I was reading an article on load modulated ripple where they say:
"For op-amp audio applications, the load-modulated ripple problem is not critical, because it means that the power rails will fluctuate with the music, which affects the music but it’s complementary to it. The effect is a “flabbier” sound, and an increase in stereo crosstalk. Contrast a constant 120 Hz ripple like you get from some wall power supplies: this will add a constant 120 Hz undertone to the music, which is far more audible."
I don't really understand, if something affects the sound & makes the sound Flabbier as written, isn't this an issue?
By flabbier do they mean the amplifier is slower to respond, like voltage sag in the old guitar amps etc?
What amount of modulation becomes audible in high quality amps?
If the amplifier can respond as quick as the demand calls for, isn't this best?
If someone has the time could they explain (PSRR) power supply rejection ratio, with an example in Laymans terms so I can understand a bit easier.
Cheers
"For op-amp audio applications, the load-modulated ripple problem is not critical, because it means that the power rails will fluctuate with the music, which affects the music but it’s complementary to it. The effect is a “flabbier” sound, and an increase in stereo crosstalk. Contrast a constant 120 Hz ripple like you get from some wall power supplies: this will add a constant 120 Hz undertone to the music, which is far more audible."
I don't really understand, if something affects the sound & makes the sound Flabbier as written, isn't this an issue?
By flabbier do they mean the amplifier is slower to respond, like voltage sag in the old guitar amps etc?
What amount of modulation becomes audible in high quality amps?
If the amplifier can respond as quick as the demand calls for, isn't this best?
If someone has the time could they explain (PSRR) power supply rejection ratio, with an example in Laymans terms so I can understand a bit easier.
Cheers