Edit: if a mod sees this thread can you please move it to the amplifier review forum? And delete this line if it's not too much trouble. Sorry!
So this picture here:
scroll
Is this picture above, + IMD + Harmonic Distortion from 32 tones across the spectrum at the same level are playing... no?
Since most music energy and dialogue in visual media has the majority of its acoustic power under 300Hz, and very little over 1000Hz, I don't think it's the most accurate to be saying THD+n is as high as it is at the higher power outputs for amplifiers that look like the example above (consistently falling THD+n until a point where THD+n decreases more slowly, usually between 2 and 10W).
A simple solution could be to analyze the sound from a collection of movies to find out how much sound energy there is across the spectrum, maybe ignoring under 50Hz because who cares if low booms have a little second and third harmonic energy? More impactful! Right? lol. I'm joking. Moving on..:
The same could be done for music using 50 songs from each genre, then weighting them for how popular each genre is.
Then, weight movies 70%, music 30%.
Then, adjust the level of the tones across the spectrum to represent the spectrum analysis.
Because a receiver is never asked to make 100W of 17067Hz!
If the THD+n isn't done the way I assumed, then I guess this thread is useless. Or maybe not - the concept could just need to be applied differently.
We'll see
So this picture here:
scroll
Is this picture above, + IMD + Harmonic Distortion from 32 tones across the spectrum at the same level are playing... no?
Since most music energy and dialogue in visual media has the majority of its acoustic power under 300Hz, and very little over 1000Hz, I don't think it's the most accurate to be saying THD+n is as high as it is at the higher power outputs for amplifiers that look like the example above (consistently falling THD+n until a point where THD+n decreases more slowly, usually between 2 and 10W).
A simple solution could be to analyze the sound from a collection of movies to find out how much sound energy there is across the spectrum, maybe ignoring under 50Hz because who cares if low booms have a little second and third harmonic energy? More impactful! Right? lol. I'm joking. Moving on..:
The same could be done for music using 50 songs from each genre, then weighting them for how popular each genre is.
Then, weight movies 70%, music 30%.
Then, adjust the level of the tones across the spectrum to represent the spectrum analysis.
Because a receiver is never asked to make 100W of 17067Hz!
If the THD+n isn't done the way I assumed, then I guess this thread is useless. Or maybe not - the concept could just need to be applied differently.
We'll see