I think there is. This is just my opinion of course, but I think we need a standard signal burst, one that last for about 1 second or so, that is completely non-repetative.
The instrument would then compare the amplifier's output to the original. The result would be examined for odd-ordered harmonics so a listener fatigue/brightness rating can be assigned. Then the lower ordered harmonics can be analyzed so a low-order coloration (warmth, caramel, syrupy) value can be assigned.
It would be nice to do this with a variety of test loads, both linear and nonlinear.
That's where *I'd* like to start anyway. I think there is no reason why such a test could not be devised- the compute power for that is pretty common these days.
The instrument would then compare the amplifier's output to the original. The result would be examined for odd-ordered harmonics so a listener fatigue/brightness rating can be assigned. Then the lower ordered harmonics can be analyzed so a low-order coloration (warmth, caramel, syrupy) value can be assigned.
It would be nice to do this with a variety of test loads, both linear and nonlinear.
That's where *I'd* like to start anyway. I think there is no reason why such a test could not be devised- the compute power for that is pretty common these days.