If2
parameters
are
used,
these
are:
<hardware envelope> , <envelope period>
Parameter
1:
<hardware envelope>
This
parameter
specifies
the
value to send to the envelope shape register of
the
sound chip.
Parameter
2:
<envelope period>
This
parameter
specifies
the
value to send to
the
envelope period registers of
the
sound
chip.
Knowledge of
hardware
is assumed when using
hardware
envelopes. Unless you
have such knowledge,
it
is suggested
that
you use a software envelope incorporating
a suitable <pause
time>
parameter.
General
Note
that
the
total
length
of all
the
<pause time>s should
not
be
greater
than
the
<duration>
parameter
in
the
SOU
N D command, otherwise
the
sound will finish before
all
the
volume steps
have
been
passed through. (In such a case,
the
remaining
contents of
the
volume envelope
are
discarded.)
Likewise,
if
the
<duration>
parameter
in
the
SOU
N D command is longer
than
the
total
length
of
all
the
<pause time>s,
the
sound will continue after
all
of
the
volume
steps
have
been
passed through,
and
will
remain
constant
at
the
final level.
Up to 5 different <envelope section>s, (each made up of
the
above 2 or 3 parameters)
may
be used
in
an
EN
V command.
The first step of a volume envelope is executed immediately.
Each
time
a given volume envelope is set,
its
previous value is lost.
Specifying
an
<envelope number>
with
no <envelope section>s cancels any previous
setting.
Further
information concerning sound will be found
in
part
2 of
the
chapter entitled
'At your leisure ....
'.
Associated keywords: ENT,
SOU
N D
Chapter 3
Page
24
Complete
List
of Keywords
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