I'd like to thank Steve Ringberg for his very knowledgeable and speedy help
in analyzing some files that I have been looking at.
Over the weekend I have worked on the issue of embedded sound files [in
..PPS] w/ Steve and Steve has determined (!) that the PPS files containing
'small' sound files (which made me suspect that they were NOT .WAV files)
indeed DO contain embedded .WAV files that have been 'shrunk' to a much
smaller size than the full blown .WAV file by simply encoding these at the
lowest 'resolution' possible. Typically, it would be 8 bits sampling, mono
track. In a test that I have done, a 16MBytes .WAV file has been 'shrunk' to
be under 1MByte by down sampling. The sound qaulity is degraded, but if the
intent is simply to add 'color' to the presentation, this may be good enough.
A way to do the conversion is to use the MS Sound recorder:
1. Open Sound recorder (SNDREC32.exe; find it in your system by search if do
not know where it is...).
2. Open a .WAV file of interest. Play it for a second to ensure that you've
loaded it...
3. Save AS this file; make sure that you look at the "Change" radio button
in the Save AS window and select the sampling resolution of interest (the
lowest is PCM, 8 Khz, 8 Bits, Mono. In another test that I've run I have
converted a (beautiful) Bach concerto from a 60.5 Mbytes to a 2.7 Mbytes file
that is still 'decent' in quality...
I'm still buffled by the inability to embed a .MID file as an OBJECT. Anyone
who knows how to resolve it, please advise!!!
The example above (the Bach concerto) is a 45Kbytes file in .MID (compared
to the 60.5MBytes in .WAV...).
Looking for advice on the .MID embedding as an OBJECT...
Sam
Steve Rindsberg said:
I'd be *very* interested in looking at one of these in the 500k to 1mb range if
you can email me a copy at steve atsign pptools dot com
It seems that there is an incomplete info that is 'floating' around on this
subject:
I receive (almost daily) .PPS files that are anywhere from 500KB to 2 or 3
MB in size. these self starting presentations typically contain images
(pictures) and background music that plays trhoughout the presentation. The
music is alway 'complex' sound (such as instruments and or vocals) and the
length of the music is several minutes, without repeatition. A typical .WAV
sound file that runs for 60 seconds will be from 1.5MB or larger. Actually,
I have tested the conversion of a 1 minute .MID classical music piece (about
10KB [!!!] and it converted to over 10MB of .WAV file (a bit smaller for an
..MP3 file...).
There IS something out there that allows music file that is not too large in
file size to be embedded... I wish I find it!!!
As an aside: I have tried to embed .MID file (as an OBJECT) in a slide. it
plays OK on the originating PC, but not once send out as a .PPS. Any ideas
why?
Thanks,
Sam
Geetesh Bajaj said:
It does - in fact I used ZipGenius for the ZIP EXE tutorial.
--
Geetesh Bajaj, Microsoft PowerPoint MVP
PowerPoint Notes:
http://www.indezine.com/notes
Free Templates:
http://www.indezine.com/powerpoint/templates/freetemplates.html
Technical Specialist, PowerPoint Live
http://www.powerpointlive.com
Thanks for the ZipGenius tip. Looks like it's got a whole raft of
interesting
features.
--
Steve Rindsberg, PPT MVP
PPT FAQ:
www.pptfaq.com
PPTools:
www.pptools.com
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Steve Rindsberg, PPT MVP
PPT FAQ:
www.pptfaq.com
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