Nov 23, 2005 #1 J jabidof Member level 5 Joined Jul 25, 2003 Messages 80 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,286 Activity points 675 I'd like to use the microphone input for low frequency voltage amplitude measurement, e.g. DC. Does anybody have experience about this? If you know about a perl module that control the mic input, let me know... :!: Thanks
I'd like to use the microphone input for low frequency voltage amplitude measurement, e.g. DC. Does anybody have experience about this? If you know about a perl module that control the mic input, let me know... :!: Thanks
Nov 23, 2005 #2 T throwaway18 Advanced Member level 2 Joined Jun 9, 2005 Messages 594 Helped 101 Reputation 202 Reaction score 24 Trophy points 1,298 Location Kent, UK Activity points 8,347 PC soundcard microphone and line inputs are capacitor coupled. You can't use them for DC measurements. The frequency response of some models of soundcard is not very flat.
PC soundcard microphone and line inputs are capacitor coupled. You can't use them for DC measurements. The frequency response of some models of soundcard is not very flat.
Nov 23, 2005 #3 J jabidof Member level 5 Joined Jul 25, 2003 Messages 80 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,286 Activity points 675 Thanks! I had the hope i could turn the pc into a cheap A2D converter. I guess a microcontroller is the only way to go...
Thanks! I had the hope i could turn the pc into a cheap A2D converter. I guess a microcontroller is the only way to go...
Nov 24, 2005 #4 T tanveerriaz Full Member level 5 Joined May 14, 2001 Messages 284 Helped 33 Reputation 66 Reaction score 23 Trophy points 1,308 Location GB Activity points 1,009 Sound card based multimeter https://www.qsl.net/om3cph/sb/dcwithsb.htm
Nov 25, 2005 #5 B bios Newbie level 2 Joined Nov 25, 2005 Messages 2 Helped 1 Reputation 2 Reaction score 1 Trophy points 1,283 Activity points 1,302 yo, i'm new here and i'm doin project related to interfacing the mic or any musical instrument into my pc and i need to record the input waveform... anyone care to tell me...thx man!!
yo, i'm new here and i'm doin project related to interfacing the mic or any musical instrument into my pc and i need to record the input waveform... anyone care to tell me...thx man!!
Nov 25, 2005 #6 E echo47 Advanced Member level 6 Joined Apr 7, 2002 Messages 3,933 Helped 638 Reputation 1,274 Reaction score 90 Trophy points 1,328 Location USA Activity points 33,176 bios - do you simply want to record sound to a file? In Windows, you can use the built-in Sound Recorder utility.
bios - do you simply want to record sound to a file? In Windows, you can use the built-in Sound Recorder utility.