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  2. MP3 - Wikipedia

    en.wikipedia.org/wiki/MP3

    The MPEG-1 standard does not include a precise specification for an MP3 encoder but does provide examples of psychoacoustic models, rate loops, and the like in the non-normative part of the original standard. [72] MPEG-2 doubles the number of sampling rates that are supported and MPEG-2.5 adds 3 more.

  3. Audio coding format - Wikipedia

    en.wikipedia.org/wiki/Audio_coding_format

    A lossless audio coding format reduces the total data needed to represent a sound but can be de-coded to its original, uncompressed form. A lossy audio coding format additionally reduces the bit resolution of the sound on top of compression, which results in far less data at the cost of irretrievably lost information.

  4. Audio file format - Wikipedia

    en.wikipedia.org/wiki/Audio_file_format

    Audio file icons of various formats. An audio file format is a file format for storing digital audio data on a computer system. The bit layout of the audio data (excluding metadata) is called the audio coding format and can be uncompressed, or compressed to reduce the file size, often using lossy compression.

  5. Data compression - Wikipedia

    en.wikipedia.org/wiki/Data_compression

    When audio files are to be processed, either by further compression or for editing, it is desirable to work from an unchanged original (uncompressed or losslessly compressed). Processing of a lossily compressed file for some purpose usually produces a final result inferior to the creation of the same compressed file from an uncompressed original.

  6. Compressed audio optical disc - Wikipedia

    en.wikipedia.org/wiki/Compressed_audio_optical_disc

    A compressed audio optical disc, MP3 CD, or MP3 CD-ROM or MP3 DVD is an optical disc (usually a CD-R, CD-RW, DVD-R or DVD-RW) that contains digital audio in the MP3 file format. Discs are written in the " Yellow Book " standard data format (used for CD-ROMs and DVD-ROMs ), as opposed to the Red Book standard audio format (used for CD-DA audio CDs).

  7. Digital audio - Wikipedia

    en.wikipedia.org/wiki/Digital_audio

    Audio levels display on a digital audio recorder ()Digital audio is a representation of sound recorded in, or converted into, digital form.In digital audio, the sound wave of the audio signal is typically encoded as numerical samples in a continuous sequence.