Verify
Once the FIR filter is stored in the DSP, the user has the possibility to verify the equalization result
by measuring the new loudspeaker IR with the FIR filtering enabled. To do this, click the “Verify”
button at the botton right of the “Calculate FIR” page and the “Verify” page is shown.
Clicking the “Verify” button when the computed FIR filter is not yet stored in the DSP, even allows
to proceed with the verify process, but care should be taken, since the IR measurement will be
performed using the last stored FIR filter, that may not have been generated with the actual
loudspeaker response, resulting in a misleading behaviour.
To start the verify process, click the “Measure” button at the top left of the screen and wait in
silence. After the sine sweep completion, the new IR is computed and shown in the time/frequency
domain plots. It is possible to compare the original and the compensated IR by acting on the
“Before / After Correction” option button in the top right of the screen.
Now, it's the time to listen the sound improvement of the FIR filtering. So, close the Wizard
window or click the “Exit” button and a message is shown on the screen asking to save the Wizard
project. After saving (or skipping) the project file, the Wizard window is closed and you can enable
the FIR filtering on the DSP to listen the IR equalization result.
Phase's plot on graphic
there are different mode to see the plot of the phase.
−
option to see the wrapped/Unwrapped phase
−
option to see the frequency axis (scaleX) in Linear/Logarithm mode
Summary of Contents for LPP-480F
Page 1: ...User Manual LPP 480F...
Page 49: ......
