wwp@yahoogroups.com:
Re: Audio file restrictions
Mickael Therer 2005-Mar-20 22:49:00
right so, I wasn't clear on that post those are usually
my minimum starters for all samples :
96kbits stereo (48 for mono)
22kHz (11kHz sample for voice range or similar samples
down to 24kbits)
and VBR does help from what i've tested.
but it all boils down to hearing really:
one 11 kHz stereo 96 kbps on the street will sound good
while the same by the seaside will need much higher
quality to deliver ambient, at least from my samples,
it does also add up considerably to processing vr if you
want it to sound best without killing bandwidth.
-m
--- In #removed#, Bernhard Vogl <#removed#> wrote:
> Hello Mickael
>
> In my understanding, a mono recording with a bitrate of 96kbps and a
> sample rate of 11kHz sounds like a little overkill to me. 96kbps will
> allow "CD"-quality (44100) for mono recordings. E.g. for
downsampling to
> 22050Hz, a bitrate of 64kbps would be sufficient. Maybe you mean 11025
> "maximum bandwidth"?
> A quick search on the net showed up this link:
> http://www.nuntius.com/solutions31.html
> (pls. scroll down to MP3 for a table bitrate vs. bandwith)
>
> Also it could be interesting to use VBR coding, if the audio track has
> some quiet/silent moments...
>
> Best regards
> Bernhard
>
> Mickael Therer wrote:
>
> >--- In #removed#, Bernhard Vogl <#removed#> wrote:
> >
> >
> >>My heart always bleeds if have to downgrade image/audio quality to
fit
> >>for web needs ;-)
> >>
> >>I have downgraded to 22050 56kbit/s with a file size of 286kb (QT pro
> >>has blown it up to 530kb) and uploaded the 2 versions. Both panoramas
> >>are less than 3MB.
> >>
> >>
> >
> >Bernie,
> >
> >you can sample as low as 11kHz on some occasions without
> >loss if you're in the voice range, and from reading and
> >listening to your samples and to build on what Brook
> >said you can half the size literally by just turning
> >mono, the user won't notice the difference unless
> >on headphones.
> >
> >My heart bleeds too but i've set it to accept 11kHz/96kbps
> >mono for most of my samples as anything lower than 96
> >sounds like a phone call.
> >Also Mp3><AAC (itunes) is still being explored on my side
> >as the later gives (great) results but excludes QT5 users
> >and there are many around
> >
> >-m
> >
> >
> >
> >
> >
> >------
> >The World-Wide Panorama
> >
> >For more information:
> >-Visit the web site at http://GeoImages.Berkeley.edu/wwp.html
> >Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
> >
> >