Analog Recording

Question 1

Available tape speeds

Answer 1

1 7/8 ips 3 3/4 ips7 1/2 ips15 ips 30ips

Question 2

Available tape widths

Answer 2

1/8 inch 1/4 inch 1/2 inch 1 inch 2 inch

Question 3

Most common tapes

Answer 3

Track width depend on format being used
Most common 
Cassette 1/32inch 4 tracks (Left and right side A + left and right side b) on 1/8 inch 
1/4 2 track
1/4 4 track 
1/2 8 track 
1 16 track 
2 24 track

Question 4

Tape formats

Answer 4

Mono
 2 stereo
 4 track 
1/2 track mono 
1/4 track stereo 
8 track

Question 5

Recording time

Answer 5

Divide number of feet on reel by tape speed ips

Question 6

Composition of tape

Answer 6

Magnetic coding – hold the recording binder – hold the magnetic coating on the tape
back coat – protects tape and provides marking surface
Plastic base

Question 7

Care and storage of tape

Answer 7

Never touch tape surface no smoking carry real by the hub not the flange store tapes vertically keep away from heat and magnets store at room temperature low humidity play and rewind once a year

Question 8

Tape defects

Answer 8

Cinching adhesion flaking which causes drop out cupping ridging and curling

Question 9

Selective synchronization a.k.a. sel sync

Answer 9

Process by which multiple heads on a single head block are independently switchable between record and playback functions

Question 10

Good levels

Answer 10

0VU =average operating level i.e. the middle of the swing of the needle or take it as far into the red as you can without distorting

Question 11

Magnetic fluxivity

Answer 11

Basic unit of measurement for magnetism is the Weber recording involves very small amount of magnetism – billionths of weber
nWb/m
We are not measuring static power but the flow of current per meter
nano webers per meter the unit of measurement for the intensity of magnetic fluxivity

Question 12

Magnetic fluxivity standards

Answer 12

Original standard1950 = 175 nWb/m@0VU
NEw standard 1969 = 250 nWb/m@0VU +3
New standard 1977 = 370 “” +6

Question 13

Variables that effect recording Quality

Answer 13

Tape speed effects S/N
Track width effects frequency response the faster the tape travels across the heads the better the quality the wider the track the better the quality