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Re: sound events database
Ciao Ernesto,
level surely plays some role in the identification of sound sources
(e.g., weight of objects).
However, to my knowledge the database you need does not exist (although
check the latest work of Laurie Heller for a notable exception with
nonliving environmental sounds; also check Shafiro and Gygi, 2004 for
info on sound databases).
As such, I would either force your machine classifier to ignore level
information, or analyze multiple "level-jittered" instances of the same
signal.
Best,
Bruno
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@article{shafiro2004select,
title={{How to select stimuli for environmental sound research and
where to find them}},
author={Shafiro, V. and Gygi, B.},
journal={Behavior Research Methods, Instruments, \& Computers},
volume={36},
number={4},
pages={590},
year={2004},
publisher={Psychonomic Society Publications}
}
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Bruno L. Giordano, Ph.D.
Postdoctoral Research Fellow
CIRMMT – Schulich School of Music
555 Sherbrooke Street West
Montréal, Québec, Canada H3A 1E3
Phone: +1-514-398-4535, ext. 00900
Fax : +1-514-398-2962
Neil Waterman wrote:
May be I'm confused - but a large dog barking at 5m could very easily
present the same audio level generated by a slightly smaller dog at 4m?
So unless you need to reproduce Fido (being a SPECIFIC dog) at 5m (with
Fido having been recorded along with an appropriate calibration tone),
then I'm not sure this makes a ton of sense.
Surely what you really need is a database of typical SPL levels for
certain sound sources at known distances?
I work for a company producing Level D certifiable sound systems for use
in the highest fidelity sound systems, and reproduction must EXACTLY
match the source aircraft, but once you accept general sounds (as
opposed to SPECIFIC ones) there is no reference SPL only representative
levels - I face this problem when representing the ground traffic around
the aircraft while on the ground (push-back trucks, luggage carts, etc)
- Neil
On Apr 22, 2010, at 9:46 AM, Ernesto Accolti wrote:
Dear Boris,
2010/4/22 Boris Defreville (ORELIA) <boris.defreville@xxxxxxxxx
<mailto:boris.defreville@xxxxxxxxx>>:
So you'd better look at widely available commercial sound effect CD's
I don't do that because the sounds in these CD's are not calibrated.
Anyway, many thanks.
Ernesto.
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