前面的几个与后面的两个应该大多家都知的
ips = inch per second
The tape recorder is the principal instrument of the classic electronic music studio. The technical quality of the composition is limited by the decks used, and may be further compromised by how the decks are used.
The factors that determine the possible quality of a recording made on any analog deck are tape speed and track width. (Surprisingly, the electronic design of the deck has a relatively small effect on quality as long as drastic flaws are avoided. The difference in price among various decks of the same format primarily reflects durability of the machine.) Speeds and widths in common use today are:
speeds widths tracks
30 ips 2" 16-24
15 ips 1" 4-16
7 1/2 ips 1/2" 2-16
3 3/4 ips 1/4" 1-8
1 7/8 ips 1/8" 2-8
You can probably find decks that run at all combinations of these, but as a general rule, the wide tapes are run at the faster speeds. The ubiquitous cassette finishes last at 1 7/8ips on 1/8" tape. The track width depends not only on the width of tape but on the number of tracks stuffed on the tape.
The format most commonly used is 1/4" tape: 2 tracks at 71/2 or 15 ips. This meets minimum standards for broadcast audio quality while remaining reasonably economical. Cassettes and 1/2" 8-track are also widely used.
[ 本帖最后由 himhui 于 08-3-18 03:32 编辑 ]
The tape recorder is the principal instrument of the classic electronic music studio. The technical quality of the composition is limited by the decks used, and may be further compromised by how the decks are used.
The factors that determine the possible quality of a recording made on any analog deck are tape speed and track width. (Surprisingly, the electronic design of the deck has a relatively small effect on quality as long as drastic flaws are avoided. The difference in price among various decks of the same format primarily reflects durability of the machine.) Speeds and widths in common use today are:
speeds widths tracks
30 ips 2" 16-24
15 ips 1" 4-16
7 1/2 ips 1/2" 2-16
3 3/4 ips 1/4" 1-8
1 7/8 ips 1/8" 2-8
You can probably find decks that run at all combinations of these, but as a general rule, the wide tapes are run at the faster speeds. The ubiquitous cassette finishes last at 1 7/8ips on 1/8" tape. The track width depends not only on the width of tape but on the number of tracks stuffed on the tape.
The format most commonly used is 1/4" tape: 2 tracks at 71/2 or 15 ips. This meets minimum standards for broadcast audio quality while remaining reasonably economical. Cassettes and 1/2" 8-track are also widely used.
[ 本帖最后由 himhui 于 08-3-18 03:32 编辑 ]
Digital Transparent Input Stage (No colorization) (Bypass)
1951 1951 Input Stage
1967 1967 Input Stage and Summing Buss
1970 1970 Input Stage and Summing Buss
1972 1972 Input Stage and Summing Buss
1980 1980 Input Stage and Summing Buss
15ips 15ips 2” Tape Head Bump and Electronics curve
30ips 30ips 2” Tape Head Bump and Electronics curve
30ipsH 30ips 1/2” Tape Head Bump and Electronics curve
IronA American Class A Transformer Input Stage – Warm Bottom
IronA 15 American Class A Transformer + 15ips 2” Tape Head Bump and Electronics curve
IronA 30 American Class A Transformer + 30ips 2” Tape Head Bump and Electronics curve
IronA 30H American Class A Transformer + 30ips 1/2” Tape Head Bump and Elect. curve
IronB British Class A Transformer Input Stage – Warm Bottom IronB15 British Class A Transformer + 15ips 2” Tape Head Bump and Electronics curve
IronB30 British Class A Transformer + 30ips 2” Tape Head Bump and Electronics curve
IronB30H British Class A Transformer + 30ips1/2” Tape Head Bump and Electronics curve
IronC American Class A Transformer Input Stage – Warm Top End IronC15 American Class A Transformer + 15ips 2” Tape Head Bump and Electronics curve
IronC30 American Class A Transformer + 30ips 2” Tape Head Bump and Electronics curve
IronC30H American Class A Transformer + 30ips 1/2” Tape Head Bump and Elect. curve
IronD American Class A Transformer Input Stage – Warm Bottom & Top IronD15 American Class A Transformer + 15ips 2” Tape Head Bump and Electronics curve
IronD30 American Class A Transformer + 30ips 2” Tape Head Bump and Electronics curve IronD30H American Class A Transformer + 30ips 1/2” Tape Head Bump and Elect. curve
IronG German Class A Transformer Input Stage – Warm Bottom -Top End Boost IronG15 German Class A Transformer + 15ips 2” Tape Head Bump and Electronics curve
IronG30 German Class A Transformer + 30ips 2” Tape Head Bump and Electronics curve IronG30H German Class A Transformer + 30ips 1/2” Tape Head Bump and Elect. curve
Tube1 Tube Electronics Input Stage – Warm Midrange Boost
Tube2 Tube Electronics Input Stage – Warm Low Freq Boost
[ 本帖最后由 himhui 于 08-3-18 04:11 编辑 ]
1951 1951 Input Stage
1967 1967 Input Stage and Summing Buss
1970 1970 Input Stage and Summing Buss
1972 1972 Input Stage and Summing Buss
1980 1980 Input Stage and Summing Buss
15ips 15ips 2” Tape Head Bump and Electronics curve
30ips 30ips 2” Tape Head Bump and Electronics curve
30ipsH 30ips 1/2” Tape Head Bump and Electronics curve
IronA American Class A Transformer Input Stage – Warm Bottom
IronA 15 American Class A Transformer + 15ips 2” Tape Head Bump and Electronics curve
IronA 30 American Class A Transformer + 30ips 2” Tape Head Bump and Electronics curve
IronA 30H American Class A Transformer + 30ips 1/2” Tape Head Bump and Elect. curve
IronB British Class A Transformer Input Stage – Warm Bottom IronB15 British Class A Transformer + 15ips 2” Tape Head Bump and Electronics curve
IronB30 British Class A Transformer + 30ips 2” Tape Head Bump and Electronics curve
IronB30H British Class A Transformer + 30ips1/2” Tape Head Bump and Electronics curve
IronC American Class A Transformer Input Stage – Warm Top End IronC15 American Class A Transformer + 15ips 2” Tape Head Bump and Electronics curve
IronC30 American Class A Transformer + 30ips 2” Tape Head Bump and Electronics curve
IronC30H American Class A Transformer + 30ips 1/2” Tape Head Bump and Elect. curve
IronD American Class A Transformer Input Stage – Warm Bottom & Top IronD15 American Class A Transformer + 15ips 2” Tape Head Bump and Electronics curve
IronD30 American Class A Transformer + 30ips 2” Tape Head Bump and Electronics curve IronD30H American Class A Transformer + 30ips 1/2” Tape Head Bump and Elect. curve
IronG German Class A Transformer Input Stage – Warm Bottom -Top End Boost IronG15 German Class A Transformer + 15ips 2” Tape Head Bump and Electronics curve
IronG30 German Class A Transformer + 30ips 2” Tape Head Bump and Electronics curve IronG30H German Class A Transformer + 30ips 1/2” Tape Head Bump and Elect. curve
Tube1 Tube Electronics Input Stage – Warm Midrange Boost
Tube2 Tube Electronics Input Stage – Warm Low Freq Boost
[ 本帖最后由 himhui 于 08-3-18 04:11 编辑 ]