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 pattern 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 specified 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)