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Text of the page (random words):
posted here i have only recently encoded my first liquid audio files the liquid audio encoder is called the liquifier cool name files encoded with the liquifier receive either an lqt or law extension i tested the liquid audio pro 5 0 beta 2 encoder build 24 i encoded files at the max bit rate that liquifier offers which is 192 kbps this max bit rate is referred to as audiophile quality the encoded files sound perfect to me liquid audio uses an aac encoding format low complexity version see below for information on aac this is the codec that is destined to replace mp3 so you should become familiar with any encoder using it most people feel that a 96 kbps lqt file sounds the same as a 128 kbps mp3 i agree the basic free player will allow you to liquefy up to 78 kbps and the plus version us 20 will allow to to encode up to the full 192 kbps i think liquid audio uses abr but not sure the free liquid audio player and the 20 plus version can be downloaded aqui liquid audio is probably the most secure audio encoder it allows the owner to protect their music from unauthorized copying better than the other formats ironically this is why it s not very popular few people i know have even a single liquid audio file anywhere on their drives while they have literally thousands of mp3s aac advanced audio coding aac their catchy motto is store less hear more aac is what liquid audio uses discussed above whereas mp3 is based on mpeg 1 layer 3 aac is based on mpeg 2 note dvds use mpeg 2 video encoding but for audio nearly all dvds use dolby ac 3 for audio encoding some big companies are behind aac for example sony at t dolby and fraunhofer the people who invented the mp3 aac was declared an inter national standard in 1997 aac is successor to mp3 and is not backwards compatible with previous mpeg encoding formats it s part of the mpeg 4 standard aac at 128kbps claims to offer audio quality comparable to mp3 at 192kbps more info here and here the conclusion from this pdf article says to expect aac to overthrow mp3 overnight would be naive but there is no question that layer 3 mp3 is living on borrowed time you can find some aac encoders decoders plug ins here mpeg plus the best audio quality i ve heard some say that mpeg plus living audio compression is better than liquid audio it is referred to as a subband coder which breaks down the audio into small frequency bands it s a pure vbr encoder containing no fixed bitrates for each frame this type of encoder is tuned more for audio quality than small file sizes like mp3pro for example which is designed primarily for low bit rates nearly everyone in the community agrees that mpeg plus known as mpc yields better quality for a given bit rate when compared to lame mpc encodes about twoce as fast as lame if that matters to you mpc is not very good at encoding low bit rate files but excels and takes the lead producing high quality files when using higher bit rates i e 180kbps files encoded with mpegplus receive an mpc or mp extension the encoder supports both but will write mpc by default the plug in decoder also supports both extensions mpeg plus which supports bit rates up to 1 2m bps is a german college student s andree buschmann project to rewrite improve both the compression quality of audio archives generally vbr mp claims to offer better quality than mp3 for a given bitrate mpeg plus is where lossy audio archiving quality fanatics who are moving beyond mp3 are going it would be worth your time to research the pro s con s of this format especially if you have a large collection of cds you re preparing to archive i ve heard it s best to use the xtreme switch and that insane is overkill but that standard may be insufficient in some cases by using mpc you gain audio quality per bit but what do you lose mp is not a standard like mp3 you may not be able to trade with your friends as easily the biggest drawback comes from the lack of hardware support this is only an issue if you have a home or car mp3 player plan to get one or have friends who own one some people have noted a high frequency brightness with mpc that is tiring to listen to for extended periods tho only a few baddudex says that this may be caused by the de coder he says volume is raised by the decoding process with all formats of course and if you disable clipping prevention it can sound harsher cuz it s louder the opposite could also be true if you have clipping prevention enabled it could sound dull cuz the volume is lowered to prevent clipping this is not to say that it s definitely caused by that just that s what i think since nobody has shown any samples yet i read the readme file that came with the encoder it tells you not to enable clipping prevention as that will make the music sound dull it is disabled by default i d like to thank andree who writes mp for taking the time to review this page he has this to say about the brightness problem the problem he