Hi Vicky,
Soundcloud plays in MP3 128 kbps, and the frequency cutoff is around 16kHz.=
I find that a low pass eq, before MP3 compression, greatly attenuating an=
y business (or in your case, buzziness) at 16k and beyond, reduces the chan=
ces of nasty artifacts.
John Hartog
rockscallop.org
--- In vickipowys <> wrote:
>
> John,
>
> That is excellent information, thank you so much.
>
> The grasshopper (Froggatt's Buzzer) recorded at 44.1 k did register
> right up to 22 kHz, and loud, so that may have caused the encoding
> distortion in Soundcloud.
>
> I was interested to know just how high in frequency the Froggatt's
> Buzzers could go, so I've just tried recording them at 192k (highest
> sample rate on the Sound Devices recorder) and their buzzing goes up
> to 60 kHz !!! I never knew they were in the ultrasonic league!
>
> thanks again,
>
> Vicki
>
>
> On 20/03/2012, at 4:39 PM, jtudor2005 wrote:
>
> > Vicki
> >
> > From the SoundCloud 'Help' section about encoding and why peoples
> > songs sound like crap. (My words)
> >
> > ******************
> > Sometimes our transcoding system can create audio artifacts, as we
> > transcode all tracks to 128 kbps mp3 for streaming playback.
> > Uploading a lossless or high-quality lossy file will usually reduce =
> > these to a minimum, but unfortunately there's not much we can do
> > for the handful of individual tracks that are still affected.
> >
> > If you choose to make your track downloadable though, the version
> > users can download will be an exact copy of the version you
> > uploaded, without any transcoding.
> > ******************
> >
> > Me again. So it may be better uploading from a Wav file as your MP3 =
> > encoded file will get re-encoded by soundcloud.
> >
> > I remember trying to upload an MP3 file to this group a long time
> > ago to ID a bat call. UNless it was at a very high sample rate, the =
> > high pitched bat calls were not included. So SoundClouds 128 kbps
> > transcoding may also be loosing the Grasshoppers too.
> >
> > Regards
> > John
> >
>
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