26

Re: Release medium specifics

Lixobix wrote:
ym wrote:
Lixobix wrote:

For the sake of argument, suppose the above release was available at amazon. You could add the release to MB and it would be exactly the same as the MP3 release, except it would have a different ASIN. Problem is that someone editing would see the two releases and think they are dupes, and they would be right under current schema. But in reality they are two distinct release with different prices. The fact that the price is different MUST mean the things are different. The seller knows that, the buyer knows that, so why does MB not know that?

Actually MB does this seperation by the Barcodes. Each of those sold items should have different barcodes which will result in different releases in MB. The only problem is that you cannot tell the technical difference unless adding it to annotation.

...no, because a digital release doesn't have a barcode, so how do you distinguish?

You can add "can be purchased at" relationship, but sometimes you might need a different release too.

Lixobix wrote:
ym wrote:
Lixobix wrote:

Digital files are not a mode of transportation, they ARE the music. CDs are a mode of transporting digital files. The end result, when you put the CD into your computer or CD player (which is a form of computer) is that you have those digital files.

Supposing you downloaded 44.1khz lossless files and bought the CD, you would have the same digital files in the end. On the other had, if you buy the CD and 96khz lossless you end up with two different sets of files.

When talking about the actual music you hear, in the first example the end result both ways is exactly the same. But MB distinguishes between the two releases. In the second example, the music you hear from the 96khz download is different to the CD and the 44.1khz download, but MB won't recognise it as unique from the 44.1khz download, even though it says the CD and the 44.1khz download, which sound exactly the same, are both unique things.

That's not true, Digital File is still your medium, but the codec inside it is your music.

ALL digital music, whether on CD or in files, is encoded with a codec. I think it's WAV for CDs. The CD was just a convenient way of getting those files to you, ordered and ready to play. It is a container for the files. A container you don't need if you just download the files.

My point is you can download 44.1k WAV files directly or you can copy them to your computer/CD player from a CD and you will still end up with a bunch of 44.1k WAV files. But if you download 96k files you have something different.

different to whom? I don't see or hear any difference... I'm sure lots of people don't too, but I understand some can hear difference, I just don't understand why do you need a different release for that?

Lixobix wrote:
ym wrote:

Same logic applies to vinyls too, ie; every vinyl can be made of different chemical substance, still it's the same release, the audio material inside it is not changed, tho having such an info in annotation is nice.

The weight of vinyl affects the sound. So the material is different.

do you see anyone adding a new release because of that? As I said before that is a cool annotation info, but not a good reason to enter a new release.

Lixobix wrote:
ym wrote:
Lixobix wrote:

That's the crux of the problem. Is makes no sense to say that two things that sound exactly the same are different but two things that sound different are exactly the same.

"sound different" is a really relative term.

This is not a matter of subjective perceptions, a 96k file contains more audio information than a 44.1k file.

I know they do, and probably sound better, but we do not enter a new release because they sound better!

Lixobix wrote:
ym wrote:
Lixobix wrote:

This is not the same at all. MB would accept a new release whenever the SPARS code is different because, presumably, each new SPARS code would mean a new release, whether with a different catalog, barcode or just date.

As I said above you will end up with different releases, but still you can't enter SPARSS code anywhere other than annotation.

Possibly another improvement that could be made. But SPARSS codes aren't around anymore, to my knowledge, whilst his-res releases are current and growing in popularity.

Musicbrainz already have support for both of them, you just want to enter a different release for each of them!

Lixobix wrote:
ym wrote:
Lixobix wrote:

I think pabouk is saying there is not a consistent rule as to how thing are written in the annotation field, making searches inaccurate. For example, some releases will say 24/96, others 24bit 96khz, others 24 bit audio etc. So if somebody has phrased the information in a different way it won't show up in the search. And there are no guidelines saying how it should be written

You can have a style for this purpose and let everyone follow it. Besides, same problem will arise even if you had a text field. The only solution is to let people select from a combo-box like structure, but when I think about that combo-box I can see how pain it would be.

Where would you put the guidelines explaining how to add the correct annotation in relation to hi-res releases? I think style guidlines for annotations would be very difficult to enforce. I don't see how a selecting box could be complicated. Even if there were 20 or so options, it's not hard to select the appropriate one.

I don't know if there is any such proposal before, but I remember before NGS we were entering catalog numbers and such (yea there were no support for those too :)) info to annotation just like:

Catalog No: xxx
SPARS Code: AAD
Release Date: xxx
Labels: x, y, z
...

Something like this doesn't even need any guideline IMO...

Re: Release medium specifics

ym wrote:

You can add "can be purchased at" relationship, but sometimes you might need a different release too.

