Sound Collections

2 thoughts to “Sound Collections”

1. Hello. I downloaded VTX files from http://www.avray.ru/music_collections/, very cool. Can you share code that shows how to read those files and play them?

   Thanks.

   Reply

   1. VTX format is YM3 format analogue with extended header.
      Also it uses LZH algorithm to pack/unpack data, you can download LZH unpacker code from StLibrary GPL http://leonard.oxg.free.fr/StSoundGPL.html

      the header is

      Off Size Type     Description
      00  2    Word     VTX format identifier (also identifies chip type):
                        7961h or 31073 dec (ay), 6D79h or 28025 dec (ym)
      02  1    Byte     Play mode:
                        Bits 0-2 stereo mode:
                        0 - MONO, 1 - ABC, 2 - ACB, 3 - BAC,
                        4 - BCA, 5 - CAB, 6 - CBA (dec)
      03  2    Word     Quant number.
      05  4    Dword    AY chip frequency.
                        Standard values:
                        ZX_Spectrum: 1773400 (001B0F58h)
                        Atari: 2000000 (001E8480h)
                        Amstrad CPC: 1000000 (000F4240h)
      09  1   Byte      Player frequency, 50 = 1/50 sec (20ms).
      10  2   Word      Year
      12  4   Dword     Unpacked size (needs for unpacking).
      16  ?   NTString  Song name (1-254 symbols), ends with zero
      ??  ?   NTString  Author
      ??  ?   NTString  Program name
      ??  ?   NTString  Sound editor program name
      ??  ?   NTString  Comment
      ??  ??  Array     Packed data...
      

      Reply