Dale Musser's List: audio

physics.aps.org/st3 sound physics lens

www.reallycooltoys.com/...news10.html

www.itechdiary.com/orry-disturbing-neighbors.html

global.rakuten.com/...l001-speaker

mainp2210.wordpress.com/...ol-and-unusual-speakers-part-1

www.kemo-electronic.de/...ltrasonic-wall-loudspeaker.php

www.explainthatstuff.com/directional-loudspeakers.html

www.physicsforums.com/...t-144509.html

www.springerlink.com/...8833u321v3j32143

www.google.com/US7376236

www.discovercircuits.com/...ultra40khzxtr1.htm

www.discovercircuits.com/...ultrasonic.htm

circuitos.cl.tripod.com/...r72.gif

www.radio-electronics.com/...iode_single_balanced_mixer.php

www.bestbuy.com/...1434443.p

www.sprawls.org/USPRO

en.wikipedia.org/...Sound_from_ultrasound

www.mendeley.com/...ode-piezoceramic-transducers-4

www.apart-audio.com/...products.aspx

www.atlassound.com/Product.aspx