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Hi, I did some entry of notes using Editable Notation Mode. Upon play back there is quite a delay from the normal time the note should occur. You can see if very clearly on the piano roll I attached. Sounds pretty bad. Is there a cause and solution to this. Its BIAB 2018.

Thanks,
John

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Last edited by bowlesj; 03/26/21 01:30 PM.

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It could be due to several things:

In Options > MIDI/Audio Drivers setup, check the Latency value.

From the help:
"Software synthesizers have some inherent latency, which is the delay between the time a note is played and it is processed by the computer. Older softsynths had noticeable latency, whereas a VSTi/DXi synth using ASIO drivers has very little. This setting is used to synchronize the visual display (notation, chords, virtual piano etc.) with the sound you hear.

Band-in-a-Box automatically sets the latency for VSTi/DXi and some other softsynths.

The [Latency Adjust…] button in the MIDI/Audio Drivers Setup dialog opens the SoftSynth Latency Adjust dialog where you can manually adjust the latency."

There's a video that might help, here:


Search help for 'Quantize', also.


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I watched the video. I suspect that is not the issue because my latency reading is 30 but it is a theory :-) I attached the "Midi/Audio Drivers Setup" screen.

I did the quantize at 100% and it fixed the piano roll. Now that is a huge time saver over what I have done with manual snapping. Thanks so much VideoTrack! It was the 100% that did it. I attached the screen. I am helping a vocalist in our jam group. Here are the instructions I gave him.

To quantize to 100%, Click Melody on the menu. Click Edit melody track, Quantize time adjust, choose Quantize Melody, then set the % strength to 100 so it forces perfect on the beat timing (choose quantize start times only because you need a bit of a gap between notes if they are the same note such as the "One Note Samba" Song). I also left the Resolution per bar at 16.

But ideally it would be better if the delay did not exist. Here is the interesting part. The lead in bar and the 1st bar were entered a long time ago and the delay was not noticeable with my ear. The 2nd and 3rd bar were entered recently and the delay is a lot larger as you can see on the Piano-roll. I am wondering if I may have been running another software at the time and if it is better to have nothing running but BIAB when entering notation. Does anyone have any thoughts on this?

Regarding latency it would be nice to have a latency analysis software that can give a report. Does this exist? I tried google "computer latency analysis software". Its a deep dive :-)

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Quantize.png (23.99 KB, 148 downloads)
Last edited by bowlesj; 03/26/21 01:21 PM.

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John every time I work with BiaB or my DAW I always disable anything that can work in the background (anti-virus, anti-malware, ccleaner, etc) as well as disabling my Ethernet card.


Back in my day the only time we started panic buying was when the bartender shouted "last call"!

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Wow MarioD and thanks. I should try that. I need to be sure I get get all that back :-) Caution is the word :-) I guess the software would come back with a restart. Not sure about the card :-) I often have 2 computers running on my home network. Turning the other one off may help.

Last edited by bowlesj; 03/26/21 01:28 PM.

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Originally Posted By: bowlesj
...I often have 2 computers running on my home network. Turning the other one off may help.

Probably not, but you can certainly try it.


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The way I see it latency should have zero impact on this issue because it is where we click on the screen that determines the time allocation for the note (not when we click and how much time it takes to get to the disk drive). Since PianoRoll mode has a snap mode this should have a snap mode (click behind the line - to the right - and it places it perfectly at the location the line suggests). It seems very strange to me that this idea could have been missed. So maybe there is a snap mode.

Last edited by bowlesj; 03/26/21 03:30 PM.

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Hi John,

I'll ponder the cause. At the moment, I can't add anything to what's already been discussed.

I can help with a solution, though...

Under "Melody" on the top menu, Select...

1. Edit Melody Track

2. Quantize, Time adjust

3. Timeshift melody (ticks)

4. Use positive values to push the melody later into the song and negative values to drag the melody to an earlier position in the song.

5. Keep in mind that 120 ticks = one quarter note

6. So... from the Piano Roll view, estimate how much you need to shift the melody in terms of quarter notes and multiply that by 120.

Hope this helps,
Noel




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Hi Noel, great minds think alike :-) I actually did something similar (see prior post and picture).

I checked for a snap mode. Nothing found. I will probably create a feature request for it. I am not sure why anyone would not want this so it seems more like a bug fix to me.


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Originally Posted By: bowlesj
... snip ... Regarding latency it would be nice to have a latency analysis software that can give a report. Does this exist? ... snip


John,

If you using a non DXi soft synth, try the Latency Test. It's a style that runs audio on one side of the stereo channel and the midi soft synth on the other side of the stereo channel

Attached Files (Click to download or enlarge) (Only available when you are logged in)
Clipboard01.png (33.98 KB, 123 downloads)
Latency button highlighted.
Clipboard02.png (8.9 KB, 123 downloads)
Latency Adjust screen

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Thanks Jim. According to the video I watched my Synth is a DXi. The popup on my BIAB shows CoyoteWT. My understanding is this overrides the "MS GS Wavetable Synth". Is this not correct?

