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Obviously with a single speaker you are not looking at spatial matters, but spatial matters have some bearing on the perception of your spectrally rich soundscapes. Is the soundproof booth actually anechoic? - if not, (and presuming it's small) there will be frequency dependent effects (of reflections at some frequencies) and so the signal measured at the eardrums would not be the same as that measured at the speaker. I do agree with other commentators that coaxial ought to be best, though again, if not anechoic, the results of different dispersion characteristics for different frequencies might be confounding. regards ppl
Dr. Peter Lennox SFHEA Senior Lecturer in Perception College of Arts, Humanities and Education School of Arts
t: 01332 593155
https://derby.academia.edu/peterlennox https://www.researchgate.net/profile/Peter_Lennox
University of Derby, From: AUDITORY - Research in Auditory Perception <AUDITORY@xxxxxxxxxxxxxxx> on behalf of Chait, Maria <m.chait@xxxxxxxxx>
Sent: 07 March 2017 22:26:04 To: AUDITORY@xxxxxxxxxxxxxxx Subject: loudspeaker recommendations Dear Colleagues, So far we have been conducting our behavioural experiments using high quality headphones, but for various reasons will need to shift to using free field sound presentation for some of our work. I was hoping you might be able to recommend
a high quality loud speaker to use for this purpose; Ideally, one that we can purchase easily from the UK.
Our requirements: Experiments are conducted in a small-ish sound-proof booth, and we plan to position a single loudspeaker about 50-70 cm in front of the listener (space constraints prevents this from being any further away). Stimuli are
spectrally rich ‘soundscapes’. My understanding is that we should prefer single cone speakers? Many thanks, Maria Maria Chait PhD Reader in Auditory Cognitive Neuroscience Lab site: http://www.ucl.ac.uk/ear/research/chaitlab/ UCL Ear Institute 332 Gray's Inn Road London WC1X 8EE The University of Derby has a published policy regarding email and reserves the right to monitor email traffic. If you believe this was sent to you in error, please reply to the sender and let them know. Key University contacts: http://www.derby.ac.uk/its/contacts/ |