What the name of old system before digital system for record songs

  1. what the name of old system before digital system for record songs.....
  2. jcsd
  3. Vanadium 50

    Vanadium 50 17,442
    Staff Emeritus
    Science Advisor
    Gold Member

  4. Bandersnatch

    Bandersnatch 1,257
    Gold Member

  5. adjacent

    adjacent 1,533
    Gold Member

    Thomas Edison invented something called "Phonograph".
  6. Before the phonograph or gramophone, the way to record songs was with sheet music.
  7. jtbell

    Staff: Mentor

  8. what is difference pixel shape between digital and analog screen
    Last edited: Feb 19, 2014
  9. jtbell

    Staff: Mentor

  10. rcgldr

    rcgldr 7,409
    Homework Helper

    Analog magnetic tape decks like the ones used in recording studios have very high quality and are/were used to make the "masters" for recording sessions.



    Digital pixel height / width aspect ratio is 1 / 1. NTSC analog HD pixel aspect ratio is also 1 / 1. NTSC standard definition 480i pixel aspect ratio = (480*4) / (704*3) = 10 / 11 or .909090... . This make it's it really awkward to interpolate / upconvert NTSC standard definition video (like a standard DVD) on a digital monitor. The image could be horizontally stretched by 10% to end up with 1 /1 aspect pixel ratios, but the stretched image would be noticable.

    Analog CRT's can adjust beam width, sweep rate, and transition rate, so aspect ratio is variable with these system. Mitsubishi used to make HDTV's that use 3 CRT displays, one red, one green, one blue, in a rear projection system (the CRTs pointed up to a mirror so the image was reflected on a display screen), but 2006 was the last year they made these. The CRT based HDTV had 480p and 1080i as "native modes", taking advantage of beam adjustment so interpolation was only used for 720p, interpolating 4x4 squares of pixels into a 6x6 squares of pixels.

    The old analog CRT computer monitors, being able to adjust beam parameters can handle a wide variety of resolutions, and although there is a mask with a fixed number of "holes", the beam can partially cross and/or start/stop between mask hole boundaries, allowing for what at the time were high resolutions, like 2048 x 1536, or 1920 x 1440 (both 4:3 ratios). Sony made a "wide" screen CRT that could display 1920x1080 (16:9 ratio). Example image of a "white" arrow from a CRT screen. Note the partially painted "holes" at the edges. If you stand far enough back you'll see a white arrow.

    Last edited: Feb 19, 2014
  11. Oh, so true.
    And before that is was through verbilization and memory from one generation to the next.

    Geez, I wonder if any parent sings to their child, let alone knows of any bedtime songs to lull their child to sleep anymore!

    Another method, besides memorization, printed and electronic was mechanical. Everyone should know about the wind up jewelry box with the mirror, spinning balerina and music when opened. A drum with pin projections rotated and doing so the pin projections picked at metal forks tuned to certain notes and a short little melody was played.

    The next big thing was the self playing piano....
  12. Wow, thanks for making me feel old. I think I will go sell my 8-track player now. ;-)

  13. Sounds so much like a homework question....
Know someone interested in this topic? Share a link to this question via email, Google+, Twitter, or Facebook

Have something to add?

Draft saved Draft deleted