Friday, May 15, 2009

digital music with ogg and mp3

I have not encode (rip) any CD for a long long time, now a day you can just buy songs from Amazon mp3, iTunes. But lately I'm thinking of convert some old LP and rest of CD to digital :-)

Back in '97, I was running Windows 95 and it takes 45 minutes to rip and encode ONE song! Early days there were only few software that can correctly rip and (wave-> mp3) encode songs. Now a day there are many audio encoder software that can handle wav, ogg, mp3 ..etc. takes only 45 minutes to encode entire CD!

We'll look at two formats that I use most often. Ogg format mostly stay on my Treo 800 Smart phone, but my collection is dominant by good O'l mp3.

OGG

Ogg Vorbis is efficient and is the state of the art in audio compression technology. Used properly, recent Ogg Vorbis encoders deliver sound quality surpassing MP3 with all possible bitrates.


  • OggDropXPd, the aoTuV version with Aoyumi's code, the characters you see is Japanese just follow the English direction you'll be fine. Some of you need libmmd.dll for that to work: it's here, unzip and put it in your \Windows\system32\ folder.

  • Best quality/size ratio for Ogg Vorbis: 6 in Quality Management Mode, and here are some settings resulting in high enough quality.


  • MP3

    seem like everyone has a option about which encode to use since I'm not audiophilia but here are a few place to readup Mp3-converter.com

    To encode/decode MP3 files I recommend RazorLame, a Windows frontend for the command-line executable of L.A.M.E.. There are others out there just google for LAME.


    After you decide on the format make sure to check if your software can normalize the song. This is simply a way to make the volumes of your music “normal.” You may have noticed that some of your CDs are a lot quieter than others, and this is what normalization attempts to fix. Digital audio is basically just a big stream of numbers, one after the next.

    Normalization scans a digital audio file and finds the biggest number in the whole song. If the biggest number is only half as big as it possibly could be, then your song is really only half as loud as it could be, so the normalizer detects that and scales all the numbers up to make the volume “normal. Normalization can be really handy on compilation CDs where you don’t want to have to adjust the volume knob between tracks to maintain the desired volume.


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