MTD2 class 8

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In Class

  • Rendering in Premiere

Digital Theory

Word of the Day Analog How stuff works - How Analog and Digital Recording Works

Analog vs. Digital the arguments in a nutshell

Analog Digital Good
Infinite dynamic quantization (infinite resolution) Quantization error fix - more bit depth/oversampling
Good? - The warming effects 'we're used' to from tape compression. Good?-'Perfect' reproduction of high frequencies - 'soundz harsh fix - 'using warm-sounding mikes and preamps (tubes)'
Bad - Tape noise and generation loss Good - 'no generation loss'
Bad - 'Cheap recordings sound cheap' Good - 'cheap recordings sound good but digital'

* 'anything in quotes is what I like to call an opinion


Other Opinions

analog winner http://www.segall.com/atr.html

analog winner http://www.digido.com/analog_versus_digital.html

comparison http://www.outersound.com/osu/recording/

ana-dig.html Number Systems

Hexadecimal Base 16 Decimal Base 10 Octal Base 8 Binary Base 2
0 0 0 0000
1 1 1 0001
2 2 2 0010
3 3 3 0011
4 4 4 0100
5 5 5 0101
6 6 6 0110
7 7 7 0111
8 8 10 1000
9 9 11 1001
A 10 12 1010
B 11 13 1011
C 12 14 1100
D 13 15 1101
E 14 16 1110
F 15 17 1111

Binary Numbers

As Humans we use a 10 base numbering system. For machines this numbering system is impractical.

Gottfried Willheml von Leibnitz devised the binary number system in 1679

Converting Binary Numbers

Binary->Decimal

   110102 = (1 * 24) + (1 * 23) + (0 * 22) + (1 * 21) + (0 * 20) = 1610 + 810 +  0 + 210 + 0 = 2610

Dividing by two

integer remainder binary #
26
26/2 0 0
13/2 1 1 0
6/2 0 0 1 0
3/2 1 1 0 1 0
1/2 1 1 1 0 1 0
0/2 that's it kids

for more info see Dr. Dave's Class readings (i believe it's in week 2)Daves text

Base2


Each new bit doubles the number of intervals.


20 =1 monochrome, often black and white
21 =2
22 =4
23 =8 Most early color Unix workstations, VGA at low resolution, Super VGA, AGA http://en.wikipedia.org/wiki/Web_colors#Web-safe_colors
24 =16
25 =32
26 =64
27 =128
28 =256
29 =512
210 =1024
2 11 =2048
212 =4096
213 =8192
214 =16384
215 =32768
216 =65536 "thousands of colors" on Macintosh
220 =1048576
224 =16777216 Truecolor or "millions of colors" on Macintosh systems
232 = 4,294,967,295 refers to 24-bit color (Truecolor) with an additional 8 bits
264 = 18,446,744,073,709,551,616 = 16 exabytes. That's more than 18 billion billion bytes.

Large Bit Names

Name Abbr. Size
Kilo K 2^10 = 1,024
Mega M 2^20 = 1,048,576
Giga G 2^30 = 1,073,741,824
Tera T 2^40 = 1,099,511,627,776
Peta P 2^50 = 1,125,899,906,842,624
Exa E 2^60 = 1,152,921,504,606,846,976
Zetta Z 2^70 = 1,180,591,620,717,411,303,424
Yotta Y 2^80 = 1,208,925,819,614,629,174,706,176


Color Depth

1 Bit
2 Bit
4 Bit
8 Bit
16 Bit
32 Bit


Bit Depth Color Examples

http://en.wikipedia.org/wiki/Color_depth

Binary Math

OPTIONAL

Binary Math http://www.ibiblio.org/obp/electricCircuits/Digital/DIGI_2.html What can one byte (8 bits) store? 2^7 2^6 2^5 2^4 2^3 2^2 2^1 2^0 1 1 1 1 1 1 1 1 128 64 32 16 8 4 2 1 128+64+32+16+8+4+2+1 = 255

What about negative numbers? Signed Magnitude

Use the first bit as the equivalent of a +/- sign.

http://www.math.grin.edu/~rebelsky/Courses/152/97F/Readings/student-binary.html 510 in 8 bit binary 00000101

-510 in 8 bit binary Signed Magnitude 10000101 (make sure that the circuit knows you are using singed magnitude otherwise this could be interpreted as 113)


Now what can one byte (8 bits) store? +/- 2^6 2^5 2^4 2^3 2^2 2^1 2^0 0 1 1 1 1 1 1 1 + 64 32 16 8 4 2 1 64+32+16+8+4+2+1 = 127 or +/- 2^6 2^5 2^4 2^3 2^2 2^1 2^0 1 1 1 1 1 1 1 1 - 64 32 16 8 4 2 1 -64+32+16+8+4+2+1 = -127

One's Compliment

One's Compliment uses regular binary numbers to represent positive numbers. To make that number negative you just flip all the bits from 1 to 0 or 0 to 1. 510 in 8 bit binary 00000101

-510 in 8 bit binary One's Compliment 11111010

Two's Compliment

Same as One's Compliment bit add one to negative numbers 510 in 8 bit binary 00000101

-510 in 8 bit binary Two's Compliment 11111011

To figure out the sign of the answer we must check the MSB (most significant bit).If MSB is 0 number is positive, interpret normally If MSB is 1 number is negative

   * complement all bits
   * add 1
   * interpret as negative number

Premiere Audio Demo

Premiere Audio Demo

examples of style in animation

  1. cut out animation [1]
  2. Monty Python's Flying Circus [2]

Flash Tracing Demo

How to trace still images in flash

Tracing in Flash


Homework

  1. Read Chapter 3 in Sound Design for Interactive Media
  2. Render and Post and link a rought cut of your Story Boards with Audio