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Timing errors on playback- can you help please?


I'm relatively new to SmartScore but already I appreciate its power and find it very useful.

quote:

However, I have run into a problem: on playing a SmartScore sound file, while the notes and pauses seem fine on paper, the timing seems to vary during the piece, with a few notes sounding much longer than they should. It’s as though the tempo changes at certain points. I’m sure I’m making a classical beginners error somewhere along the line and I wonder if anyone can suggest a few things to look out for.

I’d be really very grateful for any advice you can give.

Many thanks

John



SmartScore reads and applies tempo markings (Allegro, Lento, rit., accel, etc.). If they appear throughout the score, you will detect a change of tempo during playback. The same is true of metronome markings (e.g 1/4 note = 120). Search for these wherever you encounter unusual tempo changes during playback.

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Last edited by Tech Moderator, 10/21/2018, 3:24 pm
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Re: Timing errors on playback- can you help please?


John,
Does your score have markings instructing tempo changes? Things like the marks on the Tempo pallette and its flyouts, or the Fermata mark on the Articulations pallette? SSX can usually recognize these marks and they do affect the tempo. The degree to which they affect it can be varied by clicking on the mark with the Properties tool (arrow) active.

There is also a midi continuous controller that affects tempo. You can display and change this controller in the midi piano roll view.

There is additional information about all of these in the downloadable PDF manual "Using SmartScore X". Well worth the time to check them out.

If there don't seem to be any marks that affect tempo or other crazy changes in the tempo CC, post back.

Last edited by tlwebb, 6/24/2015, 8:43 am


---
SSX Pro V10.3.3.; WinXP-SP3 (32-bit)
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John Brown23 Profile
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Re: Timing errors on playback- can you help please?


Thank you very much for your reply. I'm sorry for the delay in replying but I've not been able to get to the PC most of the day. I will download the pdf you mentioned and study it carefully. Hopefully that will sort it out and I'll let you know how I get on.

Again many thanks

John
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Re: Timing errors on playback- can you help please?


Are you playing back from within SmartScore or are you creating a WAV file and listening to it. The WAV file generation is problematic especially if you are using the Microsoft MIDI synth rather than the VST/AU with the Aria player according to some other posts.

Another issue is that legatos (Slurs)play notes longer than their normal duration. This is default IIRC. This means the portion of the duration that is longer than the normal value can clash with the next note(s). It is easily fixed by clicking on a slur marking with the big Properties arrow tool and taking the steps to set the extra time to zero and to check the box so it will do that as default.

---
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Windows 10 - since officially released, Win 8.1, Win 7 before it
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Re: Timing errors on playback- can you help please?


I can't thank you both enough for all your help. It really is greatly appreciated!
Many thanks again
Phil
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Re: Timing errors on playback- can you help please?


I was having this same problem on a score I had recognized. In preparing for playback, I always delete all slurs. During playback, at a certain point in one measure, notes in the Treble clef began to hold a bit longer, overlapping the playing of the next note just a bit, and creating a dissonance. I tried all the things suggested by others concerning this topic, but nothing helped.

In looking for extra articulations by holding down the shift key, I eventually noticed four extra dots ("control points") in the treble clef that didn't align with anything else. Nothing appeared to be attached to them, but they were at the exact place where things started going wrong. I highlighted and deleted the area encompassing those four dots. Playback was then perfect.

So try that where the problem seems to begin > if you hold down the shift key and notice "dots not sposta be dere", it could be a slur mentioned by ZootS, only hidden.
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Re: Timing errors on playback--can you help please?


Hello, everyone! I am new to this program, and must admit I am a bit new to MIDI files in general, but I hope someone here can help me.

I have some sheet music that I would very much like to convert to MIDI format, and then play on my personal QRS PNOmation player piano. I am finding my way around importing and editing the sheet music OK (although I would still like to know how to add control for the sustain pedal to the MIDI file in this program).

The QRS player system will play MIDI-0 files that I upload to it. However, two of the three pieces that I have worked on in SmartScore MIDI come out playing with the left and right hands playing out of sync--badly. No matter what I do with the ENF file, or the way I export it, or even flattening it down to a single channel in third-party programs, once the timing errors show up, there's no way to get rid of them that I can find.

Any suggestions? Thank you for your time, and take care!

Best,
Jody
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Re: Timing errors on playback- can you help please?


J

On/Off Midi CC64 (ContinuousController64) is the "Sustain Pedal" control. It's not clear from your post whether your scores have pedal marks that are not being recognized or if you want to add sustains to a score without them.

SSX will recognize pedal markings in a scanned score if you check the "Pedals" item in the recognition options tab of the Reconize dialog.

If the score has no pedal marks, you can add them to the score after recognition using several of the tools on the "Text and Tools" palette.

If you want to add/alter/remove pedal control to a midi file, open the midi file in SSX and then a new Piano Roll "Midi View" (View->NewMidiView, Type:Piano Roll) of the staff you want the sustains on, and in the Controller Pane at the bottom (defaults to CC7-Volume) select "64-Damper Pedal" from the resulting list.

Hope this helps to get you started. If you don't already know this, the General Midi controller parameters are integer values from 0 (zero) to 127. For on/off controllers like this one the values are 0(OFF) or 127(ON).

There are many very helpful sources of information about the General MIDI specification on the internet.

As to your timing issue: is the playback from within SSX out of time as well, or just in the exported midi file playback in your QRS piano?

Last edited by tlwebb, 9/27/2018, 9:41 am


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Re: Timing errors on playback- can you help please?


Thank you for your information on the sustain pedal. The timing errors only show up on the piano; however, the system will play other MIDI-0 files just fine. I've literally sampled hundreds of MIDI files, and only have encountered playback issues with a very few, including two of the three MIDI files washed through SmartScore; the third file, which didn't encounter playback issues, seemed to be a simpler melody in the initial sheet music.

I strongly suspect that when the sheet music is imported into an ENF file, which automatically creates multiple channels, etc., all of which have pans automatically set in them, this then throws off the left hand/right hand timing in playback on the piano.

Any suggestions on this would be very much appreciated. Thanks!

Best,
Jody
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Re: Timing errors on playback- can you help please?


You may be better off reporting your LH RH problem with MIDI file to Musitek support. They don't really follow this forum for problem resolution.

Does the errant MIDI file play properly on other devices such as your computer (using SS as the player and then trying another app such as Media player (Windows)), other keyboard, etc.

Can you within SS MIDI (I don't have it) look at the data in the piano-roll or other views and see if and where the misalignment starts. If the file data is correct then it may be some kind of a latency build up in the hardware.




---
SmartScore ProX2 - since it came out, SmartScore ProX before it
Windows 10 - since officially released, Win 8.1, Win 7 before it
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