Answer: Use of Slide
The answer to R.Allen's question can be found in the word
"solo", part of the tune "feet" contained in 'COSMIX'. By comparison,
it shows that the command definition on page 125 of the User Manual is incomplete
and erroneous.
It should read:
12=L ON Slide
48, 12 8 -L % down by 3 semitones
0: c/////// % = 12 eighth tones
...
OFF Slide
48, 12 8 -L % down by 3 semitones
0: c/////// % = 12 eighth tones
...
OFF Slide
The missing statement 12=L makes the descending slide (see the
minus sign that follows) start 3 semitones above 0:c. Entering -12=L...+L would
make an ascending slide going from 0:a to 0:c.
As to the length setting, I suspect '48,' to be an error. Going
down 3 semitones over 8 crotchets has little practical utility! Perhaps '6,'
should have been printed, yielding 48 as the total slide duration.
Here is an example of two slide instructions:
"twoslides"[
1: 2,
ON Slide
-48=L 48 48 +L
C 47 holds
192,/
OFF Slide
3, ON Slide
20=L 20 24 –L
g 23 holds
OFF Slide
96,/^
]
1: 2,
ON Slide
-48=L 48 48 +L
C 47 holds
192,/
OFF Slide
3, ON Slide
20=L 20 24 –L
g 23 holds
OFF Slide
96,/^
]
The first slide goes from 0:C to 1:C with a duration of
48x2=96. The second starts 20/8=2.5 tones above g, and thus goes down from 1:C to
g, over 24 beats with a duration of 24x3=72. The smoothness of a slide varies
with the instrument. The result obtained with "clarin" (from September's
AMPLINEX) is particularly good.
Note that the word 'holds' (used above and in 'COSMIX') is simply
'FOR(/)FOR'. It avoids an abundance of ///////.
Roger Sapolsky
"slidemo" [ % demo of sound effect using slide
ON Slide
3, 120 144 –L
2: C/// //// //// //// //// ////
5FOR( //// //// ////
//// //// //// )FOR
OFF Slide
0,^
]
ON Slide
3, 120 144 –L
2: C/// //// //// //// //// ////
5FOR( //// //// ////
//// //// //// )FOR
OFF Slide
0,^
]
B J Dawson
Answer: Oboe sound
An oboe sound has been sent in by Roger Calkwell and is
included in the Instruments section. He makes the following points:
Winds are notoriously difficult to synthesise! This is more
like an organ 'oboe' stop. The waveform is close(ish) but the general effect is
wooden. Try adding vibrato if you like but I think EW pitch envelopes are too drastic.
Try 2CHAN Tailed for resonant release. Play around with PITCH. Best range - 0:G
to 1:A.
Set up the following TRY line with the oboe definition in
Notepad and press RETURN:
"24, 0: G/C/D-Ed-Ec/G///^"TRY
Roger Calkwell
Question: Loading BCE from disc
After upgrading my Music 500 and buying a Watford, Acorn
compatible, disc drive, I have transferred the BCE tape content onto disc, as described
on page 8 of the Music 500 User Manual. For some reason, the disc won't load.
The leaflet supplied with the upgrade kit says that the commands *BASIC and */AMPLE
should be used. I only get the error message: 'bad command'.
However, after loading BCE from cassette, the example programs,
preset1, etc. load correctly from disc, a proof that it is OK. Has anyone met (and
solved) a similar problem?
Roger Sapolsky
Question: Sync track for tape
Can anyone help with synchronizing the Music 5000 to a
4-track tape recorder for multi-tracking for those without the MUSIC 2000 or
MIDI?
I believe it is possible by feeding a "clicktrack"
signal from a tape into the User Port of the Beeb and then using a spare player,
for example player9, as the timing controller.
This player reads the User Port and advances the time by an amount
corresponding to the time frame of the "clicktrack" - 24 pps for example.
Does anyone have the code for AMPLE Nucleus and info on connection to the User
Port?
S Wilkie
AMPLINEX
Finally, two questions from Tim Sketchley with answers from
Kevin Doyle.
Question: How do you pronounce "Amplinex"? Is it Am-plin-ex,
Ampleenex or Am-ply-nex?
Answer: Roy Follett, the inventor of the name, pronounces it
Am-plin-ex - so I think that must make it the 'received' pronunciation.
Question: How many copies of Amplinex are sent out?
Answer: About 50 copies of the first issue have been sent
out so far. We are currently trying to increase membership via publicity in the
micro magazines. Existing members can help in the membership drive by spreading
the word and, if they enjoy AMPLINEX, writing to the micro press and telling them.
A larger membership should be good news for all of us.
Published in AMPLINEX 002, November
1987