mentions is known by some testers with some samples the en decoded files show a bit more brightness in the higher frequencies sometimes this also leads to a wider stereo image the effect is never theless very small to my and most testers ears the problem is an encoder s problem in some cases there is too much quantization noise allowed for the upper frequencies this leads to a bit louder high freqs this is on my todo list the better your hearing the more likely you are to appreciate the improvements offered by mpc the question you need to answer is is the quality improvement you get from mpc enough to offset the loss of compatibility with mp3 and the loss of being able to use various mp3 hardware devices only you can answer that question the better your hearing the more likely the answer will be yes the de coder is open source but the en coder is proprietary tho currently free you can transcode an mpc file to mp3 mpc supports id3 tags but only v1 1 for the time being andree s comment the whole id topic is not related to the mpc format id tags have to be recognized by the decoder and or plug in so to support other id versions only the de coders have to be changed and these are open sourced monkey s audio will work as a front end for mpc the readme for the winamp plug in says the plug in will not play mp files created with eac i encoded wav s with monkey s that i ripped with eac and they played fine if i was going to rip encode in one step i d probably use cdex you can also find a good mpc front end batch encoder here labeled mpcbatchenc link comes compliments of spanky mpc s critics think its lack of open source will lead it into obsolescence closed source means it might not be free in the future which will dissuade some from adopting it mpc s strength lies is the quality of the files it encodes which is all that quality nuts really care about you can find more mp info here mpeg plus central good site they have a good files page here where you can download everything you need to use this encoder i put a copy of of the encoder mppenc exe in monkey s audio program files monkey s audio external and used monkey s to encode wav files that i ripped with eac you also have a put a copy of the dll in_mpp dll in winamp s plugins folder if you want to play mp files with winamp as on 10mar2002 the best mpc encoder is frank klemm s version which produces more accurate low end frequencies binaries here you can get speek s mpc batch encoder here the netherlands no id3 tags for the batch encoder have to add manually or you can use eac as a user defined encoder with the xtreme s d switch using frank s version 0 90 s or newer not o or older or insane nmt 16 tmn 32 you can usually get the very latest mpc files at musepack org i m using v0 90u as of 10mar2002 be sure you re using a user defined compression method it s located at the the bottom of the drop down box where you select the codec point it to mppenc exe and then enter the command line switches for what it s worth i test encoded bob marley positive vibration live babylon by bus standard gave me 170 kbps xtreme 200 kbps and insane 235 kbps insane nmt 16 tmn 32 320 kbps ogg vorbis note gian carlo has reviewed this page and provided valuable clarifying comments for which i m grateful ogg vorbis is a new lossy vbr encoder receiving much attention vorbis is not limited to vbr although this is the only mode currently offered the xiphophorus home page is here with a name like ogg vorbis this encoder better be good a brief faq is posted here xiphophorus a more thorough one is here vorbis com ogg vorbis has two big things going for it open source non proprietary format with no patent or royalty licensing restrictions better audio quality than mp3 for the same bit rate ogg vorbis has been around for about a year in beta format release candidate 3 for both the de coder and the en coder were released 31dec2001 you can download them here for those who like to live on the bleeding edge the very latest unofficial binaries can be downloaded here realize that the encoder is still in relatively early stages of development version 1 0 final has not yet been released many have high hopes for this encoder it has many cool features such as bit rate peeling wavlets may also be included in future releases everyone is wondering how vigorously the ogg team pursue development if they keep going the way the have ogg could be tnbt the next big thing given the encoder s early stage of development most are impressed and encouraged by what they ve seen uh heard so far but for the time being ogg vorbis still needs work the folks at digitallyimported home of the net s most popular streaming music site used to host several ogg vorbis streams but i noticed that the vorbis streams are no longer available i asked dj ari why not and he said they were buggy but will be back maybe in 6 months not sure note that a buggy streaming server does not mean a buggy encoder some say the quality of files encoded with ogg vorbis is currently rated below