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@ -9,7 +9,7 @@ Music and Audiobooks can be obtained by buying the digital files or by
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Podcasts need a so called Podcatcher.
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A Podcatcher is used to subscribe to podcasts and download them automatically.
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## Media software
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## Media Software
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If you want to keep your system clean of much data, you can use this kind of
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setup.
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@ -33,16 +33,58 @@ There are differences depending on your preffered software interface.
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It is self-hostable and can be dockerized.
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It has a web-interface and does not feature client software.
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## Audio codecs
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## Audio Formats
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An audio codec is an encoding of an audio file.
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There are lossy and lossless codecs, the latter not compromising quality for
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An audio format is an encoding of an audio file.
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There are lossy and lossless formats, the latter not compromising quality for
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smaller file sizes.
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Following is a list of codecs written about in this wiki:
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- [flac](./flac_(codec).md) is a lossless codec
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## Extract audio files from CDs
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Following is a list of specific and often used formats:
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- wav is an uncompressed lossless format
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- aiff is an uncompressed lossless format
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- [flac](./flac_(codec).md) is a compressed lossless format
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- alac is a compressed lossless format
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- ape is a compressed lossless format
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- mp3 is a compressed lossy codec
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- aac is a compressed lossy codec
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- wma is a compressed lossy codec
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- ac3 is a compressed lossy codec usually found in DVDs
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- dts is a compressed lossy codec usually found in DVDs
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### Lossy and Lossless Formats and Their Conversion
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Music files can either be encoded lossy or lossless.
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Lossless formats can be converted from and to each other without loosing
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information.
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Lossless formats can also be converted to lossy formats to make the files
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smaller and save space.
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Files should not be converted to lossy formats more than once.
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Additionally lossy formats should not be converted to lossless formats as it
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increases the file size without adding any audio information.
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These not recommended conversions are called bad conversions.
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#### Detect Bad Conversions
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The bitrate, format and the sample rate can be usually checked with simple
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tools.
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For Linux a simple software solution for this is the `file` command.
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Running it will display these features of a given audio file.
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This will however only display the format features.
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Bad convserions as described in
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[the previous section](#lossy-and-lossless-formats-and-their-conversion) can not
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be detected by this.
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A spectral analysis can detect bad conversions.
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For this a audio analyzer like
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[Sonic Visualizer](https://www.sonicvisualiser.org/) is needed.
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Select a audio file and press `Add Spectogram` under `Layer`.
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This will display a spectogram.
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Music off of a retail CD and lossless songs have frequencies that extend at
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least up to 22kHz.
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If the frequency extends up to these 22kHz the file is lossless for sure.
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If the frequency is cut before and the file is encoded in a lossless file it is
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has undergone a bad conversion and is not really lossless.
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## Extract Audio Files from CDs
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You can convert your CDs to files on your computer.
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This way you don't have to search for your CDs all the time.
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@ -55,20 +97,20 @@ This way you don't have to search for your CDs all the time.
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- [MusicBrainz Picard](./picard.md) for linux is a
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graphical user interface for tagging files of many different formats.
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## Quality analysis of different versions of an album
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## Analysis of Different Versions of an Album
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While deciding on what version of an album is the best visit
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[Dynamic Range DB](https://dr.loudness-war.info).
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It shows dynamic range scorings of each version.
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## Get additional data to an album/single
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## Get Additional Data to an Album/Single
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If additional information for an album is needed, visit
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[Discogs](https://www.discogs.com).
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Discogs has tracklists, dates and more information to nearly all versions of
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albums and singles.
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## Naming convention
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## Naming Convention
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It is suggested to place the audio files in a directory named after the album they
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belong to.
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