Parameter 4: Volume; Parameter 5: Volume Envelope; Parameter 6: One Envelope; Parameter 7: Noise - AMSTRAD cpc 6128 User Instruction

If the <duration> parameter is zero, the sound will last until the end of the specified
volume envelope.
If the <duration> parameter is negative, the specified volume envelope is to be
repeated AB S ( <duration» times.
Parameter 4: <volume>
This parameter specifies the starting volume of a note. The number is in the range 0
to 15. A <volume> figure of 0 is off, while 15 is maximum. Ifno number is specified, the
computer will default to 12.
Parameter 5: <volume envelope>
To make the volume vary within the duration of the note, you can specify a volume
envelope using the separate command EN V. You can in fact create up to 15 different
volume envelopes referenced in the range 1 to 15. The <volume envelope> parameter
calls up the appropriate volume envelope reference number for use in the SOU N D
command.
Refer to the description of the EN V command.
Parameter 6: <tone envelope>
To make the tone or pitch vary within the duration ofthe note, you can specify a tone
envelope using the separate command ENT. You can in fact create up to 15 different
tone envelopes referenced in the range 1 to 15. The <tone envelope> parameter calls up
the appropriate tone envelope reference number for use in the SOU N D command. If
you have specified a negative envelope number in the ENT command, use the
absolute value of that number (i.e. without the negative sign) in this <tone envelope>
parameter of the SOU N D command.
Refer to the description of the ENT command.
Parameter 7: <noise>
A range of white noise is available, which can be switched off or added to the sound by
varying the <noise> parameter between 0 and 31.
Further information concerning sound will be found in part 2 of the chapter entitled
'At your leisure .... '.
Associatedkeywords: ENT, ENV, ON SQ GOSUB, RE LEAS E, SQ
Chapter 3 Page 74 Complete List of Keywords