mp3 lame while others say a 96 kbps vbr ogg file generally sounds about the same as a 128 kbps mp3 judge for yourself i ve heard that some files encoded with ogg vorbis exhibit harshness in the high frequencies gian carlo says the high frequency harshness occurred with the rc2 release at low bit rates not with previous versions and also not with the tuned encoders and new experimental versions while mp3 s version of vbr uses psycho acoustic models ogg is based solely on noise masking coupling and ath thresholds i have no idea of what that means but i read that s how i heard it works note in reference to the above paragraph i receive an email from beni who offered clarification ogg s psycho acoustic models i found it so helpful that i copied posted it here i ve already added ogg vorbi s to my encoding arsenal and expect the format to gain popularity as it matures and more people learn about it shouldn t be long until the official v1 0 is released using ogg vorbis with windows download the latest version of winamp here and install most already have this download the vorbis decoder plug in for winamp here listed under input plug ins or get it straight from the winamp site here altho you are more likely to get the latest version at peter s site for encoding songs from cd download the latest cdex ripper here note that cdex comes with a copy of the ogg vorbis encoder tho i m not sure which one for encoding ripped wav files you can either a download the oggdrop encoder gui here or b use monkey s audio as front end d l oggenc here included with vorbis tools put a copy of oggenc in the external directory monkey s audio external if you use monkey s note in cdex go to setup and set the encoder to ogg vorbis select your bit rate then select the tracks you want push the mp3 button yea i know it s silly but that s how it is i got this mini guide from gft for a more thorough version see his full page guide here i ve used it myself and found it helpful thx jeff i finally found a list of switches arguments for ogg vorbis and posted them here thx to layer3maniac turns out the command line oggenc h ogg txt generates a text file with all the switches the default value listed in monkey s audio for ogg m3 is not valid for me the rc2 encoder makes vbr files averaging 128kbps when using monkey s as a front end because ogg is open source it s possible for folks with coding know how to modify improve the program to their liking that s what garf did the link to the page containing these files is here thx gian carlo at the above link you will find several files the libvorbis files are for linux ignore them unless you re playing with linux of course you want the files ending with exe for windows the _gt_ files are g arf t uned the files with _drop_ in them are drag n drop gui encoders the _enc_ files are command line encoders these are specially tuned improved encoders gian carlo says for 160 kbps vbr download the gt1 file otherwise grab the gt2 gt2 also contains the 160 kbps mode but i did not test it you enable the 160 kbps mode in gt1 by asking for a very high bit rate b 999 gt2 has modes tuned for 128 kbps and 350 kbps select 128 kbps by using the switch argument b128 and likewise b350 gets you 350 kbps garf is looking into a speech optimized mode for the upcoming gt3 mp3pro a new encoder named mp3pro was released june 2001 the main problem with mp3pro is that the bit rate is currently limited to 64 kbps which limits quality it sounds great for music encoded to 64 kbps and compares to files encoded with a regular mp3 encoder at 112 or even 128 kbps but most people want need more than 112 128 kbps but if you have a need for 64kbps mp3 pro is the way to go most prefer it over windows media audio wma and real audio it doesn t look like they ever plan to offer bit rates exceeding 96 kbps there is no use to the technique at bit rates higher than 96 kbps from 128 kbps on the encoder can just store the info which mp3pro would often wrongly predict mp3 pro uses an encoding format called s pectral b and r eplication sbr that doesn t work well with higher bit rates sbr artificially generates lost high freq uencies files encoded with mp3pro sound excellent for their size 64kbps files encoded with mp3 pro receive a regular mp3 file extension but will only sound good when played back with an mp3pro player if you play them back with a regular mp3 player they ll sound like crap these are the people fraunhofer who invented the original mp3 format so i will not knock them but it seems like this encoder is designed only for low bit rate files official press release here thomson multimedia download the player encoder here more info here cnet no one i ve talked to so far seems very excited about the new encoding format more info here mp3 newswire 29aug2001 nero ahead now supports mp3pro see here yahoo finance nero discusses mp3pro here digit life wrote a nice piece on mp3 pro here vqf vqf developed by yamaha claims to make smaller audio files than mp3 with better quality thei...