'Sib. 7.5: Bug report: Quartertones combined with articulation signs create wrong pitches'

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Sib. 7.5: Bug report: Quartertones combined wit... - MadMusicologist, 12 Jan 08:06PM
     Re: Sib. 7.5: Bug report: Quartertones combined... - MadMusicologist, 13 Jan 05:10PM
         Re: Sib. 7.5: Bug report: Quartertones combined... - Robin Walker, 16 Jan 09:11PM
             Re: Sib. 7.5: Bug report: Quartertones combined... - Bob Zawalich, 17 Jan 06:08AM
                 Re: Sib. 7.5: Bug report: Quartertones combined... - MadMusicologist, 18 Jan 05:39AM
                     Re: Sib. 7.5: Bug report: Quartertones combined... - Robin Walker, 18 Jan 12:49PM
                         Re: Sib. 7.5: Bug report: Quartertones combined... - MadMusicologist, 25 Jan 05:21AM

Sib. 7.5: Bug report: Quartertones combined with articulation signs create wrong pitches
Posted by MadMusicologist - 12 Jan 08:06PM (edited 13 Jan 05:17PM)
For certain instruments, when using quartertones, accents cause wrong pitches. Especially oboes, with accent >.
Then I found that sometimes using legato slurs, or even the technical expression "legato" itself, caused the violins either to transpose a bit, or grace notes are added.
!!! This latter bug is especially tricky, as it is not to be heard during playback, but only when having exported the audio file.
Please check the file and crossread with the sib score attached: https://drive.google.com/file/d/0B0LM1K_xIu8lX0s2U2ZPTU15QjA/view?usp=sharing
Please refer to the "foreword" in the score for the described errata.
Thankx.
Attachment QuartertoneBugsDemo.sib (145K)
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Re: Sib. 7.5: Bug report: Quartertones combined with articulation signs create wrong pitches
Posted by MadMusicologist - 13 Jan 05:10PM
To make sure this thing is going to be noticed, I also placed it at Ideascale:
http://sibelius.ideascale.com/a/dtd/Quartertone-bugs/146142-22221?submitted=1
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Re: Sib. 7.5: Bug report: Quartertones combined with articulation signs create wrong pitches
Posted by Robin Walker - 16 Jan 09:11PM
It would have been helpful if you had told us which Player, Sample Library, and SoundSet were in use, as that information is necessary in order to reproduce the issues.

It is easy to understand the issue with slurs.

Quarter-tone playback has been achieved in this score by inserting MIDI Pitch Bends in the music: these take effect at the time of the start of the note to which the pitch bend is attached. In the Playback Dictionary a slur is defined as extending the duration of a note to 102% of its normal period: this means that the previous extended note is still playing when the pitch bend for the next note takes effect. So you hear a little "catch" or "grace note" when the pitch bend alters the previous extended playing slurred note.

To fix this, simply redefine (in the Playback Dictionary) slurs (Binderbogen darüber) to play a note for 100% of its normal period, rather than 102%.

It is possible that legato instructions might have a similar effect.

The issue with the oboe with simultaneous accents and pitch bends affects only Oboe 1 in the Sibelius 7 Sounds Library, not Oboe 2 in that library. Since you have already made many forced instrument assignments in the Sibelius Mixer, you can work around the oboe problem by forcing selection of the Oboe 2 variant of the same sound, in the Sibelius Mixer.

In general, if you are going to use MIDI Pitch Bends, then you should delete the item "b" in the Playback Dictionary Staff Text list, otherwise the pitch bend (letter B) will also be interpreted as selecting the +bass version of the instrument sound. This had me puzzled for a while.

--
Sibelius 7.5.1/7.1.3/6.2/5.2.5, PhotoScore Ult 7.0.2, Dolet 6.3 for Sibelius, Windows 7 32-bit SP1 4GB, Windows 8.1 64-bit 16GB.
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Re: Sib. 7.5: Bug report: Quartertones combined with articulation signs create wrong pitches
Posted by Bob Zawalich - 17 Jan 06:08AM
Lovely detective work, Robin!

--
Bob

An experienced user of Sibelius. Sib 1.2 - 7, Windows 7 Pro SP 1 64 bit, 4 G RAM. Year 2015.
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Re: Sib. 7.5: Bug report: Quartertones combined with articulation signs create wrong pitches
Posted by MadMusicologist - 18 Jan 05:39AM (edited 18 Jan 05:42AM)
Thanks for your suggestions, Robin, which I will put effective immediately.
As you have seen the soundset I am using, I guess I will not have to tell you that the one I am using is basically taken from Siblius Sounds 7, enriches by Garritan Pers. Orch. 3 with Aria Player, and, for the Gong sample, I am using the SFZ+ Pro player. :-)
When you say Oboe 2 is not affected by the wrong pitch alteration, I should ask for a patch concerning Oboe 1, shouldn't I? (Again, I will write that comment at IdeaScale on behalf of efficiency.)
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Re: Sib. 7.5: Bug report: Quartertones combined with articulation signs create wrong pitches
Posted by Robin Walker - 18 Jan 12:49PM
> As you have seen the soundset I am using

No, I haven't: that's why I asked for that information.

Playback configurations are not kept within score files, so just posting a score file does not convey any of this information. The moment one opens a Sibelius score on a different computer, the Sibelius Mixer adapts itself to whatever playback configuration is available there, so custom sample library assignments are lost.

For the future, if you need help with any further issues, it's best to prepare a "simple test case" short score which demonstrates the problem, rather than submitting a full orchestral score.

One of your reported problems appeared to require one to export the score to audio, and then listen to the result. Volunteers don't have time to do that sort of thing with a full orchestral score. A simple test case would generate more answers more quickly.

--
Sibelius 7.5.1/7.1.3/6.2/5.2.5, PhotoScore Ult 7.0.2, Dolet 6.3 for Sibelius, Windows 7 32-bit SP1 4GB, Windows 8.1 64-bit 16GB.
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Re: Sib. 7.5: Bug report: Quartertones combined with articulation signs create wrong pitches
Posted by MadMusicologist - 25 Jan 05:21AM
I see. I shall try in future to follow your explanations.
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Messages in this thread

Sib. 7.5: Bug report: Quartertones combined wit... - MadMusicologist, 12 Jan 08:06PM
     Re: Sib. 7.5: Bug report: Quartertones combined... - MadMusicologist, 13 Jan 05:10PM
         Re: Sib. 7.5: Bug report: Quartertones combined... - Robin Walker, 16 Jan 09:11PM
             Re: Sib. 7.5: Bug report: Quartertones combined... - Bob Zawalich, 17 Jan 06:08AM
                 Re: Sib. 7.5: Bug report: Quartertones combined... - MadMusicologist, 18 Jan 05:39AM
                     Re: Sib. 7.5: Bug report: Quartertones combined... - Robin Walker, 18 Jan 12:49PM
                         Re: Sib. 7.5: Bug report: Quartertones combined... - MadMusicologist, 25 Jan 05:21AM