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bsvplay(1)			    hxtools			    bsvplay(1)

Name
       bsvplay -- convert BASICA music data to PCM

Syntax
       bsvplay [-i part] [-q part] [-r rate] [file...] | aplay -f dat -c 1

Description
       bsvplay will convert BASICA binary music	data to	linear 16-bit raw PCM.
       Normally, you will be wanting to	pipe it	into a	raw  PCM  player  like
       aplay(1)	 to actually output it to a sound device. Be sure to lower the
       volume beforehand to avoid nasty	surprises that come with square	waves.
       By  default,  bsvplay  will  mix	1:1 square:sine	waves to give a	medium
       tone hardness.

       Do note that the	music data is embedded in BSV/EXE/COM files and	 needs
       to  be manually located.	It is usually very evident from	a regular pat-
       tern in hexdumps.

Options
       -q part
	      Part to mix square waves in (default: 1.0)

       -i part
	      Part to mix sine waves in	(default: 1.0).	If -q2 -i1  is	speci-
	      fied   for  example,  the	 final	PCM  output  will  consist  of
	      2/3*squarepcm + 1/3*sinpcm.

       -r rate
	      PCM sample rate (default:	48000 Hz)

       --pianoman
	      Assume the input is Pianoman MUS.

File format
       The BASICA format is defined 6-byte tuples  of  divisor,	 duration  and
       pause.

	    struct bsv_insn {
		 uint16_t divisor;
		 uint16_t duration; /* in ticks	*/
		 uint16_t af_pause; /* in ticks	*/
	    };

       where  divisor  specifies  the divisor value that it directly handed to
       the x86 PC speaker. The following formula holds:

	    frequency =	1193181	/ divisor;

See also
       aplay(1), qplay(1), hxtools(7)

hxtools				  2008-02-06			    bsvplay(1)

Name | Syntax | Description | Options | File format | See also

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