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  2. Timeline of audio formats - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_audio_formats

    A SlotMusic microSD card: an early attempt to sell pre-recorded music on an SD card Digital. Usually at 320 kbit/s MP3 on microSD or microSDHC. Blu-spec CD: Digital. PCM: 2012 Opus (file format) Digital. Opus lossy audio coding format (IETF standard, open, non-proprietary, royalty-free)

  3. 8-track cartridge - Wikipedia

    en.wikipedia.org/wiki/8-track_cartridge

    The 8-track tape (formally Stereo 8; commonly called eight-track cartridge, eight-track tape, and eight-track) is a magnetic-tape sound recording technology that was popular [2] from the mid-1960s until the late 1980s, when the compact cassette, which pre-dated the 8-track system, surpassed it in popularity for pre-recorded music.

  4. History of sound recording - Wikipedia

    en.wikipedia.org/wiki/History_of_sound_recording

    Ring-and-spring microphones, such as this Western Electric microphone, were common during the electrical age of sound recording c. 1925–45.. The second wave of sound recording history was ushered in by the introduction of Western Electric's integrated system of electrical microphones, electronic signal amplifiers and electromechanical recorders, which was adopted by major US record labels in ...

  5. Backing track - Wikipedia

    en.wikipedia.org/wiki/Backing_track

    A solo steel drum player performs with the accompaniment of pre-recorded backing tracks that are being played back by the laptop on the left of the photo.. A backing track is an audio recording on audiotape, CD or a digital recording medium or a MIDI recording of synthesized instruments, sometimes of purely rhythmic accompaniment, often of a rhythm section or other accompaniment parts that ...

  6. Timeline of video formats - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_video_formats

    A SlotMusic microSD card: an early attempt to sell pre-recorded music on an SD card Digital. Primarily used for MP3, however may also include high-quality images and videos. Stored on microSD or microSDHC. Blu-spec CD Digital. PCM: 2016 Ultra HD Blu-ray: Back of a triple layer Ultra HD Blu-Ray Disc Digital H.265/MPEG-H Part 2 (HEVC).

  7. slotMusic - Wikipedia

    en.wikipedia.org/wiki/SlotMusic

    slotMusic was a brand of microSD [1] memory card developed by SanDisk preloaded with music in MP3 format. [1] [2] They were first available at Wal-Mart and Best Buy stores in October 2008. [3] The selection of songs came from Universal Music Group, Sony BMG, Warner Music Group and EMI Music.

  8. slotRadio - Wikipedia

    en.wikipedia.org/wiki/SlotRadio

    slotRadio was a proprietary format developed by SanDisk that delivered music on a microSD memory card. Up to 1,000 songs were preloaded on microSD cards which were DRM protected. Users had no direct access to the music to copy songs, organize playlists, or download the songs from the card. [1]

  9. List of early sound feature films (1926–1929) - Wikipedia

    en.wikipedia.org/wiki/List_of_early_sound_feature...

    This is a list of early pre-recorded sound and part or full talking feature films made in the United States and Europe during the transition from silent film to sound, between 1926 and 1929. [1] During this time a variety of recording systems were used, including sound on film formats such as Movietone and RCA Photophone , as well as sound on ...