Best audio format

I want to get an ipod nano for my daughter and thought I'd start importing some CDs (the once that still play) into itunes. But - what format shall i choose? I imported a track with renaissance music for a test, as Apple Lossless and as AAC (256 b/s). I didn't like the AAC very much, but the Apple lossless file is to big.
Any sophisticated opinions? Remember - I know Apple lossless is lossless and ergo results in huge files, and the MP3/AAC compression will do for most Metallica sessions. I don't know... the AAc 128 bit files from itunes sound better than the AAC/256 file I created.
Comments welcome!

MP3 o r MP4 are the best for an iPod.

Similar Messages

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    Apple Lossless would give you quality identical to that of the original CD, but the files will be very large. A 3-minute song in Apple Lossless will be around 18 megabytes, versus about 6 megabytes for the same song compressed with AAC at 256 kbps. For an iPod, Apple Lossless is probably not an optimal format, since unless you have very high quality earphones or connect your iPod to a good stereo playback system, you won't really take advantage of the quality of Apple Lossless.
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    mp3...lol.
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    bobmcinnis wrote:
    > Someone is doing a voiceover and she said she can send
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    <urami>
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  • What settings give the BEST audio quality (original audio CD to iTunes)

    Further to my last post, can ya'll PLEASE help me get the bottom of this? I have heard so many different opinions & need to resolve ASAP....
    What pref' settings will give me the VERY BEST audio quality, when importing original audio CD's into iTunes 4?
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    Cheers - Sweetamix.

    You are finding out that the answer to this question tough. Everyone has their own opinion on this one.
    I saved the responses to a topic I opened six months ago on this same subject. I saved them and cut and pasted them into one document. Here were the answers I received. Good luck. bob
    Subject: Re: Classical Music & Bitrate
    Date: Sunday, June 26, 2005 11:12 PM
    To: <[email protected]>
    RE: Classical Music & Bitrate
    My experience with classical music (and music in general) is that the higher the bitrate, the better the quality and richness of the music. On the other hand, there is a limit to how much distinction your ears can make, and I think that anything above 192 kbps (mp3 format) is not significantly better (and not worth the larger file size). And in terms of volume adjustment, I personally have not found any need for it.
    RE: Classical Music & Bitrate
    I copied the same CD to my computer in 128, 160, 192, and 320 bitrates, and I couldn't tell a difference between any of 'em. I was listening to them with Grado SR60 headphones too.
    RE: Classical Music & Bitrate
    I’m sure you will get several if not many responses. You may also find they vary with the preference of the individual. However there are some rules of thumb. Generally speaking I think you will indeed find the higher the bit rate brings you closer to the CD sound.
    Certainly, 32-bit rate does not offer very good sound quality. Actually going from 32 to 320 should have been noticeably better, if not…. Then you’re in good shape. Because what you don’t know is there, can’t be missed.
    Also, the bit rate is only part of the equation. What format codec <http://docs.info.apple.com/article.html?artnum=51910> are your songs ripped to.
    Consider the following - iPod: About compatible song formats
    <http://docs.info.apple.com/article.html?artnum=61476>
    MP3 (from 32 Kbps to 320 Kbps)
    MP3 Variable Bit Rate (VBR)
    AIFF
    WAV
    M4A AAC
    Apple Lossless Encoder
    It sounds to me as though your songs may be in MP3 format. As a suggestion you might try ripping your CD’s to 128 AAC format. The general consensus is that AAC is better than MP3. Give it a shot…for the heck of it, and see what you think.
    Finally in the end…..it matters little what we all might think….If you think your sounds are better ripped at a MP3 320 bit rate……Great. If not…experiment, and play around till you find what sounds wonderful to you!
    RE: Classical Music & Bitrate
    Sorry for taking so long to get back to this thread: had two twelve-hour work days in a row.
    I did a Get Info on a typical piece in my iTunes and got this
    Kind: AAC Audio File
    Bit Rate: 128kb (have some at 192 & 2 or 3 at 320)
    Sample Rate: 44.100 kHz
    Profile: Low Complexity
    Channels: Stereo
    Volume: +2.3
    I was troubled that one responder couldn't tell the difference among 128, 160, 192, and 320 bitrates even using Grado SR60 headphones!
    And another seems to be of a similar opinion when he says that I think that anything above 192 kbps (mp3 format) is not significantly better (and not worth the larger file size). Does this apply to AAC format, too?
    However, I am going to continue to add tunes at the 320 bitrate - for a while - because I swear that I can tell a difference when I play them over my car radio via the cassette adapter.

