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BFTS 特許 エレキベースの場合 抜粋 [BASS]

Inventors:Feiten, Howard B. Back, Gregory T.

Application Number: 11/081970
Publication Date: 02/20/2007
FilingDate: 03/16/2005

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Method and apparatus for fully adjusting and providing tempered intonation for stringed,
fretted musical instruments, and making adjustments to the rule of 18

United States Patent 7179975

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Fretted Electric Bass Guitar

Note  Open (Cents)  12th Fret

G   00         -01
D   00         -01
A   00         +01
E   00         +01 (fretted “B”, 7th fret)
B*   00         +01 (fretted “F# , 7th fret)

NOTE:
Standard four-string fretted bass uses string G, D, A, E (high to low)
*Low B string is included on five- and six-string fretted basses.

The following steps 1-15 apply to fretted five- and six-string basses.
The following steps 1-12 apply to fretted four-string basses.

With regard to fretted electric bass guitars, the following steps are preferred for optimal tempering and intonation.

1. Tune “G” string to pitch (3rd octave), 00 cents. (FIG. 17)

2. Press string at 12th fret. (FIG. 18)

3. Compare “open” string pitch with 12th fret pitch.
Adjust saddle (FIG.35), so that the 12th fret pitch reads “-01” cents on an equal tempered tuner.

4. Tune open “D” string (3rd octave) to pitch, 00 cents. (FIG. 17)

5. Press string at 12th fret (FIG. 18)

6. Compare “open” string pitch with 12th fret pitch. Adjust saddle (FIG.35), so that 12th fret pitch reads “-01” cents on an equal tempered tuner.

7. Tune open “A” string (3rd octave) to pitch 00 cents. (FIG. 17)

8. Press string at 12th fret. (FIG. 18)

9. Compare open string pitch with 12th fret pitch. Adjust saddle (FIG. 35) so that the 12th fret pitch
reads “+01” cents on an equal tempered tuner.

10. Tune open “E” string (2nd octave) to “00” cents. (FIG. 17)

11. Press string at 7th fret (not at 12th fret!). (FIG. 18)

12. Compare open string pitch with 7th fret pitch. Adjust saddle (FIG. 35) so that 7th fret pitch reads “+01” cent on equal tempered tuner.

13. Tune open “B” string (2nd octave) to 00 cents. (FIG. 17)

14. Press string at 7th fret. (FIG. 18)

15. Compare open string pitch with 7th fret pitch. Adjust saddle (FIG. 35) so that 7th fret pitch reads “+01” cent on equal tempered tuner.

The best results are obtained when used in conjunction with the Rules of Compensation previously described.

=BASS部分のみ抜粋=
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