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- Path: sparky!uunet!olivea!hal.com!darkstar.UCSC.EDU!ucscb.UCSC.EDU!indigo
- From: indigo@ucscb.UCSC.EDU (Adam Schneider)
- Newsgroups: alt.guitar
- Subject: Re: Harmonics
- Message-ID: <1jq01aINN8e0@darkstar.UCSC.EDU>
- Date: 22 Jan 93 23:29:46 GMT
- References: <C19yqz.1ABI@austin.ibm.com>
- Organization: University of California, Santa Cruz
- Lines: 39
- NNTP-Posting-Host: ucscb.ucsc.edu
-
-
- In <C19yqz.1ABI@austin.ibm.com> poidoug@austin.ibm.com writes:
-
- >When you pluck a string you don't hear just one frequency you hear several.
- >Touching the string directly above the 5th, 7th, and 12th frets while picking
- >it removes one of those frequencies. This makes tuning the guitar with
- >harmonics easier than tuning it regularly because your ear has less sound to
- >sort through.
-
- >Is this correct?
-
- That sounds about right. But I thought that doing a harmonic removed all
- _but_ one of the frequencies. All the harmonics are at particular ratios
- along the string (one-half, one third, one-fourth, etc.), and I think when
- you put your finger there, you're causing a standing wave in the string,
- with a node right where you put your finger. I think. (There are also
- harmonics way up around the 17th and 19th frets that are the same as the
- ones at the 7th and 5th frets...)
-
- Tuning by harmonics is a zillion times easier than tuning normally, because
- you're essentially dealing with sine waves, which make "beats" when they're
- slightly off from each other. The problem, of course, is that you can't
- match a harmonic on your G string to one on your B string, so I do a 7th
- fret harmonic on the G string and then I pluck the 10th fret on the high E
- string.
-
- I've also heard that tuning by harmonics is _really_ easy with electric
- guitars.
-
- By the way, the standing wave/node thing is a total guess, but I think it
- makes perfect sense. (I'm _not_ a physics major.)
-
- Adam
-
-
- ==-=--=---=----=-----=-------=---------=---------=-------=-----=----=---=--=-==
- Adam Schneider indigo@ucscb.ucsc.edu U.C. Santa Cruz
- Your actions will follow you full circle 'round...
- ==-=--=---=----=-----=-------=---------=---------=-------=-----=----=---=--=-==
-