Hi.
24bit is cool, but is a curse too, because hum that was before hidden in noise, now sticks out.
I'm thinking about making a black-box, which would output 50Hz and 150Hz (50Hz rectified) from mains, but at low level, and mix that into mixer, to cancel out low level hum that is present.
I noticed that hum changes depending on units inserted, settings of units, and even changes with time in a day. So why not just mix into master some ANTI-HUM, to cancel out hum of equipment. This could be adjusted as needed, just before hitting REC on final mix record.
There would be outputs for 50Hz, both in phase and out of phase. And rectified 50Hz with filtered harmonics above 150Hz, again in phase and out of phase. There would be just two pots on front panel, one for each frequency. Pot at middle would give zero contribution, turn to left for out of phase, and to right to in phase. Turn more for more level. It would be fed into one channel in mixer. Or maybe stereo version, with additional pan pots for each freqency, going into stereo input on mixer.
What do you think of this idea? Was it ever implemented? Maybe I should patent it? :wink: Or is it just stupid idea, which would not work?
gnd
24bit is cool, but is a curse too, because hum that was before hidden in noise, now sticks out.
I'm thinking about making a black-box, which would output 50Hz and 150Hz (50Hz rectified) from mains, but at low level, and mix that into mixer, to cancel out low level hum that is present.
I noticed that hum changes depending on units inserted, settings of units, and even changes with time in a day. So why not just mix into master some ANTI-HUM, to cancel out hum of equipment. This could be adjusted as needed, just before hitting REC on final mix record.
There would be outputs for 50Hz, both in phase and out of phase. And rectified 50Hz with filtered harmonics above 150Hz, again in phase and out of phase. There would be just two pots on front panel, one for each frequency. Pot at middle would give zero contribution, turn to left for out of phase, and to right to in phase. Turn more for more level. It would be fed into one channel in mixer. Or maybe stereo version, with additional pan pots for each freqency, going into stereo input on mixer.
What do you think of this idea? Was it ever implemented? Maybe I should patent it? :wink: Or is it just stupid idea, which would not work?
gnd