Talk:Audio file format

message: There appears to be some confusion as to the content of this page, the opening sentence (correctly, imo) describes an audio file format as a container format for audio data while most of the article discusses audio formats, i.e. compressed vs uncompressed data which is not necessarily related to the audio file format. Any comments on this? --80.44.213.35 19:46, 28 April 2007 (UTC)
thread_title:  Content confusion 

message: I agree with the comment about the confusion between file formats and audio encodings.  Also, the article implies that Microsoft's WAV format always carries uncompressed PCM audio.  In fact it can carry many encoding types.  See for instance, http://msdn2.microsoft.com/en-us/library/ms713497.aspx and http://graphics.cs.uni-sb.de/NMM/dist-0.9.1/Docs/Doxygen/html/mmreg_8h.html
Gobbag 16:57, 22 May 2007 (UTC)
thread_title:  Content confusion comment 

message: Gee, the article is "(Redirected from ACT (audio format)) with of course no mention of that format. Jidanni (talk) 22:56, 9 February 2008 (UTC)
thread_title: ACT

message: I suggest the removal of two of the three existing external links: "libsndfile" and "[1]".  The former seems to be an advertisement and the latter is off-topic (contrary to the label).  Can anyone give me a good reason why either of these should stay?  Uriah923 19:33, 19 August 2005 (UTC)
thread_title:  External links 

message: The content added from the ON reference remains in this article, but the reference has been removed. This action is disputed and a conversation is ongoing here.  Uriah923 06:13, 2 September 2005 (UTC)
thread_title:  Value of ON content and quality of reference 

message: Just a note to the editors currently working on this article, it has been mentioned in an article from Wired News.  --Andylkl [ talk! | c ] 15:19, 10 December 2005 (UTC)
thread_title: Linked from Wired.com

message: These two formats should probably be included, yes? 
Markhurst 21:41, 10 October 2006 (UTC)
replies: text: And OGG? Oddity- 14:02, 12 January 2007 (UTC)
thread_title:  What about .m4a and .aac? 

message: I suggest dropping the reference in the intro to the "sampling of the votage corresponding to the speaker membrance position"
Where a speaker membrane is has nothing to do with sampling nor coding.
A file never has to even "see" a speker to be created.
The reference just serves to confuse.RSFRASER 18:52, 16 November 2006 (UTC)
replies: text:  Well, what the heck do the samples stand for then?  That question is exactly what brought me here, and I cannot find the answer.  Is the instantaneous sound-pressure-level emitted by a sound-reproduction system supposed to be proportional to the value of the sample?  If no, then what?  —Preceding unsigned comment added by 76.199.197.180 (talk) 09:49, 29 December 2010 (UTC)
thread_title:  No Speaker needed 

message: This article starts with the sentence, "The general approach towards storing digital audio formats is not to sample the audio..." The word "not" in here appears to be an error, but I will let someone more qualified make this decision.
Ed —The preceding unsigned comment was added by 130.126.24.175 (talk) 05:11, 17 March 2007 (UTC)
replies: text: The "not" was added by an anonymous user, and was incorrect.  I have undone that edit.  The Wilschon 00:33, 7 April 2007 (UTC)
thread_title:  Confusing negative 

message: How about some info on converting between formats  Hrolls (talk) 11:14, 14 February 2008 (UTC)
thread_title:  Conversion 

message: which format of audio file is better?for clear and dynamic sound  —Preceding unsigned comment added by 202.83.34.104 (talk) 19:25, 13 August 2008 (UTC)
thread_title:  which is better 

message: Since we talk about MIDI files, couldn't we talk about module files too ?
Spidermario (talk) 11:08, 10 August 2009 (UTC)
thread_title: MOD files

