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## Re: wah-wah-effect

 From: Stefan Thomas Subject: Re: wah-wah-effect Date: Mon, 1 Mar 2010 09:44:30 +0100

Dear community,
I made a second attempt to create a symbol for the so called wah-wah-effect.
My first question:
Would You think, this is the common way to notate it?
My second question:
I would like to make the textspanner longer, but this, unfortunately, doesn't work.
Here is my snippet:

%%%%%%%%%%%%%% BEGIN %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\version "2.12.2"

wah = {
\override Voice.TextSpanner #'shorten-pair = #'(0 . -8) %this doesn't do anything, why?
\override Voice.TextSpanner #'style = #'dashed-line
\override Voice.TextSpanner #'(bound-details left text) = \markup { \musicglyph #"scripts.stopped" }
\override Voice.TextSpanner #'(bound-details right text) = \markup { \musicglyph #"scripts.open" }
} %
harmonmute = ^\markup { \whiteout "harmon mute" }
music = {
\time 2/4  \wah
\clef "treble"   f''16  \harmonmute ( -> \mf [ es''16 ) r16 b'16 -. ] r16 des''16 -. [ r16 as'16
( ~ -> ] as'16 [ ges'16 ) -. \context Voice << {c''16 -> -. \sfz ]} {s16 \startTextSpan   }>> r16\stopTextSpan  r4
}
\new Staff \music
%%%%%%%%% END %%%%%%%%%%%%%%%%

Ah, you want a dashed hairpin.  Is this to notate a gradual opening/closing?  I would not normally expect to see a dashed hairpin but rather simply a dashed line between the '+' and 'o'.  This means gradual open/close.  It seems that you want something like 'o > +' or '+ < o', correct?  I suppose you could mark one note with '+' and another with 'o' and place your hairpin between.  Again, however, as a trombonist I would find this notation non-standard and potentially confusing.  I don't know enough about your notation requirements to understand why you would want or need to notate it this way.

-David

----- Original Message -----
Sent: Sunday, December 27, 2009 12:13:19 PM GMT -05:00 US/Canada Eastern
Subject: Re: wah-wah-effect

Dear David,
I found out, that I can get a dashed hairpin with \once \override Hairpin #'style = #'dashed-line
What I would like to do is getting a + and an "o" at the beginning and the end of the hairpin.
The "o" is easy to get with
\override Hairpin #'circled-tip = ##t

But how I can do it with the "+"-sign?

I'm not sure exactly how you want your wah-wah effect to appear, but for starters you can go here:

http://lilypond.org/doc/v2.13/Documentation/notation/the-feta-font#index-Feta-font

...to find the glyphs you need. The ones you need are listed under "Script glyphs." One is "stopped" (looks like '+') and the other is "flageolet" (looks like a small circle). There is also "open" which looks like a small letter 'o'. I've normally seen the little circle (I'm a trombonist). I don't know how to do this without experimenting with it but if you want '+O' I suppose you could create a script called 'wah' or something and combine them together side-by-side. This would mean 'wah' on a single note. If you wanted the effect to span two or more notes I think you should be able to put the '+' over one note, the 'o' over the other and put some sort of dotted/dashed spanner between them.

Sorry I can't be more specific at the moment but I hope this is helpful,

David

----- Original Message -----
From: "Stefan Thomas" < address@hidden >
Sent: Sunday, December 27, 2009 5:51:19 AM GMT -05:00 US/Canada Eastern
Subject: Re: wah-wah-effect

Dear community,
I've created a little image (with another program) to illustrate what I'm thinking of.

2009/12/27 Stefan Thomas < address@hidden >

Dear lilypond-users,
does someone of You know, how to produce a proper notation for wah-wah effect for trumpet or trombone?

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