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Re: Audibility of fire alarms

From: "Brad Ingrao" <info@bradingrao.com>

Does anyone of any research that identifies the acoustic characteristics
needed to arouse people from sleep.
Possibly The Roar of a Lion?
Or the "White Shark" soundtrack?

Sorry, could not resist ;-).

To supply some Information from my own experience.
When i get used to my alarm-clock sound i can ignore it. So it should be a
very unfamiliar sound. And the second thing: It should be heavily arranged
in the 1-4kHz frequency range. And additionally Harmonic Distortion helps
signals to be louder recognised as they are.


Best Regards,
Brad Ingrao, MSEd, CCC-A, FAAA


EDEN - The Electronic Deaf Education Network



From: AUDITORY Research in Auditory Perception
[mailto:AUDITORY@LISTS.MCGILL.CA] On Behalf Of Brungart Douglas S Civ
Sent: Wednesday, September 15, 2004 3:21 PM
Subject: Possible National Acadamy of Science Post-Doc Opportunity at AFRL

I wanted to alert everyone to this possible research opportunity at our
laboratory at Wright-Patterson AFB in Dayton, Ohio.  We are looking for
possible post-doc candidates interested in auditory localization and
multitalker speech perception.  The program is administered by the
Academy of Sciences, and the stipend is relatively generous.  There is no
guarantee that funding will be available, but for the right candidate this
could be a great opportunity.  The deadline to apply for the fall cycle is
November 1st.  Note that the position is open only to US citizens and
permanent residents (Green Card Holders).


Doug Brungart

Increasing Information Transfer in Audio Display Systems

Human audition is an amazingly complex modality capable of extracting
spatial, spectral, and temporal information from multiple simultaneous
sources even in adverse listening environments. However, most real-world
audio display systems rely on relatively simple stimuli that fail to take
full advantage of the inherent capabilities of human listeners. The goal
this research is to find ways to increase the amount of information
transferred to listeners through audio display systems. The effort
two broad areas of research. The first area focuses on the generation of
robust and intuitive azimuth, elevation, and distance cues that maximize
transfer of spatial information in audio displays, especially in noisy
environments that involve more than one virtual sound source. The second
area focuses on improving the segregation of competing sound sources in
complex listening environments, especially those that involve more than
simultaneous speech signal. A major component of this research is a study
the role that non-energetic "informational" masking plays in the
of multiple speech signals.

More info about the program...


More info about our laboratory and its facilities: