juz_ad
Full Member level 2
I'm after some general information on learning/developing better techniques for testing audio circuits.
For now, (I think) my main priority is to compare the quality of the input signal with the 'dry' (unaffected) output signal so I can see what effect (if any) the circuit is having on the signal. An example of this might be putting a sine wave through a VCA to ensure that when the VCA was fully open - there was no change between input and output.
At the moment I switch between using a Sine Wave and a Square Wave and I compare the input and output signals visually on a scope...
...but if I wanted to get deeper than that - what should I be considering, researching or measuring?
As an example - my mixer specifications tell me it has <0.0007 THD. How is this measured?
Would learning more about FFT help?
I'd appreciate some advice on this - no matter how general.
Thanks!
For now, (I think) my main priority is to compare the quality of the input signal with the 'dry' (unaffected) output signal so I can see what effect (if any) the circuit is having on the signal. An example of this might be putting a sine wave through a VCA to ensure that when the VCA was fully open - there was no change between input and output.
At the moment I switch between using a Sine Wave and a Square Wave and I compare the input and output signals visually on a scope...
...but if I wanted to get deeper than that - what should I be considering, researching or measuring?
As an example - my mixer specifications tell me it has <0.0007 THD. How is this measured?
Would learning more about FFT help?
I'd appreciate some advice on this - no matter how general.
Thanks!