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Re: [MMSEM] Music Use Case & FOAF

From: Oscar Celma <ocelma@iua.upf.edu>
Date: Wed, 28 Mar 2007 14:22:32 +0200
Message-ID: <460A5E08.8010109@iua.upf.edu>
To: RaphaŽl Troncy <Raphael.Troncy@cwi.nl>
CC: public-xg-mmsem@w3.org


RaphaŽl Troncy wrote:
> Hi Oscar,
> Thanks for the detailed answers!
>> Right now only title and artist. For the moment, I think it's enough.
>> More options could be the Musicbrainz/MusicDNS PUID [1].
> Yes, I think it would also be great.
> But who can generate the PUID ? Only the secret algorithm of MusicBrainz ?
Nope! the secret algorithm comes from the clever MusicIP company [1]. 
They provide the MusicDNS service [2][3], that is "linked" with the 
MusicBrainz metadata repository. So, you can generate a PUID with the 
client (open source), and then send it to their servers, but the server 
side code (music similarity, and identification) is completely closed.
>> I meant "possible", in the sense that more metadata could be filled in
>> (see MO examples at [2], specially level 3).
>> BTW, I think the conversion is quite straightforward and simple.
> OK, I see. But you cannot get these additional metadata (that MO allows in the level 3) only
> from the common ID3 tags ...
No, we can't. We will need to apply some low-mid-level descriptors from 
the audio. That's the use case shown in the /facet+music application 
(browsing via different facets of the music).
The problem is that computing this descriptors under demand (when the 
mp3 URL is sent) is time-consuming. So, we will probably have to stick 
with these editorial descriptors for the ID3 to MO showcase implementation.

> I think it would be great that in the use case you make a small table detailing what ID3 tags
> you convert and their equivalence in MO, but as you said, it is quite straightforward ...
Ok. I agree. I will do that, then.

All the best,

[1] http://mtg101.upf.es/podcast-urls.data
[2] http://www.musicip.com/dns/index.jsp
[3] http://en.wikipedia.org/wiki/MusicDNS
Received on Wednesday, 28 March 2007 11:22:05 UTC

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