Env - AMSTRAD cpc 6128 User Instruction

ENV
EN
V
<envelope number> [ , <envelope section>][, <envelope section>]
[, <envelope section>][, <envelope section>]
[, <envelope section>]
10 ENV 1,15,-1,10,15,1,10
20 SOUND 1,200,300,15,1
run
COMMAND:
Sets the Volume ENvelope specified in the <envelope number> (in the
range 1 to 15), which is used in conjunction with the SOU N D command.
Each ofthe <envelope section>s may contain either 2 or 3 parameters:
If3 parameters are used, these are:
<number of steps> , <step size> , <pause time>
Parameter 1: <number of steps>
This parameter specifies how many different steps of volume you want the sound to
pass through during the envelope section. For example, in a section of a note which
lasts 10 seconds, you may wish to have 10 volume steps of 1 second each. In such a
case, the <number of steps> parameter used should be 10.
The available range of <number of steps> is 0 to 127.
Parameter 2: <step size>
Each step can vary in size from a volume level of 0 to 15 with respect to the previous
step. The 16 different volume levels are the same as those you will hear in the SOU N D
command. However, the <step size> parameter used can be between -128 and
+
127;
the volume level re-cycling to 0 after each 15.
Parameter 3: <pause time>
This parameter specifies the time between steps in 0.01 second (hundredths of a
second) units. The range of <pause time> numbers is 0 to 255 (where 0 is treated as
256), which means that the longest time between steps is 2.56 seconds.
Complete List of Keywords Chapter 3 Page 23