearteam.dk
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- DOS BoxModels by Bob
White. If you still love using DOS-based software, then
these are the programs for you. Models ported, sealed, bandpass,
passive crossovers, and even transmission lines. Very complete
and easy to use. His site also includes various other
downloads for speaker analyzing such as System Simulator and a Delay Lattice calculator,
a complete derivation of Benson-Thiele-Small model, and a comprehensive Loudspeaker System modeling program
(FlexSys). Lots of good stuff.
www.hal-pc.org/~bwhitejr
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-
Linkwitz Transform Circuit ~ Offered
by True Audio and is the perfect tool for designing your next
electronically assisted sealed enclosure. Opens in Excel and
models frequency response before and after equalization.
Completed circuit requires only a single operational amplifier, few resistors and capacitors.
www.trueaudio.com
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- Sine Wave Generator ~ The best
tone generator
available for free download. Includes sine wave, triangle wave, square wave,
impulse wave, sawtooth wave and white noise. Fast, easy and
friendly. 204K filename:
tnsetup.exe. Click here for download.
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- KB Acoustics - Visual Ears
~ Visual Ears will
help you find a "listening sweet spot" which minimizes the
effects of standing waves (20-200Hz) and boundary reflections
(20-500Hz). Visual Ears is recognized as an essential tools in
listener and speaker positioning. Visual
Ears produces a graph plotting Frequency versus SPL for all axial
room standing wave modes up to 220Hz at the listeners position.
There is a different color graph marker for each of the room
dimensions. Adjust the speaker and listening position to get most of
the markers inside the dotted area.
500K Demo version is free.
www.kbacoustics.com
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- Speaker Pro 6.0
~ I haven't used this program one bit. It's in
DOS. It does all the basic stuff but the user interface
is somewhat complicated. I'm sure it does a lot of stuff
that's great and useful. Check it out and see what it will do
for you. www.hometown.aol.com/speaker60E/load.htm
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- AudioCad ~
I couldn't find out much about this program. I couldn't
even download the software because the content was blocked by my
ISP. It may have useful information. Check it out for
yourself and let me know if it's useful software.
http://www.audiocad.de
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PureBits.com
~ Offers Professional Software tools for Audio Analysis and
Processing. Their latest release is called Sample Champion. It is
a fast, accurate and easy to use audio measurement program. It has been designed for acoustical
technicians, sound engineers, scientists and students. With this software you'll be able to easily perform Impulse response
measurements, FFT analysis and much more. Graphs of Audio Quality
(SNR, THD, THD+N, IMD), Filter Banks
(butterworth and Chebyshev IIR digital filter, IEC 1260 Octave and 1/3 Octave
Filter Banks), Waterfall Plot and Room Acoustics plug-ins, plus a
whole lot more. Trial version lasts 30 days. 1.99M. www.purebits.com
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