  • Some advice on audio formats and converting tracks

    _*Some thoughts about audio formats and conversions. These are all supported by iTunes unless stated otherwise.*_
    General principles : there is no point in converting an already compressed track into a higher bit rate - it may seem as if this would give an improved quality, but once information has been lost through compression, there is no recovering it. The sound MAY be improved subjectively through the use of an appropriate EQ setting.
    This is not a definitive list : other formats, for example the one used by Real Player, and the ATRAC minidisc codec used by Sony, are not listed : many of the following can be used in iTunes, or are reasonably well-known.
    To use one of the available formats, they should be set in the Importing tag in *iTunes Preferences* (Advanced prior to iTunes 8, now in General). Once set, the format is used for importing CDs, but can also be used to convert tracks already in iTunes (using the Advanced menu : +Convert Selection to xxx+ ). It is not used when dropping files onto iTunes, or using Add To Library.
    1. _Lossless formats_
    Certain high-quality audio formats are "Lossless". This means that if the track is re-converted into the same format (after editing, for example), it will not degrade no matter how many times that is done.
    .AIFF - a format (common in Macs) representing full CD quality. Bit-rates are over 1400 kbps; +1 minute of music is approx 10MB.+
    .WAV - more or less the same as .AIFF but a Windows format.
    *Apple Lossless* - a 'once-only compression', applied to .AIFF or .WAV tracks to retain quality but reduce file sizes. A little (totally inaudible) information is lost, but also a more efficient 'codec' (compression algorithm) is involved. +1 minute = approx 5MB.+
    .FLAC - similar to Apple Lossless, but less proprietary (a more open standard). Not supported by iTunes.
    2. _'Lossy' formats_
    These formats are so-called because each time the conversion is done, the track is re-compressed, and more information is lost even if the file size remains the same. Various quality settings can be chosen, from around 320 kbps (high) down to below 128 kbps, though 128 is reckoned to be the lowest acceptable bit rate to listen to music in stereo.
    In general, the higher the input quality, the higher the output quality when 'stepping down'. Therefore an .AIFF track converted directly to 128kbps 'lossy' will sound better than a 256kbps track re-compressed to the same 128kbps.
    .MP3 - a standard audio compression format that has been around for many years. Common everywhere, and supported by virtually all contemporary music players. The codec has been improved so that modern MP3s sound markedly better than earlier versions. +1 minute @ 128 kbps = approx 1MB.+
    .AAC - a superior codec to MP3 (though the quality gap has narrowed), which has been chosen by Apple as the iTunes format of choice. Nowadays, a track at 128 kbps .AAC will sound around the same quality as the same track at 160 kbps MP3. +1 minute @ 128 kbps = approx 1MB.+
    .WMA - Windows' own proprietary lossy codec. It seems to have a bright and sparkly sound compared to MP3, but lacks a decent 'bottom end', i.e. the bass tones are somewhat lacking. Not supported by iTunes. (Can be played using VLC).
    .OGG - the open standard Ogg Vorbis format, often held to be superior to MP3 but little-used and therefore not supported in many platforms and players, including iTunes.
    When considering which format to use, the most important things to remember are
    1. how will these tracks be played back? (on a hi-fi? an iPod? expensive earphones?)
    2. the quality will depend finally on the judgement of the listener (some ears are better at telling small differences in quality than others)
    3. how much space is available to store (and expand) the music library?
    As for quality, a good way to decide is to "audition" different formats. Using one CD track known to you, try importing it at several different formats and bit rates (using iTunes Preferences). Then just play them, see which sounds best to you. In this way I came to decide for myself that AAC @ 256kbps was the best for me +(1 minute = approx 2MB).+

    The Windows version of iTunes supports importing of WMA files, converting them to one of the other formats. Mac iTunes offers now support of WMA files at all.
    Good point - and if I knew more about iTunes on Windows I would amend that and post a different version of the article in their forum.
    I accept the point about .WAV files being used also for compressed formats but didn't want to make it too complicated; the most common use for .WAV I believe, is full quality audio.
    On the subject of Lossless compressed audio (FLAC and AL), Wikipedia has this :
    _*Difficulties in lossless compression of audio data*_
    +It is difficult to maintain all the data in an audio stream and achieve substantial compression.+ +First, the vast majority of sound recordings are highly complex, recorded from the real world. As one of the key methods of compression is to find patterns and repetition, more chaotic data such as audio doesn't compress well. In a similar manner, photographs compress less efficiently with lossless methods than simpler computer-generated images do. But interestingly, even computer generated sounds can contain very complicated waveforms that present a challenge to many compression algorithms. This is due to the nature of audio waveforms, which are generally difficult to simplify without a (necessarily lossy) conversion to frequency information, as performed by the human ear.+
    +The second reason is that values of audio samples change very quickly, so generic data compression algorithms don't work well for audio, and strings of consecutive bytes don't generally appear very often. However, convolution with the filter [-1 1] (that is, taking the first difference) tends to slightly whiten (decorrelate, make flat) the spectrum, thereby allowing traditional lossless compression at the encoder to do its job; integration at the decoder restores the original signal.+
    +Codecs such as FLAC, Shorten and TTA use linear prediction to estimate the spectrum of the signal. At the encoder, the estimator's inverse is used to whiten the signal by removing spectral peaks while the estimator is used to reconstruct the original signal at the decoder.+
    This seems to imply that even Lossless codecs make changes, but it IS a very complex subject. If I could still edit the main article I would remove that bit about AL losing information.

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    Couple questions. I do a lot of audio production and
    work currently. I use a gateway with Cubase, and its
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    Yes, you do indeed need sth more high end.
    I'm looking at the 17 inch Imac. Does anyone record
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    That's why we are here, and that's why you ended up in this forum as well
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    I know about Pro Tools, but it seems like there isn't
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    For your purpose, Logic does have superior mixing capabilities. In my humble opinion, only the popularity of PT made it become the choice of studios and engineers, but things are turning...
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    Logic Express? I do a lot of post production mixing
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    If you do post production mixing, forget about Logic Express altogether and go for Logic Pro. LP will accomodate tons of plug-ins, and it comes with a bunch of great one's as well!
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    In other words, yes, you will be able to use BFD in Logic by means of the AU format.
    Thanks for your time guys.
    You're welcome.

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