You could distinguish that way, but I think you should be able to distinguish in the RG view, rather than having to open both releases and check annotation and relationships. You can do that easily with similar CD or vinyl releases (generally) because they have different catalogs and barcodes, which you can see in the RG.

ym wrote:
Lixobix wrote:

My point is you can download 44.1k WAV files directly or you can copy them to your computer/CD player from a CD and you will still end up with a bunch of 44.1k WAV files. But if you download 96k files you have something different.

different to whom? I don't see or hear any difference... I'm sure lots of people don't too, but I understand some can hear difference, I just don't understand why do you need a different release for that?

We add a CD release because it has a different barcode, even though the material on the disc is identical to that on another CD release. Yet a release that contains different material (higher resolution) is not added. It makes no sense to me to document distinctions between near identical releases of the the same thing (same audio files on the CDs, perhaps different catalog or barcode) but not to distinguish between releases that contain different files.

The debate as to whether his-res sounds different is irrelevant in my opinion. There are clearly people who do hear a difference (or think they do), else there wouldn't be a market for it.

Accepting that, for the sake of argument, you are saying that we care about release dates and catalog nos but we don't care about the sound of a release being different! Surely this is important in a music database!

ym wrote:
Lixobix wrote:
ym wrote:

Same logic applies to vinyls too, ie; every vinyl can be made of different chemical substance, still it's the same release, the audio material inside it is not changed, tho having such an info in annotation is nice.

The weight of vinyl affects the sound. So the material is different.

do you see anyone adding a new release because of that? As I said before that is a cool annotation info, but not a good reason to enter a new release.

People DO enter new releases for different vinyl weights. It's just that generally they are released with a new catalog, barcode, label or (at least) date. Most new releases are of a decent weight, but older releases, that have previously only been available on thin vinyl, are reissued on heavy vinyl. However, I can't think of any example where two vinyls differing only in weight have been released on the same date, nor can I think of any reason why a label would do so.

ym wrote:
Lixobix wrote:

This is not a matter of subjective perceptions, a 96k file contains more audio information than a 44.1k file.

I know they do, and probably sound better, but we do not enter a new release because they sound better!

This I completely disagree with. If something sounds better there is something different about it and it is therefore a different release.

ym wrote:
Lixobix wrote:
ym wrote:

As I said above you will end up with different releases, but still you can't enter SPARSS code anywhere other than annotation.

Possibly another improvement that could be made. But SPARSS codes aren't around anymore, to my knowledge, whilst his-res releases are current and growing in popularity.

Musicbrainz already have support for both of them, you just want to enter a different release for each of them!

If by this you mean annotation, then yes. However, the quality of this support could be improved.

ym wrote:

I don't know if there is any such proposal before, but I remember before NGS we were entering catalog numbers and such (yea there were no support for those too :)) info to annotation just like:

Catalog No: xxx
SPARS Code: AAD
Release Date: xxx
Labels: x, y, z
...

Something like this doesn't even need any guideline IMO...

...but it was agreed that these things should have their own field! Progress! I'm trying to affect a similar change.

Guidelines would be required at least to specify whether you put 24/96 or 24bit, 96khz etc.

Re: Release medium specifics

ym wrote:
Lixobix wrote:
pabouk wrote:

Annotation field is not structured and it does not enforce unified format of contained information thus it is not suitable for reliable search.

I think pabouk is saying there is not a consistent rule as to how thing are written in the annotation field, making searches inaccurate. For example, some releases will say 24/96, others 24bit 96khz, others 24 bit audio etc. So if somebody has phrased the information in a different way it won't show up in the search. And there are no guidelines saying how it should be written

You can have a style for this purpose and let everyone follow it. Besides, same problem will arise even if you had a text field. The only solution is to let people select from a combo-box like structure, but when I think about that combo-box I can see how pain it would be.

Now what is better?
a) to have a style which is for most editors buried somewhere in the Style Guide and difficult to remember when found by chance
b) to have an assisting GUI (hidden by default as artist credits) which could show everyone what to enter and how
IMHO the main disadvantages of b) is more demands on the work of software and database developers and maintainers.
The unstructured (or loosely structured) text information also makes other operations than searching difficult. For example if you would like to sort a list of releases by codec/bitrate/samplerate ...

Lixobix wrote:
pabouk wrote:

I noticed that the number of channels was not discussed here. Of course music with more than two channels (stereo) is rare but it could be so different that I think that this information should be recorded in MB.

With physical releases, they are at least given distinct releases, but searchability would be nice. Are there any multi-channel dm releases? Because these would currently be undistinguishable from stereo DM.

