Difference between revisions of "MP3"
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The MP3 algorithm development started in 1987, with a joint cooperation of [http://www.iis.fraunhofer.de/ Fraunhofer IIS-A] and the University of Erlangen. It is standardized as ISO-MPEG Audio Layer-3 (IS 11172-3 and IS 13818-3). | The MP3 algorithm development started in 1987, with a joint cooperation of [http://www.iis.fraunhofer.de/ Fraunhofer IIS-A] and the University of Erlangen. It is standardized as ISO-MPEG Audio Layer-3 (IS 11172-3 and IS 13818-3). | ||
| − | It soon became the de facto standard for lossy audio encoding, due to the high | + | It soon became the de facto standard for lossy audio encoding, due to the high compression rates (1/11 of the original size, still retaining considerable quality), the high availability of decoders and the low CPU requirements for playback. (486 DX2-100 is enough for real-time decoding) |
| − | It supports | + | It supports multichannel files (Although there's no implementation yet), sampling rates from 16kHz to 24kHz (MPEG2 Layer 3) and 32kHz to 48kHz (MPEG1 Layer 3) |
Formal and informal listening tests have shown that MP3 at the 160-224 kbps range provide encoded results undistinguishable from the original materials in most of the cases. | Formal and informal listening tests have shown that MP3 at the 160-224 kbps range provide encoded results undistinguishable from the original materials in most of the cases. | ||
| + | =LAME= | ||
*[http://www.mp3dev.org/ LAME Homepage] | *[http://www.mp3dev.org/ LAME Homepage] | ||
| + | LAME (Lame Ain't an MP3 Encoder) is the recommended encoder. It has been developed by the open-source community since 1998, and has become the highest quality [[MP3]] encoder for most purposes. | ||
| − | * MP3 Creation With The LAME Encoder | + | Some benefits for using LAME: |
| + | * Highly optimised presets | ||
| + | * Fast encoding | ||
| + | * [[CBR]], [[ABR]] and [[VBR]] encoding methods | ||
| + | * [[Gapless]] playback with LAME-header compliant decoders | ||
| + | * [[Exact Audio Copy]] and [[CDex]] support | ||
| + | |||
| + | =MP3 Creation With The LAME Encoder= | ||
To save yourself reading & researching a lot of information, just know that with the following applications you can make the best mp3 possible for free: | To save yourself reading & researching a lot of information, just know that with the following applications you can make the best mp3 possible for free: | ||
Revision as of 17:58, 17 March 2006
MP3: MPEG 1 Layer 3
The MP3 algorithm development started in 1987, with a joint cooperation of Fraunhofer IIS-A and the University of Erlangen. It is standardized as ISO-MPEG Audio Layer-3 (IS 11172-3 and IS 13818-3).
It soon became the de facto standard for lossy audio encoding, due to the high compression rates (1/11 of the original size, still retaining considerable quality), the high availability of decoders and the low CPU requirements for playback. (486 DX2-100 is enough for real-time decoding)
It supports multichannel files (Although there's no implementation yet), sampling rates from 16kHz to 24kHz (MPEG2 Layer 3) and 32kHz to 48kHz (MPEG1 Layer 3)
Formal and informal listening tests have shown that MP3 at the 160-224 kbps range provide encoded results undistinguishable from the original materials in most of the cases.
LAME
LAME (Lame Ain't an MP3 Encoder) is the recommended encoder. It has been developed by the open-source community since 1998, and has become the highest quality MP3 encoder for most purposes.
Some benefits for using LAME:
- Highly optimised presets
- Fast encoding
- CBR, ABR and VBR encoding methods
- Gapless playback with LAME-header compliant decoders
- Exact Audio Copy and CDex support
MP3 Creation With The LAME Encoder
To save yourself reading & researching a lot of information, just know that with the following applications you can make the best mp3 possible for free:
3.97 beta 2 is the LAME version you need > download the LAME 3.97 beta 2 bundle from this page
Use the '-V 2 --vbr-new' switch
The BEST way to rip CDs to mp3 is with EAC. The following three EAC guides are very good: Guide 1 - The Coaster Factory Guide 2 - Teqnilogik Guide 3 - Essential Ripping Guide
--> The easiest way to convert WAVs is with: [url=http://members.home.nl/w.speek/all2lame.htm]ALL2LAME[/url] or [url=http://rarewares.org/mp3.html]LameDropXPd v2[/url]
Audiophile geeks have tested these applications for months, so you know it's going to be the best advice. Also, the TMB admin also use and/or recommend the above.
[url=http://www.hydrogenaudio.org/]Hydrogenaudio[/url]* have officially announced a successor to their previoulsy recommended LAME mp3 encoder version 3.90.3.
The recommended version is now [b]3.97 beta 2[/b].
See [url=http://www.hydrogenaudio.org/forums/index.php?showtopic=37574]this[/url] post for details on the 3.97 beta [url=http://www.hydrogenaudio.org/]Hydrogenaudio[/url] recommendation. See [url=http://www.hydrogenaudio.org/forums/index.php?showtopic=28124]this[/url] post for the [url=http://www.hydrogenaudio.org/]Hydrogenaudio[/url] recommended LAME settings. See [url=http://www.hydrogenaudio.org/forums/index.php?showtopic=28125]this[/url] post for a high level overview of the LAME versions.
- [url=http://www.hydrogenaudio.org/]Hydrogenaudio[/url] are widely regarded as THE digital audiophile site on the web. Most of the audio codec developers are members of the forum, and the information detailed there in stickies & posts, IMO, is the best available anywhere on the internet.
- for converting mp2 files to mp3, you'll need to use the [url=http://homepage.ntlworld.com/alex.pheysey/files/lame3.97b2exe-fixed.zip]lame3.97b2exe-fixed.zip[/url] compile, as it correctly accepts mp2 input for decoding.
