naturerecordists
[Top] [All Lists]

6. Re: artifact in spectrogram created using Raven

Subject: 6. Re: artifact in spectrogram created using Raven
From: "mipartitus" mipartitus
Date: Wed Jul 18, 2012 9:11 am ((PDT))
--- In  Klas Strandberg <> wrot=
e:
>
> Sorry, but I have to straighten this thread out for myself:
>
> Gabriel says: Even though people have said these are bad recordings,
> and I said you will run into trouble in peer review later for using MP3..=
.....
>
> Are you saying that Lauras files sound the way they do because it's MP3??

Well, I guess at least three issues emerged in the same thread.

1) What is the cause of the artifacts in Laura's recording? My impression w=
as that some knowledgeable people thought it could be low bit rate MP3 alon=
e. Others have put forward different explanations. Of course it will be imp=
ossible to say for sure on the basis of the sound file alone. This requires=
 testing the equipment with different settings, and comparing it to referen=
ce equipment.

2) I said, perhaps a bit harshly, that MP3 should not be used for scientifi=
c recordings (also not if it is not the cause of Laura's problem). This was=
 perhaps too strict, as Dan correctly pointed out, but in general MP3 is a =
bad choice. Science is expensive in terms of money and time. People will be=
 grateful later if you spend a bit of money on an extra memory card, and us=
ed PCM/flac for recording.

3) For nonscientific purposes, what bit rates are acceptable for good quali=
ty? It is not surprising that the opinions on this vary :-)

Best, Gabriel








<Prev in Thread] Current Thread [Next in Thread>
Admin

The University of NSW School of Computer and Engineering takes no responsibility for the contents of this archive. It is purely a compilation of material sent by many people to the naturerecordists mailing list. It has not been checked for accuracy nor its content verified in any way. If you wish to get material removed from the archive or have other queries about the archive e-mail Andrew Taylor at this address: andrewt@cse.unsw.EDU.AU