Hi guys,
I had a (admittedly very) quick search and couldn't find any info on a question I've been wondering to myself the past few days. From a signal noise perspective, is it better to vary the gain of an input amplifier to alter the volume (by having a pot form R1 and R2 in a non-inverting op-amp circuit) , or is it best to have a fixed maximum gain amplifier and have a pot form a simple potential divider at its input? I'm thinking the variable gain option is better, due to the fact you won't be amplifying noise at the same rate at lower volumes.
Cheers,
Dan
I had a (admittedly very) quick search and couldn't find any info on a question I've been wondering to myself the past few days. From a signal noise perspective, is it better to vary the gain of an input amplifier to alter the volume (by having a pot form R1 and R2 in a non-inverting op-amp circuit) , or is it best to have a fixed maximum gain amplifier and have a pot form a simple potential divider at its input? I'm thinking the variable gain option is better, due to the fact you won't be amplifying noise at the same rate at lower volumes.
Cheers,
Dan