I suppose one fix to the above problems is to use the disambiguation field for the release, but this seems to be stretching it's intended use.

Certainly there are multi-channel download releases often marked as "surround":
http://www.gimell.com/catalogue.aspx?fi … er+Pro+5.1
http://www.itrax.com/Pages/AlbumDetails … 1e871d6ccb - this shop does not seem to be able to filter the "surround" releases but there are many of them
If the popularity of the multi-channel music will not considerably decrease I think that the number of the multi-channel download releases would only grow.

Lixobix wrote:
ym wrote:

... Digital File is still your medium, but the codec inside it is your music.

ALL digital music, whether on CD or in files, is encoded with a codec. I think it's WAV for CDs. The CD was just a convenient way of getting those files to you, ordered and ready to play. It is a container for the files. A container you don't need if you just download the files.

My point is you can download 44.1k WAV files directly or you can copy them to your computer/CD player from a CD and you will still end up with a bunch of 44.1k WAV files. But if you download 96k files you have something different.

Lixobix, you are right. Just to make it technically correct:
* The codec used on Audio CDs is called PCM - http://en.wikipedia.org/wiki/Pulse-code_modulation
It is one of the very basic ways how to store analogue signal digitally. Practically all the currently used codecs (which we use mainly because of compression of the size of resulting data - MP3, FLAC etc.) take as input and output PCM data. WAV is not a codec it is a container which could carry data encoded by various codecs inside - most often it is PCM - uncompressed WAV.
* Audio CD is not a container for files.
Audio CD contains a (single) stream of PCM data and individual tracks are in fact indexes pointing to certain points in the stream. BTW this is one of the reasons why grabbing an Audio CD is not a trivial task.

So if we forget about lossy compression and take into account only 44.1 kHz / 2x 16 bits for now. You will get exactly the same PCM data regardless their source (Audio CD, WAV or FLAC) and if you play them on the same audio equipment you get exactly the same sound.

If you use a different sampling frequency or bit depth (i.e. 192 kHz / 2x 24 bits) for recording and playback you get a different sound when measured objectively. I believe that there are people which hear the difference.

If you use a lossy codec then there is of course a difference too. I certainly hear a difference between uncompressed PCM 44.1 kHz / 2x 16 bit and the same PCM compressed into MP3 128 kbps. If there are download releases available only as MP3 128 kbps I think we should enter this information into MB.

--- Regarding media and transport of audio information:
For correct speaking we should distinguish between the audio information and the means of representing and transporting it.

The path of the audio information representation could be simplified as:
sound ---MIC---> electric signal ---ADconverter---> PCM stream ---MP3enc---> MP3 stream

The information storage of the MP3 data stream could be for example MP3 file, OGG file, WAV file (the last two are not very common).

For transport of the digital audio data we could use:
- digital networks - digital download music, digital radio, streaming over Internet etc.
- physical media - Audio CDs, SACDs, Audio DVDs, CDROMs with MP3s, DVDs with MP3s, SlotAudio (microSD with MP3s), USB flash drive with MP3s etc.

Lixobix wrote:

People DO enter new releases for different vinyl weights. It's just that generally they are released with a new catalog, barcode, label or (at least) date. Most new releases are of a decent weight, but older releases, that have previously only been available on thin vinyl, are reissued on heavy vinyl. However, I can't think of any example where two vinyls differing only in weight have been released on the same date, nor can I think of any reason why a label would do so.

Discogs even records vinyls released in different colours. See http://www.discogs.com/master/382846
Audiophiles also take into account matrix numbers of CD an vinyl pressings (numbers on the inner circle of the medium). You can find them on Discogs too.

Re: Release medium specifics

Thanks pabouk, you've clarified a lot of points I was making.

An assisting GUI would definitely be better, but yes, more work.

The examples you gave of hi-res surround DM releases show that there is a lot of information which ought to be better integrated in MB. Also, since some releases show bit rates such as 48, 88 and 176, simply putting the info in the annotations box means you might have to search every possible hi-res bit rate to find what you're looking for. On the other hand, if this information was integrated so you could search for 'hi-res' (above 16/44) it would be much easier.

Yes, PCM is correct, and it's a constant stream, but I think you understand the point I was making. You have the same digital information in the end. CD, WAV, FLAC, ALAC and AIFF all contain uncompressed (lossless) PCM.

pabouk wrote:

--- Regarding media and transport of audio information:
For correct speaking we should distinguish between the audio information and the means of representing and transporting it.

The path of the audio information representation could be simplified as:
sound ---MIC---> electric signal ---ADconverter---> PCM stream ---MP3enc---> MP3 stream

The information storage of the MP3 data stream could be for example MP3 file, OGG file, WAV file (the last two are not very common).

