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Read definitive guide by audio software developer Yuri Korzunov:
• what is the best [highest quality] audio format (codec):
WAV, FLAC, mp3, AIFF, m4a, AAC, ALAC, PCM, DSD, DSF, DFF, SACD;
• lossy and lossless compressed,
• PCM and DSD formats;
• others on Android, iOS, Mac, Windows, Linux,
• Frequently Asked Questions,
• look at infographic how to choose audio file format for you.

HD audio file conversion

Watch and share: Hi Res Audio [How it works. Sound quality. 7 Myths]

Frequently Asked Questions: Audio Formats and Codecs

Read this F.A.Q. about audio file formats (codecs), and read details below.

What is the best audio codec?

Audio file formats (file extensions) are:

WAV | WAV RF64 | WAV BWF (.wav)
FLAC (.flac)
AIFF (.aiff, .aif)
mp3/MPEG (.mp3)
AAC (.m4a)
ALAC (.m4a)
WavPack (.wv)
DSD (.dsf, .dff)
DSD DoP (.wav, .flac)
MQA (.flac)

Download free audio files..

The best audio codec is defined according to your aims: sound quality and size compression ability. Read details below.

What is the best audio format for sound quality? Which is the best quality audio format?

Best sound-quality audio formats are lossless formats. Read more about audio formats with maximal audio quality..

Which is the best sound quality?

Sound qualuty have 2 definitions:

[objective] distortion level;
[subjective] how it sounds - noce or not.

At the first sight, subjective definition may not be estimated. But, it wasn't.

Both definitions are united by psychoacoustics.

Does high res audio sound better?

It is matter of audio equipment and played back recording. High resolution give potential abilities to achieve better result for designers of audio equipment and software,

What is the best format for music?

Music require maximal abilities, that can provide audio formats (codecs).

Lossless file formats in high resolution are recommended, as default.

But, for portable audio players and mobile phones, high bitrates (256 kbps and higher) are recommended for stereo recording, that compressed by lossy codecs (mp3, AAC).

Is FLAC better than mp3? Is WAV better than mp3? Is FLAC or WAV better?

FLAC provide size compressing of audio information without losses. Thus it provide better sound quality than mp3.

Stereo mp3 with high bitrates (256 kbps and higher) almost may not be distinguished with FLAC by sound quality.

But mp3 have limited resolution audio (up to 48 kHz / 16 bit) that might not provide advantages of high resolution audio.

WAV file have no standard lossless compression ability. But FLAC support audio resolution, that limited 384 kHz / 32 bit.

Standard WAV file size is limited 4 Gbytes. It solved via WAV RF64 format using. But this format have compatibility limitations with software and devices.

Which lossless audio format is the best?

WAV audio format almost is not limited in supported audio resolution. High resolutions codec output consume big hard disk space. And for WAV files with size 4 GB and more WAV/RF64 format was applied.

FLAC have no size limitation, but its maximal resolution is 384 kHz / 32 bit in some implementations.

DSD files are separate branch, that can provide lesser distortions than PCM ones (WAV, FLAC, AIFF, etc.) in some hardware implementations. In other cases PCM files may sound better than DSD ones. Read more..

Is 320 kbps good sound quality? Is 256 kbps AAC is good quality?

Yes. Stereo mp3 or AAC 320 kbps is very similar to FLAC and WAV in the same audio resolution (sample rate and bit depth). General recommendation is 256 kbps or higher for stereo mp3 or AAC.

If you use AAC in higher resolutions or multichannel audio, higher bitrate may be desirable.

General advice: try different bitrates for same original recording(s). If you hear no difference with the original recording, use this bitrate.

Which is better mp3 or AAC?

AAC designers state, that AAC better accommodated psychoacoustical factors, than mp3. So AAC is more recommended.

Actually, you can compress original lossless file to mp3 and AAC at different bitrates (256 kbps and above). Compare these files with the original by your ears.

If you don't hear difference, use mp3 or AAC, according compatibility of your audio player or software.

If you prefer high resolution audio or multichannel recordings, you can use AAC instead mp3. Because last one is limited 48 kHz / 16 bit stereo.

What is the most popular audio format?

According to Google statistics (April 2019), it mp3 is the most popular format (among mp3, WAV, FLAC, ALAC, m4a, aac). Second place - m4a, WAV, AAC. ALAC and FLAC in the 3-rd position. m4a is a container for AAC and ALAC.

What the best audio file format for iTunes?

To maximize sound quality use lossless AIFF and ALAC (*.m4a).
Convert similar lossless audio files to mp3 and m4a and compare its sound.
Bitrates 256 kbps and above are recommended.

What best audio file format for car CD player?

If car stereo supports FLAC or WAV files, these files give maximal quality.

What is the best sounding audio file format?

To achieve maximal sound quality use lossless files.

What best audio file format for mobile phones, iPhone, iPad?

If internal phone/tablet's DAC is used, lossless PCM formats are preferable.

Some external DACs support DSD.

Compare your audio player app sound for DSD and PCM lossless formats.

What best audio file format for editing?

It is lossless non-compressed PCM file formats (WAV, AIFF).

What best audio codec?

Lossless codecs (FLAC, WAV, AIFF) are preferable here. It is not matter compressed or not.

The developer of mp3 recommends to using AAC instead.

What best audio file format for website and web?

In general, it is compressed formats: mp3, m4a, ogg, flac.

What best audio format for movies?

Lossless multi-channel sound formats (Dolby TrueHD, DTS-HD Master Audio) are recommended for home music systems.

To keep hard disk space DTS support lossy compression.

Also, lossy AC3 may be used.

Lossy compression is recommended to web and portable applications.

What is highest quality audio format?

Sound quality of audio format

Audio format is data structure and coding type to store musical information.

Codec is software and/or hardware to code/encode audio format to processing and/or playback on DAC (digital-to-analog converter).

Additional information:

Original stuff (DSD or PCM modulation) from ADC (analog-to-digital converter) is coded to a format with encoder.

Restoring from the format to PCM or DSD modulation to playback at DAC is performed with a decoder.

Codec = encoder + decoder.

Some sound formats are called as 'audiophile file formats'. They provide higher sound quality, than 'non-audiophile' ones.

Sound quality is considered here as distortion level of original music stuff after storing into an audio file.

There are music file formats:

non-compressed: WAV, FLAC, AIFF, ALAC, DSF, DFF, SACD ISO.
lossless compressed: FLAC, APE, DTS-HD Master Audio, WavPack, DFF, SACD ISO;
lossy compressed: mp3, AAC, MQA, DTS, OGG, others.

What is mean compressed, lossy lossless format (codec)?

Compressed mean reduced-by-size audio content. As rule, lossy compression provides size compressing better, than lossless ones, because part of audio information is lost.

Audio formats (codecs): compressed, uncompressed, lossless, lossy

The best sound quality audio recording formats are called 'lossless'. They keep audio quality without any losses (audio data of original and decoded music stuff are binary identical).

Lossless formats are capable to store original musical

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