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  2. Comparison of audio coding formats - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_audio_coding...

    For example, MP3 and AAC dominate the personal audio market in terms of market share, though many other formats are comparably well suited to fill this role from a purely technical standpoint. First public release date is first of either specification publishing or source releasing, or in the case of closed-specification, closed-source codecs ...

  3. Compact Disc Digital Audio - Wikipedia

    en.wikipedia.org/wiki/Compact_Disc_Digital_Audio

    The audio bit rate for a Red Book audio CD is 1,411,200 bits per second (1,411 kbit/s) or 176,400 bytes per second; 2 channels × 44,100 samples per second per channel × 16 bits per sample. Audio data coming in from a CD is contained in sectors, each sector being 2,352 bytes, and with 75 sectors containing 1 second of audio.

  4. Audio file format - Wikipedia

    en.wikipedia.org/wiki/Audio_file_format

    An Audiobook format, which is a variable-bitrate (allowing high quality) M4B file encrypted with DRM. MPB contains AAC or ALAC encoded audio in an MPEG-4 container. (More details below.) .act: ACT is a lossy ADPCM 8 kbit/s compressed audio format recorded by most Chinese MP3 and MP4 players with a recording function, and voice recorders .aiff ...

  5. Transparency (data compression) - Wikipedia

    en.wikipedia.org/wiki/Transparency_(data...

    Transparency, like sound or video quality, is subjective. It depends most on the listener's familiarity with digital artifacts, their awareness that artifacts may in fact be present, and to a lesser extent, the compression method, bit rate used, input characteristics, and the listening/viewing conditions and equipment. Despite this, sometimes ...

  6. List of sound chips - Wikipedia

    en.wikipedia.org/wiki/List_of_sound_chips

    Nintendo 64 console DSP, [134] combined sound and graphics processor, ADPCM, MP3 support [135] [136] [137] Sharp Corporation: Sharp SM8521 1997 1 8 32,768 Game.com handheld Sony: Sony SPC700 (Nintendo S-SMP) 1990 8 16 32,000 Super Nintendo Entertainment System console Bit Rate Reduction (BRR) ADPCM [138] [139] Sony SPU (Sound Processing Unit ...

  7. 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).

  8. Comparison of analog and digital recording - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_analog_and...

    The Super Audio CD (SACD) format was created by Sony and Philips, who were also the developers of the earlier standard audio CD format. SACD uses Direct Stream Digital (DSD) based on delta-sigma modulation. Using this technique, the audio data is stored as a sequence of fixed amplitude (i.e. 1-bit) values at a sample rate of 2.884 MHz, which is ...

  9. List of codecs - Wikipedia

    en.wikipedia.org/wiki/List_of_codecs

    Linear pulse-code modulation (LPCM, generally only described as PCM) is the format for uncompressed audio in media files and it is also the standard for CD-DA; note that in computers, LPCM is usually stored in container formats such as WAV, AIFF, or AU, or as raw audio format, although not technically necessary.

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