02-02-2019, 12:00 PM
Yes, that one is THD+N as it is based on a notch-filter.
Few audio test sets can drive a speaker directly* - you will need an amplified speaker. Anything will do - even crappy PC speakers, for example. The quality is unimportant.
* Some audio test sets include a speaker, and sometimes a headphone socket which could be used to drive an external speaker. They are relatively rare.
I ought to apologise for repeating myself, but I won't. It's so important to helping your understanding that you really must do it as soon as possible. And do it always. Trust me
You might have seen the one I built: https://www.markhennessy.co.uk/activespeaker/ - something like that ought to be a walk in the park for someone with your skills and experience. This unit is usually plugged into the Y output of my 'scope (something else that audio people hardly do, and that's completely mystifying), but when I'm doing distortion measurements I swing the cable over to whatever instrument I'm using.
Keep up the good work!
Few audio test sets can drive a speaker directly* - you will need an amplified speaker. Anything will do - even crappy PC speakers, for example. The quality is unimportant.
* Some audio test sets include a speaker, and sometimes a headphone socket which could be used to drive an external speaker. They are relatively rare.
I ought to apologise for repeating myself, but I won't. It's so important to helping your understanding that you really must do it as soon as possible. And do it always. Trust me
You might have seen the one I built: https://www.markhennessy.co.uk/activespeaker/ - something like that ought to be a walk in the park for someone with your skills and experience. This unit is usually plugged into the Y output of my 'scope (something else that audio people hardly do, and that's completely mystifying), but when I'm doing distortion measurements I swing the cable over to whatever instrument I'm using.
Keep up the good work!
