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Re: Free software for conducting psychoacoustic experiments
My Daqarta for Windows application includes a signal
generator capable of generating a large variety of signals,
including standard waveforms, arbitrary waveforms, and
several types of noise (including band-limited). The
generator produces up to 4 "streams" per output channel;
the streams may be summed, or used as modulation sources
for other streams. Each stream allows independent
modulation; modulators are Burst, AM, FM, PM (Phase
Modulation or pulse-width modulation), and frequency Sweep,
and any or all modulators can be used on the stream.
Besides generating the signals, Daqarta can also show you
their real-time waveforms, spectra, spectrograms, or
histograms. This can be very useful in understanding what
is going on with complex signals.
The only in-built psychoacoustic experiment is a
demonstration of the inability to distinguish Gaussian
noise from uniform noise with the appropriate level. (See
Help - Applicaitons - GausWhit.GEN Setup File - Comparing
Noise Distributions, or view the Web version at
But you can certainly create a huge assortment of signals,
and save them as Setup files for later use. No programming
is required; you just select the things you want, like wave
type or modulation type, and adjust the relevant controls
like frequency or level. I will be glad to assist in
creating any specific signals you are interested in.
You don't even need to purchase Daqarta to use the signal
generator. When the 30-session / 30-day trial period
expires, you will no longer be able to analyze live *input*
signals, but the generator will continue to work forever,
and you can display the live output signals as well.
(You can also analyze previously-recorded signals.)
On 15 Jan 2009 at 7:43, Fatima Husain wrote:
> Dear List,
> I was wondering if there is a freely available software with some in-built simple psychoacoustic experiments,
> something that the students can easily tweak to run their own experiments?
> I am teaching a psychoacoustics class and roughly half the class has no programming experience (hence Matlab is out.
> Thanks in advance,
> Fatima Husain, Ph.D.
> Auditory Cognitive Neuroscience Lab
> Assistant Professor, Speech and Hearing Science and the Beckman Institute
> University of Illinois
D A Q A R T A
Data AcQuisition And Real-Time Analysis
Scope, Spectrum, Spectrogram, Signal Generator
Science with your sound card!