Apple Logic Pro /LogicExpress Discussion

I'm having  a devil of a time editing out unwanted silence at the end of mp3 tracks 
bounced from a Logic sequence.  I find that if the end point of the bounce is too close to 
the end of the audio, there occurs an echo/spike  that ruins the silence at the end of the 
track.  This happens even if the audio has reached a silent state.  it all depends on how 
much time is allowed between the end of sound and the bounce end point.  

I work in the theater where it is necessary, for theatrical audio cues to not have extended 
track time at the end of each track.  Yet adding silent time to the bounce seems to be the 
only way to avoid the 'spike'.  Funny, the spike is not heard when Logic plays the track if 
it's imported back into the program (and indeed, the 'echo' is not even visible in the audio 
track editor), yet, when it is played externally as a bounced .mp3 by software such as 
Quicktime or iTunes, the unwanted echo almost always happens if the cut-off comes too 
quickly. Does anyone know of this problem and are there any solutions available?

Btw, this is occurring in offline bouncing.  Haven't tried it in real time yet - that just may 
be the work-around, but I do prefer the offline method.

Much obliged,

Michael S.

Thanks GA.  I think the next step for me would be to try a realtime bounce.  Hers's why 
some of your suggestions won't work for me.  Please comment further if I am missing any 
angles:

1) [Adjust start or end times in iTunes]:  Not enough time to do this one-by-one in a 
theatrical performance situation where cues need to be at one's fingertips (unless I'm 
unaware of  the ability for iTunes to save start & end times with each track of a playlist)

2) [Bounce to AIFF's]  Well, bye-bye HD space.  I know, I can convert the AIFF's to mp3's in 
iTunes, but wasn't Logic supposed to be the "all-audio-needs-addressed-within-a-single 
app-solution  (I don't understand why there isn't simple AIFF to mp3 conversion in Logic 
beyond bouncing (or is there))?

3) Re: the nature of the echo:  The echo does not seem to match the opening of the track, 
but rather has characteristics of the audio last heard (end of track) - like a 'hiccup' of the 
songs end (or maybe a 'burp')  Perhaps it's still some sort of buffer problem, but not 
related to cycling back to m 1.

It's comforting to hear that offline bouncing has recognized problems.  I'll just try the 
realtime approach on my next arrangement.

Thanks again,

MS


--- In Logic_Cafe@yahoogroups.com, GAmoore@a... wrote:

> > I'm having  a devil of a time editing out unwanted silence at the end of 
> > mp3 tracks
> > bounced from a Logic sequence.  I find that if the end point of the bounce 
> > is too close to
> > the end of the audio, there occurs an echo/spike  that ruins the silence at 
> > the end of the
> > track.  This happens even if the audio has reached a silent state.  it all 
> > depends on how
> > much time is allowed between the end of sound and the bounce end point. 
> > 
> 
> If you are importing the MP3s into Itunes, you can adjust the start and end 
> there (for example, I might cut of a few seconds of intro by starting at 0:06 
> (6 seconds in)).
> 
> You might also try bouncing to AIFF and see if you get the same echo, and try 
> to bouncing real time ... there have been reports of problems with offline 
> bouncing.
> 
> What might be happening is that Logic loops around, so when you get to the 
> end of the loop for the bounce is might load the buffer with the start of 
> measure 1. I have had the experience of hitting PLAY and hearing a click or glitch 
> in the beginning (where there should be silence) because logic is holding over 
> something in a buffer from the last play.