Computer Oscilloscope Problems

[cariboo1946]

I've downloaded two computer oscilloscopes, so that I could measure the
frequency of a two tone audio signal I have on a cd. Both of these computer
oscilloscopes use the sound card for input, yet no matter how much I try to
get them to measure the signal, all I get is a flat line, no measureable
wave at all.

The one is Oscilloscope 2.51, the other is the BIB Lab Oscilloscope 3.0. Is
anybody familiar with these two programs, and can give advice on how to set
them?

Thanking you in advance...........DF

 

[Charles Schuler]

"cariboo1946" <cariboo1946@yahoo.com> wrote in message
news:%S9Kd.51332$Qb.7513@edtnps89...

I've downloaded two computer oscilloscopes, so that I could measure the
frequency of a two tone audio signal I have on a cd. Both of these
computer
oscilloscopes use the sound card for input, yet no matter how much I try
to
get them to measure the signal, all I get is a flat line, no measureable
wave at all.

Are they looking for signal input from the microphone jack on the computer?
Have you tried that?

 

[Carl D. Smith]

On Thu, 27 Jan 2005 17:51:55 GMT, "cariboo1946"
<cariboo1946@yahoo.com> wrote:

I've downloaded two computer oscilloscopes, so that I could measure the
frequency of a two tone audio signal I have on a cd. Both of these computer
oscilloscopes use the sound card for input, yet no matter how much I try to
get them to measure the signal, all I get is a flat line, no measureable
wave at all.

The one is Oscilloscope 2.51, the other is the BIB Lab Oscilloscope 3.0. Is
anybody familiar with these two programs, and can give advice on how to set
them?

Thanking you in advance...........DF

You may have to go into your mixer controls and uncheck "mute" on
either the line input or mic input, whichever you are putting the
signal into. Double click the volume control in your taskbar to
get the mixer.