Strange Rendering Bug...

[declassified]

I just wanted to render a tune, which contains of layers of 3 orchestra samples and a bassline.

Tracktion renders the song, but implies some strange noise sounding like a old crappy hair dryer.

Listen yourself...
http://people.freenet.de/nachtgoblins/p ... vetest.mp3

All there should be is the bass and an orchestral kinda pad. Where does that noise come from?

[edelweiss]

You might want to try this. It seems to work for me...

When you open the "render" dialoge, you should deselect "normalize" then select "adjust level based on RMS" this will make a settings box and slider appear. You might have to try a few test renders to get the level you need. usually -15 to -20 works for me.

I'm not sure why normalize works the way it does, but I don't worry about it much when I can work around it.

Hope this works for you too.
Good Luck.

[declassified]

Unfortunately it didn't help.

I tried -20 and the level is ok, but the noise won't go away

[declassified]

Ok, found a workaround (a bad one, though).
Just connectes the soundcard's output to its input, set the latency to 2048 samples, created a new track, connected the input to it, set end-to-end to off and started recording.
The recorded wav file was located in the project's folder and is the rendered song.

[Crossinger]

Can you discover where the noise comes from? Let's assume it isn't a problem of the rendering itself, but rather one of the used instruments. Ord did you use audioclips instead of VSTi's?

You could try to mute single tracks and render again until you have found the troublemaker. Or you could start your song one beat after 1/1, because sometimes starting a song from 1/1 causes some hassle while rendering...

Just a few hints...

HTH

J.

[Panda]

i've had a similar problem with a recent project, and someone here told me to try to render it at playing speed, that might work (didn't for me though)...

[declassified]

Can you discover where the noise comes from?

The troublemakers are the 3 tracks with the orchestra pad. The first of them contains the original, the second is pitched one octave up, the third track two octaves up. You can hear it if you pay attention to the orchestra. The noise only appears while the orchestra tracks are playing their audio clips.
First I thought about leaving that noise and selling the whole thing as an "ambient" track I'm sure the KvR audience would have liked it

i've had a similar problem with a recent project, and someone here told me to try to render it at playing speed, that might work (didn't for me though)...

Already tried that, but didn't work for me. Thanks anyway for the hint.

[Crossinger]

i've had a similar problem with a recent project, and someone here told me to try to render it at playing speed, that might work (didn't for me though)...

Already tried that, but didn't work for me. Thanks anyway for the hint.

Hmm, I must confess: I'm running out of ideas...

The hint with the rendering at single speed can't work this time, because it's designed as a workaround for VSTi's which can't cope with Tracktion's Hi-speed rendering!

J.

[AndrewSimon]

If the render at x1 speed didn't help then you most likely have some ghost notes in the midi pattern.
Did you imports any midi files? Did you sliced up/ joined any midi files?
These actions can create sometimes these problems.

Instead of starting to hunt for these notes just create a simple midi file with the mouse and see if the problem disappears with the newly created clean midi file.

If it does then you will be more convinced that this "is" the problem.

There are several ways to track these down.
If you can limit polyphony in the VSTi then set it lets say to 3 notes (depends on the material) and just play the track. You can usually detect the location of the problem this way.
Just listen for something that doesn't sound right and it's out of the general pattern like a sudden quite part or a chord that just sounds funny.
Once you found the location zoom in hard and start scanning.

The other way is to play the entire track and listen to the "stuck" note(s) , try to figure out the key they are in.
Now that you narrowed it down to one or two keys it will be easier to zoom and visually scan the midi file one that key only.

Good luck
(I hate these problems)

[Crossinger]

If the render at x1 speed didn't help then you most likely have some ghost notes in the midi pattern.

I understood from his description, that there's no Midi at all - just audio clips!

The noise only appears while the orchestra tracks are playing their audio clips.

So any Midi-troubleshooting can be left aside...

J.

[Mr. Tingle]

Might be relavent:

Select a midi clip, select delete content, select delete content before the start and after the end of the clip.

Do this to all you midi clips.

You'd be surprised at the problems this remedies.

[cbit]

are any of your audio clips 'sped up' at all? played at a higher speed than normal?

tracktion has problems rendering audio clips that have been set to play back at increased speeds.

[declassified]

are any of your audio clips 'sped up' at all? played at a higher speed than normal?

tracktion has problems rendering audio clips that have been set to play back at increased speeds.

That's it! As I already mentioned, two of the three orchestra tracks are pitched up extremely (one and two octave).
Is it possible to find a solution for this? Apart from waiting for T2, i mean...

[cbit]

jules already knows about it.. apart from re-recording in realtime, theres no way around it