- #1
Planobilly
- 440
- 105
Hi,
I am frequently concerned with audio "noise" coming from a guitar amp. I can inject a 500hz signal for example and obviously see that signal at the output transformer. There are other frequencies also being produced by the amp at the same time which are typically hard to see or not displayed at all. For example low amplitude 120Hz.
Is it possible to build some sort of filter that would filter out all frequencies greater the say 150Hz? The signal generator would be driving the amp at 500hz but I don't want to see that signal on the scope.
I am wanting to look for 60Hz, 120Hz signals and measure their amplitude. I also want to look for frequencies greater than than 20KHz.
Thanks,
Billy
I am frequently concerned with audio "noise" coming from a guitar amp. I can inject a 500hz signal for example and obviously see that signal at the output transformer. There are other frequencies also being produced by the amp at the same time which are typically hard to see or not displayed at all. For example low amplitude 120Hz.
Is it possible to build some sort of filter that would filter out all frequencies greater the say 150Hz? The signal generator would be driving the amp at 500hz but I don't want to see that signal on the scope.
I am wanting to look for 60Hz, 120Hz signals and measure their amplitude. I also want to look for frequencies greater than than 20KHz.
Thanks,
Billy