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Jan 18, 2017 at 22:02 comment added yossarian I believe, and I may be wrong, that vibrato helps the sustain of the note, which is another necessary aspect of feedback.
Dec 20, 2016 at 10:55 comment added user2808054 I disagree about vibrato to keep it going: I find this hinders the feedback, whether using tremolo arm or wobbling a finger about a bit. This makes sense to me: the feedback is based on a circular reaction to the note which builds on itself, so changing the note destroys that cycle. How are you finding that vibrato helps ? I must be missng something ..
Jan 25, 2011 at 0:07 comment added Anonymous +1'Use some vibrato to help keep the sound "going"'. I think this is a real important trick. By keeping the string vibrating against the fret you can fine tune the pitch as the resonance sets in to find the right frequency. Even at low volume, with good compression and a sensitive guitar, you can get the right notes to grab hold. I was holding a conversation with mine feeding back as we talked over it one day. Made me love that particular guitar.
Jan 24, 2011 at 23:53 comment added Anonymous The amp doesn't even have to be loud. Creating a feedback loop is simply a matter of transferring the vibration from the guitar to the amp and back, and can result from touching the guitar's body to the speaker cabinet, effectively coupling the vibrations of the two. Then it's a matter of finding the resonating frequencies for the guitar; Hopefully they'll be in the key of the song. Sometimes they aren't, but when they are is when the fun happens.
Jan 24, 2011 at 18:05 history answered yossarian CC BY-SA 2.5