COMMENT ⊗   VALID 00009 PAGES
C REC  PAGE   DESCRIPTION
C00001 00001
C00002 00002	*8 JAN 74	NEWS				LES
C00007 00003	*8 JAN 74	NEWMUS - LOADER			TVR
C00009 00004	*8 JAN 74	NEWMUS Input specification	TVR
C00010 00005	*8 JAN 74	NEWMUS Output specification	TVR
C00012 00006	*8 JAN 74	LINEN				TVR
C00014 00007	*11 JAN 74  	NEWMUS Output Specification	TVR
C00015 00008	*3 JUL 74	UDP Mode 117			TVR
C00016 00009	*27 Jun 75	Request for bug reports, suggestions	TVR
C00017 ENDMK
C⊗;
*8 JAN 74	NEWS				LES
This file is called 'MUSIC[UP,DOC] and serves to save notices, and
record  and exchange random  ideas or information.  Entries should be
similar  to  NEWS  format  so  that  string  searches  find  relevant
information. If an entry is longer  than about 30 lines  or makes the
page longer that 52 lines, it should start a new page. The format is:

_____________________________________________________________________
Date <tab> Subject <tab> Programmer
<text>


_____________________________________________________________________

Individual entries may be accessed by typing:

.R NEWS;MUSIC[UP,DOC]<return>

[For additional information,  see regular NEWS file by typing:
 R NEWS<return>?<RETURN>
*8 JAN 74	NEWMUS - LOADER			TVR

NEWMUS will now load .REL files!  To load a file, type

⊗LOAD<return>
<.rel files><altmode>

Although the LOADER will  load anything which doesn't use  a segment,
the following will not co-exist well with NEWMUS.

1. Any SAIL program.
2. Any FORTRAN program with uses FORTRAN's I/O facilities.
   Otherwise, any FORTRAN subroutine may be used.

The  routine should  expect  to  be  called with  a  FORTRAN  calling
sequence, i.e.

	JSA RA,FOO
	<address of arg1>
	<address of arg2>

For additional information,  see your DEC FORTRAN Manual.   [NEWMUS's
LOADER is a modification of the LISP LOADER.]
*8 JAN 74	NEWMUS Input specification	TVR
MUS is now the default extension for NEWMUS.
_____________________________________________________________________
*8 JAN 74	NEWMUS Output specification	TVR
An output specification may now appear in a file.  For example:

PLAY DSK:FOO.1;

Outputs to the file 'FOO.1'.  If PLAY is not followed by a space,
it takes an output specification from the teletype as always.

There are now two switch to specify type of output file in NEWMUS.

/BYTESIZE=<number>	Sets byte size to <number>
/SOUND			Inhibits output of MAXSMP at end of file.
			This is for files to go directly to DAC.

For example:

PLAY TEST.SND/BYTESIZE=12/SOUND

Writes a 12 bits sound file which could be played directly on our
DAC.  This should reduce the amount of work to generate sound for
other DAC's, such as at CMU.
_____________________________________________________________________
*8 JAN 74	LINEN				TVR


Argument list:

        1 - Amplitude
        2 - Rise time/Total time
        3 - Decay time/Total time
        4 - Total time
        5 - Array
        6 - Initial point in array

This function uses a 384 word array in three sections, to generate an
envelope  function with  separate  rise time,  intermediate  time and
decay  time.  The  rise time  and decay  time are  a function  in the
second argument, third argument and the total time.  Their  values in
seconds may be calculated according to the following formula.

                     rise time = (arg2/arg4)*P2

                     decay time = (arg3/arg4)*P2

Examples:

To obtain a rise time of .1 seconds and a decay time of .4 seconds,

LINEN(P4,.1,.4,P2,F1,TMP←0);

To obtain a 10% rise time and a 33.3% decay time,

LINEN(P4,10,33.3,100,F1,TMP←0);

The initial point in array  must be a variable and should  usually be
zero. (If it is a constant, you will clobber that constant!).
_____________________________________________________________________





















*11 JAN 74  	NEWMUS Output Specification	TVR
 You may now specify size of DAC buffer in seconds as follows:
 
 
 Output: DAC:2.5		or 	PLAY DAC:2.5;
 
 This allocates enough space for 2.5 seconds.
*3 JUL 74	UDP Mode 117			TVR
 The music programs on [1,3] which use the UDP have been patched to OPEN
 it in mode 117.  If you have any program which use the UDP in old mode
 17 and need help converting, see me.
 
 			Tovar
*27 Jun 75	Request for bug reports, suggestions	TVR
Please let me know if you know of any bugs in the music software or
have any comments, suggestions, complaints, etc.  I am going to take
some time off to make the music stuff work with JAM's DAC/ADC
hopefully without spacewar mode.  I will also try to fix any old bugs
that may be lurking and I will also open to ideas for new features.