For transport of the digital audio data we could use:
- digital networks - digital download music, digital radio, streaming over Internet etc.
- physical media - Audio CDs, SACDs, Audio DVDs, CDROMs with MP3s, DVDs with MP3s, SlotAudio (microSD with MP3s), USB flash drive with MP3s etc.

Interesting. So perhaps put all digital media, inc. CDs, DVD's etc, into the same category then categorising by the level of audio information (lossy, standard, hi-res), then by the distribution medium (CD, FLAC, WAV, stream).

I discussed coloured vinyl earlier :)

30 (edited by pabouk 2012-05-04 15:10:42)

Re: Release medium specifics

Lixobix wrote:

Interesting. So perhaps put all digital media, inc. CDs, DVD's etc, into the same category then categorising by the level of audio information (lossy, standard, hi-res), then by the distribution medium (CD, FLAC, WAV, stream).

Such access would be probably overly technical and too prohibitive for non-technically oriented people and also impractical.
I think the most accessible way is to show physical media at the first level and group them by analogue / digital. Digital downloads would be another group as they do not have any permanent physical media sold by the distributor.

* analogue
    * vinyl
    * audio cassete
    * wax cylinder
    etc.
* digital (on physical media)
    * Audio CD
    * Audio DVD
    * SACD
    * MiniDisc
    * Digital Audio Tape
    * SlotMusic
    * USB flash drive
    * CDROM
    etc.
    * Other (many physical media are rare or will emerge in the near future)
* digital download
    ? not sure if further classification is required - regarding the means of download - possibly:
    * web download (internet download not requiring any proprietary application or device)
    * iTunes
    etc.
    * Other

Other details could be on the next level optional and hidden by default.
Physical media which have the form of the content strictly defined would not probably need further details (probably Digital Audio Tape).
Also there are media where the original simple standard was "raped" in later time (Audio CD: HDCD and various anti-copy protections).

IMHO in the future there would be less and less physical media being sold.

I hope there are no media which were used both for digital and analogue distribution of music.

31 (edited by ym 2012-05-04 15:21:09)

Re: Release medium specifics

this clarification of analog or digital is a good idea, but I don't understand how it will solve your problem.
you will still end up with "digital download" releases telling nothing about bitrates.

BTW, I don't think sub-categorizing your "digital download" category with stores (like iTunes) is a good idea. IMO, if there will be a sub cutegory there that should be lossless and lossy, and yet I still don't want to see different releases of bitrates sorry.

32

Re: Release medium specifics

pabouk wrote:

I hope there are no media which were used both for digital and analogue distribution of music.

unfortunately there are, see http://en.wikipedia.org/wiki/VinylDisc
Also, you might want to check http://wiki.musicbrainz.org/Release/Format .

Re: Release medium specifics

iTunes are just an idea because you cannot simply buy music on iTunes and download it. You have to install their proprietary application to be able to do this.

The codecs, bitrates etc. would be an optional setting on the next (hidden by default) level.

Re: Release medium specifics

pabouk wrote:
Lixobix wrote:

Interesting. So perhaps put all digital media, inc. CDs, DVD's etc, into the same category then categorising by the level of audio information (lossy, standard, hi-res), then by the distribution medium (CD, FLAC, WAV, stream).

Such access would be probably overly technical and too prohibitive for non-technically oriented people and also impractical.
I think the most accessible way is to show physical media at the first level and group them by analogue / digital. Digital downloads would be another group as they do not have any permanent physical media sold by the distributor.

* analogue
    * vinyl
    * audio cassete
    * wax cylinder
    etc.
* digital (on physical media)
    * Audio CD
    * Audio DVD
    * SACD
    * MiniDisc
    * Digital Audio Tape
    * SlotMusic
    * USB flash drive
    * CDROM
    etc.
    * Other (many physical media are rare or will emerge in the near future)
* digital download
    ? not sure if further classification is required - regarding the means of download - possibly:
    * web download (internet download not requiring any proprietary application or device)
    * iTunes
    etc.
    * Other

Other details could be on the next level optional and hidden by default.
Physical media which have the form of the content strictly defined would not probably need further details (probably Digital Audio Tape).
Also there are media where the original simple standard was "raped" in later time (Audio CD: HDCD and various anti-copy protections).

IMHO in the future there would be less and less physical media being sold.

I hope there are no media which were used both for digital and analogue distribution of music.

This is an interesting idea, but perhaps that amount of restructuring is not required for what I'm trying to achieve. Simply having a searchable, GUI bit rate/format field within each DM release would be fine.

It's a good point that DM is becoming more prevalent and should be given greater status.