But again as per my last post the entry of notes should default to snap and not be effected by latency at all. The only latency should be on playback if any. Here is an analogy. Would you like going to a banking machine and finding you had less money deposited because the machine was slow one day. No. If it takes longer to get there you should still get the same deposit amount. I think like a programmer because am a programmer :-)


Last edited by bowlesj; 03/26/21 04:13 PM.

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Originally Posted By: bowlesj
Wow MarioD and thanks. I should try that. I need to be sure I get get all that back :-) Caution is the word :-) I guess the software would come back with a restart. Not sure about the card :-) I often have 2 computers running on my home network. Turning the other one off may help.


You're right, every thing will come back except the Ethernet card. Disable the Ethernet card via the Device Manager then minimize the Device Manger window and it will place it on the taskbar. Prior to either powering down or doing something else other than music just click on the minimized window and activate the Ethernet card. Easy-prezzie!


Back in my day the only time we started panic buying was when the bartender shouted "last call"!

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Thanks MarioD. Maybe I will do some speed tests to see if I can actually cause a very large delay by running a boatload of software in loops. Fifteen MS-Access programs all in an infinite loop. This would be handy because it would prove that latency is in fact the problem.

Last edited by bowlesj; 03/26/21 04:37 PM.

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John,

There is a snap mode. It's found in Piano Roll. It will set to many possible beat values.

In Piano Roll Mode, you could certainly activate this, select all the notes and then drag the notes to the beat or part of beat you wanted.

That didn't occur to me last night when I typed my reply.

Regards,
Noel

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Thanks Noel,

Yes, I used the piano roll snap mode. So in total what I did was this.
The song style is Latin giving 1/16ths in the editable notation mode.
I entered the straight 1/8ths only for the first chorus using editable notation mode.
I then quantized the melody in 1/16th at 100% to get those to perfectly line up.
I tested this by listening and it worked.
I then went back to editable notation mode and used this jump to video method to enter the first set of triplets.
I then went to piano roll mode using the triplet snap to fix the triplets.
I then copied the triplets out to other parts of the 1st chorus to complete the chorus.
----Again the editable notation mode needs a snap to fix to avoid the extra piano roll steps.
----It may have been too tricky for them to program the reading of the screen to do the snap to.
----At least the visual notation snaps to the vertical lines in editable notation mode.
I then used the copy special process to copy the 1st chorus to the 2nd chorus then again to the 3rd chorus.
(see the attached copy special dialog box settings I used).

In the copy special dialog box it shows something I can not figure out.
The only other way I have figured out to copy to the other choruses is to
set the choruses to one then set the choruses to a higher value and enter yes to copy the melody.

John



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Last edited by bowlesj; 03/27/21 01:54 AM.

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And to add to the above post,

For swing tunes to quantize you need to humanize to swing feel. This fixes it except it is a tiny bit late. After you have fixed it this way, if you want to make the start times to start exactly on the triplet go to the Quantize melody dialog box, choose a Resolution of 12 to get you 4 beats of triplets per bar and choose 100% and only quantize the start times so that songs like "One Note Samba" do not get screwed up such that the rhythmic same notes do not sound like one long note. See the attached picture.

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Last edited by bowlesj; 03/27/21 04:46 AM.

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Hi John,

That's very impressive problem solving! As I read it through, I picked up a few things about BIAB that I didn't know. Thanks for taking the time to write it up so clearly.

I'm glad it's sorted out.

All the best,
Noel


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Hi Noel,

Recently I have been reminding myself on a daily basis to see every frustration as not a challenge but rather a fun game. There are in fact no exceptions to this including both the game of trying to maximize the length of life and the game of minimizing or even eliminating the pain of death itself. This approach to thinking makes everything easier and more fun. I don't always play the game(s) well but it gets better with practice. Even loosing a game can be treated as a fun mental game it itself. This was just another fun game for me. It made finding the best solution I could find easier.

Hope this gives back.

John

Last edited by bowlesj; 03/27/21 02:41 PM.

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Interesting. I just entered the notes to another swing song using the editable notation mode. I checked the piano roll and it literally entered the start of every single one perfectly (just as if I was using snap mode). The end times could be better but they are often dead on and even when not dead on not a problem. I as usual have a lot of other programs running. Might this be a random bug? Did my quantize work on the prior song do something?

Last edited by bowlesj; 03/27/21 03:14 PM.

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John,

Like you, I get caught up in the problem solving because it's fun for me.

Over the years, I've noticed with BIAB that a couple of settings don't seem to kick in until the second use. I'm not sure why that is and I can never remember which ones are involved. I've come across this phenomenon with other programs too (not just PG Music ones).

Regards,
Noel




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