[Harp-L] Acoustic Feedback (newbie)



I am wondering why I get feedback on my notebook speakers when simply playing my harmonica in front of them. I am practising throat vibrato on hole 2, and if I resonate a while, I can occasionally get the feedback happening. I thought feedback had to do with an amplified source, such as a microphone, not simply just another noise source??? In anticipation.
Reg
Tony Renshaw






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