hi yoo,
        Try Panasonic card type speakers marketed by Digi-Key whose frequency
ranges from 150Hz-100KHz(WM-R30B) and 400Hz-100KHz(WM-R57A). I am interested
in speakers beyond 100KHz, If u come across one please let me know.

Thnks
Babu

-----Original Message-----
From: mems-talk-admin@memsnet.org [mailto:mems-talk-admin@memsnet.org]On
Behalf Of Kyu Tae Yoo
Sent: Wednesday, February 27, 2002 4:38 AM
To: mems-talk@memsnet.org
Subject: [mems-talk] microphone testing


Hello,

I am trying to measure the frequency response of a capacitive
micromachined microphone. I am using a super tweeter as a sound
source upto 40KHz, but I am also interested in the frequency response
beyond the audio frequency ( possibly upto 150 KHz). Does anyone know
which transducers are capable of generating low ultrasound (40~150KHz)?
and Who makes them?
Thank you, and have a wonderful day

____________________________________________________________________
Kyu-Tae Yoo
Ph.D. candidate

Cornell University                       Phone:530-752-2522(office)
#117 Phillips Hall                            :530-902-5153(cell)
Computer and Electrical Engineering           :530-297-5153(Home)
Ithaca, NY  14853-5401                   eFax :509-463-1127
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