message: I came to this page hoping for info on the sample rates and bit depths supported by Apple Lossless format; this seems like info that would be relevant for all the formats being discussed here. BTW, I know Apple lossless supports 24-bit but I'm seeing much misinformation elsewhere that it's limited to 16-bit. Haven't found an official Apple spec sheet after a brief effort.
Would a chart of origin/common applications/specs be a good way to organize and meaningfully compare audio formats in this article? Beyond my newbie abilities, FWIW.
Re: the assertion above that DTS and Dolby Digital are the only 5.1 audio formats- here are some other examples, all of which might belong in this article--
DSD- native format of SACD audio, both stereo and surround, it's fundamentally different from PCM formats, using a single-bit super-high sample rate approach.
MLP- 'Meridian Lossless Packing', the compressed format used for DVD-audio hi-res stereo and surround, necessary to keep the data rate within DVD medium's capabilities.
Then there are the lossless Blue-Ray DVD audio formats that DTS and Dolby came up with. Some info on their specs and parameters would seem appropriate here, unless DVD-only audio formats are discussed elsewhere, in which case a link to that article belongs here. 
Warrenog (talk) 15:32, 22 April 2010 (UTC)
thread_title:  Some omissions and suggested inclusions 

message: CDA is only a "shortcut" to an audio track created by Windows. It doesn't contain any sound, has fixed size, so it cannot be an audio file format! Jancikotuc (talk) 11:02, 23 December 2010 (UTC)
thread_title:  CDA is not an audio file format 

message: Is was free AND open file format? Is there any source for that information. I could not find one. --Jakubt (talk) 18:56, 22 January 2011 (UTC)
thread_title:  wav free and open? 

message: Apple Lossless is missing from the lists at the end of the articles.  Should Apple Lossless be listed as free and open (like AIFF), open, proprietary?  There are no references given to support any of these distinctions and some appear dubious: e.g., although there was an unofficial "MPEG 2.5" that was proprietary, MP3 is an ISO standard and there is nothing proprietary about it.  AAC is also an ISO standard and is not proprietary. The wiki article on DCT says it is proprietary but it isn't listed as such.  This division into open and proprietary categories is a mess.
Ross Fraser (talk) 15:39, 10 March 2011 (UTC)
replies: text: I have WP:BOLDly combined all into one list. I've also added more prominent links to existing and better lists. Given the existence of those, I'm not convince we even need a list here. Feel free to add Apple lossless onto the list though. --Kvng (talk) 13:52, 12 March 2011 (UTC)

text: Thanks, I've alphabetized the resulting list.  I think it is still useful to draw a distinction between codecs and file formats so would suggest that the list is still useful.  I've added ALAC. 
Ross Fraser (talk) 01:25, 14 March 2011 (UTC)
thread_title:  Apple Lossless not in list 

message: I would like a section discussing the fundamental transform from analog to digital, or a link to the article which discusses that best. I will research elsewhere, but the article could use some brief fundamentals and such a link if it exists. The topic is more linkworthy here than in many other articles.
Mydogtrouble (talk) 20:43, 11 November 2012 (UTC)
replies: text: There's a link to digital audio in the lead. Another candidate is Sampling (signal processing). -—Kvng 14:09, 14 November 2012 (UTC)
thread_title:  Acoustic waves - Is "Lossless" a misnomer? 

message: see topic -- Cachsten (talk) 12:43, 14 September 2013 (UTC)
thread_title:  Sound Sample Formats are missing 

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thread_title:  External links modified 

message: I believe many who come to this page are looking to compile a list to feed to a program or filter of some sort. The aesthetics of dumping a plain text list into the article would be terrible, but it should be inserted somewhere or somehow since it will be useful to many who visit the page. I've compiled them below, if someone can figure out how to neatly insert it into the article
.3gp
.aa
.aac
.aax
.act
.aiff
.amr
.ape
.au
.awb
.dct
.dss
.dvf
.flac
.gsm
.iklax
.ivs
.m4a
.m4b
.m4p
.mmf
.mp3
.mpc
.msv
.ogg,
.opus
.ra,
.raw
.sln
.tta
.vox
.wav
.wma
.wv
.webm
.8svx
(maybe a citation type link where a text popup of the list appears? best i can think of which is why im posting it here so hopefully someone thinks of something better.)  — Preceding unsigned comment added by 96.239.79.39 (talk) 08:30, 27 April 2018 (UTC)
thread_title:  simple list of the extensions formatted as one per line for misc uses