Register to reply

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

by taregg
Tags: digital, record, songs
Share this thread:
taregg
#1
Feb19-14, 10:43 AM
P: 65
what the name of old system before digital system for record songs.....
Phys.Org News Partner Science news on Phys.org
Experts defend operational earthquake forecasting, counter critiques
EU urged to convert TV frequencies to mobile broadband
Sierra Nevada freshwater runoff could drop 26 percent by 2100
Vanadium 50
#2
Feb19-14, 10:46 AM
Mentor
Vanadium 50's Avatar
P: 16,385
Records.
Bandersnatch
#3
Feb19-14, 10:49 AM
P: 712
http://en.wikipedia.org/wiki/Analog_audio

adjacent
#4
Feb19-14, 10:51 AM
PF Gold
adjacent's Avatar
P: 1,496
What the name of old system before digital system for record songs

Thomas Edison invented something called "Phonograph".
timthereaper
#5
Feb19-14, 11:13 AM
P: 343
Before the phonograph or gramophone, the way to record songs was with sheet music.
jtbell
#6
Feb19-14, 11:29 AM
Mentor
jtbell's Avatar
P: 11,782
Some people still use analog records and turntables:

http://www.audioadvisor.com/Turntables/products/78/
taregg
#7
Feb19-14, 12:19 PM
P: 65
what is difference pixel shape between digital and analog screen
jtbell
#8
Feb19-14, 01:10 PM
Mentor
jtbell's Avatar
P: 11,782
Analog video doesn't have "pixels," but instead, horizontal "scan lines." See the diagram under Displaying an image on this page.

http://en.wikipedia.org/wiki/Analog_television
rcgldr
#9
Feb19-14, 10:48 PM
HW Helper
P: 7,133
Quote Quote by taregg View Post
what the name of old system before digital system for record songs.....
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.

wiki_mag_tape_audio_recording.htm

wiki_mag_tape_sound_recording.htm

Quote Quote by taregg View Post
what is difference pixel shape between digital and analog screen
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.

256bits
#10
Feb22-14, 10:55 PM
P: 1,484
Quote Quote by timthereaper View Post
Before the phonograph or gramophone, the way to record songs was with sheet music.
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....
Cowpoke
#11
Mar7-14, 01:54 PM
P: 7
Wow, thanks for making me feel old. I think I will go sell my 8-track player now. ;-)
boit
#12
Mar25-14, 03:17 PM
P: 41
Quote Quote by taregg View Post
what is difference pixel shape between digital and analog screen

Sounds so much like a homework question....


Register to reply

Related Discussions
Digital system design and PLC problems~ Engineering, Comp Sci, & Technology Homework 0
How to convert the new digital on air signal for old tv system? Electrical Engineering 4
Digital Communications System : Ideal Communication System Engineering, Comp Sci, & Technology Homework 1
Digital system design General Engineering 7
How to record songs from cassette into CDR ? Computing & Technology 4