To start using Speaker Workshop, the first thing
I do is connect the line-out of the soundcard to the Jig input and
the jig output lines to the line-in of the sound card. I set the
jig so that it uses the Z input and the reference resistor is shorted
(middle Ref setting). This sends the input to both channels identically.
Then I set the volume on the mixer to the appropriate
levels. I do this by
1) Create a new generator resource - I call mine Basic.
Set it to a sine wave at 1000Hz (the frequency is not critical).
2) Perform a record operation with volume set to 50
3) Ensure that the input value (Basic.in.l and Basic.in.r)
are about +-16000. If they are not, adjust the mixer levels (wave
out, output, and line-in record) until they are. I try to make the
output level pretty high and set the input level accordingly. My
mixer (for the PCI512) looks like this:
Note that I set the line output value to 0, to avoid
any feedback loop that may occur from line-in. Also note the record
device is set to "Line".
After tweaking, the screen looks like (for a 2 second
record and play time). Note there is so much data that it just looks
like a black bar. If you zoom the charts way in you can see the
sinusoidal recorded waveform.: