1. Regarding playback:
Musescore is primarily a music notation software. However, over time, it has been improved since the days when "you can play your score with any instrument you want, so long as it's piano".
Nowadays, the soundfont of Musescore's synthesizer can be changed. Please see: http://musescore.org/en/handbook/soundfont
You may find a soundfont available which has what you are looking for.
Another way that I have seen (and the way tablature notates mute) is by using an 'x', or cross, in place of the note head.
This can be done through note properties (right click on note - properties - note head group).
Assuming you find a soundfont that has the soind you want, the way you'd be able to set this up in the current 1.3 version is to edit instruments.xml in your installation so that both "regular" and "palm mute" soinds are oncluded in the same instrument definition. As well as any other special soinds you might want to use. Look at trumpet or violin to see how this done - both provide multiple sounds. Once this is done and you restart MuseScore, you'll be able to create ordinary staff text markings to switch between soinds, and right clicking them and choosing "staff text properties" will allow you to choose from the different sounds you configured.
In 2.0, you wouldn't need to mess with instruments.xml. As long as you had suitable soinds available, you could use the new "instrument change" change to switch sounds.
Comments
for playback, or notation.
In reply to Muting effect... by Jm6stringer
Both.
In reply to Both. by alecinminn
1. Regarding playback:
Musescore is primarily a music notation software. However, over time, it has been improved since the days when "you can play your score with any instrument you want, so long as it's piano".
Nowadays, the soundfont of Musescore's synthesizer can be changed. Please see:
http://musescore.org/en/handbook/soundfont
You may find a soundfont available which has what you are looking for.
2. Regarding palm mute notation:
The following link describes the notation for palm mute - 'PM', followed by a line.
http://musescore.org/en/node/6461#comment-18281
Another way that I have seen (and the way tablature notates mute) is by using an 'x', or cross, in place of the note head.
This can be done through note properties (right click on note - properties - note head group).
HTH
In reply to OK... by Jm6stringer
Assuming you find a soundfont that has the soind you want, the way you'd be able to set this up in the current 1.3 version is to edit instruments.xml in your installation so that both "regular" and "palm mute" soinds are oncluded in the same instrument definition. As well as any other special soinds you might want to use. Look at trumpet or violin to see how this done - both provide multiple sounds. Once this is done and you restart MuseScore, you'll be able to create ordinary staff text markings to switch between soinds, and right clicking them and choosing "staff text properties" will allow you to choose from the different sounds you configured.
In 2.0, you wouldn't need to mess with instruments.xml. As long as you had suitable soinds available, you could use the new "instrument change" change to switch sounds.
In reply to OK... by Jm6stringer
I'll sift around in Soundfont for a bit. The notation tip helped for the time being, though. Thanks.