Exported song play slower tempo than original??

[Re8et]

I never experienced this, but the output rendered song is
actually playing back at a slower tempo than the original Reason file... what could it be>???


I have to speed up the song playback in Audacity by 1.11X to get the original speed back..???

[boingy]

That makes absolutely no sense at all!

Have you tried playing it in something other than Audacity?
Have you tried pulling the rendered file back into the Reason project that created it to compare?

[guitfnky]

I had some weird issues with playback speed on an exported file last week...

exported 44.1k 16 bit, with no dithering, and it played fine in the PC player, but when I uploaded it to any of the AI mastering sites so I could get a quick idea what it might sound like, it played back slowly. when I went back to the export file, it too was playing back more slowly.

I tried re-exporting, but turned either on, and same thing, except now the export file still plays back correctly on my PC.

the odd thing is, when I look at the file properties, I think it said the sampling rate was something like 14.1k or something—it was totally off, but it was that way on both exported files (the one that started playing slower on my PC, and also the one that didn’t).

I kind of gave up on using those sites to test a quick master, but not sure what’s going on there, since I don’t think it’s on their end. not sure if it’s something specifically with Reason or something else.

does anyone know whether the audio interface is being used at all to render exported audio? I’d assume that was all done by Reason, which would at least mean it’s not some sort of hardware issue.

[Aquila]

Now by slow do you mean pitched down like a tape? Seems off but perhaps it's somehow attempting to render at 48khz but ending up being interpreted as 44.1 either through a bug with Reason or an audio driver?

[Re8et]

NO idea.
I try to answer some qst.

I tried VLC but I do not trust it more than Audacity, either way the speed was way off on VLC also.

I don't think the audio interface comes into play when rendering.

Windows does not like 44.1 Khz, I set it, and he reverts it back to 48... In Reason I use 44.1....
Audacity did show the last song as 44.1

Speed, slower speed, speeding up by 1.11X in Audacity got the file back to original intended speed.


I made a new remix or project in the meanwhile and now the tempo is back to normal...
I only closed other windows, and a couple background music players...

Audacity apparently is working fine.

[Karim]

No fucking sense at all unless it is an export other than the canonical 44.100 hz so the play goes like this.

have you tried different sound cards / settings / players?
Mac or PC?

[boingy]

The 1.11x is interesting. It's not far off the ratio of 48 to 44.1.

[guitfnky]

Now by slow do you mean pitched down like a tape? Seems off but perhaps it's somehow attempting to render at 48khz but ending up being interpreted as 44.1 either through a bug with Reason or an audio driver?

yeah, should’ve mentioned that...mine was definitely pitched down and slower. that was my first thought—that it might have something to do with the sample rate, but I checked my interface, which was/is set at 44.1 for everything—recorded at that rate, exported at that rate, and I’d expect it to be played back at that rate. super weird.

[WillyOD]

I'm thinking your audio driver just bugged out on the fly and got confused with the playback sample rate. I'm having this exact problem with Balance, the audio just drops out (maybe once in a day or two) and I have to restart the software using the audio driver.

[Creativemind]

Could be your audio drivers for your computer perhaps? if you're using a different soundcard than what you use in Reason. In Reason I use my Behringer drivers for my audio interface but not on my comp outside Reason and lately (not this) but been having issues with playback on my comp soundcard lately. Crackling & stuttering and at times a dalek type ring mod effect but my comp has seen it's day if I'm honest. 12yrs old.

Have you played the render in the browser in Reason?

[guitfnky]

for me, it’s the same driver inside Reason, and out. I haven’t yet tried playing back the rendered file in Reason—that’s a good idea...

[Re8et]

I think I found the case
Closing Reason and playing the song with Reason closed the song plays back normally in both VLC and Audacity


I'm on win 10 pc
Audio soundcard is set at 44.1, exported at 44.1 16 bit dither off
Original song lenght is 3.15
Re-importing it to a new session with same playback tempo of 123 bpm it stays at 3.15

So it could be a windows driver sharing problem , or Reason (Multithread enabled), or VLC.
Still it's just speculation and have not experienced this before, nor do I know a solution to this.

Also, speeding up by 1.11 altered the original lenght to 2.55, it felt like it was normal two days back, but
not today.