Audio pops at cuts and transitions

This subject has come up several times on this NG. I was doing some
background reading on the DV format and came across the following paragraph:

Although the format supports high quality sound, DV's audio is unlocked.
This non-synchronous design means that a specific number of audio samples
are not rigidly synchronized to each video frame. If one frame is off a
couple samples, you must insert a short mute at any audio edit or risk
inducing an audible click.
(source: 213.84.219.66/Documentatie/dv_explained.pdf )

It made me wonder if the phenomenon is a result of the way audio is encoded
within the DV format, and the way MM2 handles it? I know that the MM2 edit
space is not the full 25fps (PAL), but something more like 12.5fps (or 15fps
NTSC), so I wondered if this could somehow lead to the audible pops that I
hear at cuts and transitions.

Any thoughts?

Jake

Michel
Wed Feb 11 10:18:17 CST 2004

By the way, was this bug also present in MM1?



"Jake" <jake@~nospam`.jake.org.uk> wrote in message
news:%23vVtBKL8DHA.2556@TK2MSFTNGP09.phx.gbl...
> This subject has come up several times on this NG. I was doing some
> background reading on the DV format and came across the following
paragraph:
>
> Although the format supports high quality sound, DV's audio is unlocked.
> This non-synchronous design means that a specific number of audio samples
> are not rigidly synchronized to each video frame. If one frame is off a
> couple samples, you must insert a short mute at any audio edit or risk
> inducing an audible click.
> (source: 213.84.219.66/Documentatie/dv_explained.pdf )
>
> It made me wonder if the phenomenon is a result of the way audio is
encoded
> within the DV format, and the way MM2 handles it? I know that the MM2
edit
> space is not the full 25fps (PAL), but something more like 12.5fps (or
15fps
> NTSC), so I wondered if this could somehow lead to the audible pops that I
> hear at cuts and transitions.
>
> Any thoughts?
>
> Jake
>
>