I have inquired and tried it. Most soundcards have a high pass filter set at 10 Hz. This means any frequency below 10 Hz is lost. -Travis -----Original Message----- From: psn-l-request@.............. [mailto:psn-l-request@................. Behalf Of David russel Sent: Friday, May 04, 2001 8:13 PM To: PSN-L@.............. Subject: Voltage controled attenuator/amp Al's inquirey about the VCA got me think'in again about of a method of getting data from the s'smtr into the computer. I was wondering if it was possible to Amplitude Modulate, with the seismometer signal, a carrier of an arbitrary audio frequency of about 10Khz and input it into the SoundBlaster at the back of your computer. Then doing something fancy with software like peak averaging then plotting it. Anyone ever done somth'in like this? Casey ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/tagj. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) __________________________________________________________ Public Seismic Network Mailing List (PSN-L)
Larry Cochrane <cochrane@..............>