Carlos Hasan


Not Rated


Synthetic Audio Library Software Developers Kit (SEAL SDK) lets you write applications that are able to play digital audio waveforms and music modules on many platforms. It provides low-latency mixing, hardware acceleration and dynamic digital filtering for improved sound quality. The SDK includes the SEAL API header and library files, SEAL audio library source code files (commercial license), a set of example source code files and HTML documentation.


  • Simple and powerful API interface
  • 32 simultaneous digital audio channels
  • Smooth pitch shifting, volume and panning controllers per channel
  • Smart digital filtering for improved sound quality
  • Efficient digital audio waveform mixing algorithms combined with uncompromising low-level optimizations
  • Importing of wave and music file formats such as Protracker 1.1, MultiTracker 1.0, Scream Tracker 3.0 and FastTracker 2.0 modules
  • Performance tuned for the i486 and Pentium processors
  • Native support in DOS for hardware wavetable accelerators such as the Sound Blaster AWE32, Gravis Forte's UltraSound, and normal digital audio devices such as the Sound Blaster 1.5/2.0/Pro/16, Pro Audio Spectrum 16, Windows Sound System, Ensoniq Soundscape and Aria soundcards
  • RIFF/WAVE waveform file support
  • MOD/MTM/S3M/XM module file support
  • DirectSound support in Windows 95/98

Purchase Information

The SEAL SDK has a few pricing options. You must read the detailed licensing information at the Product Home Page for more details. Below is a summary of the three basic licenses.
  • Freeware developers may use the SDK at no charge.
  • Shareware developers must pay $60 for an unlimited royalty free license.
  • Commercial software developers must pay $1500 for an unlimited royalty free license.


  • DOS, Extended DOS, Windows 95/98/NT, OS/2, BeOS or Linux
  • Compiler Support:
    • Borland C++ 4.5 compiler for DOS and Win32s
    • WATCOM C/C++ 10.0 compiler for DOS and Windows
    • Microsoft Visual C++ 4.1 compiler for Windows 95
    • DJGPP 2.0 port of GNU C/C++ compiler for DOS
    • GNU C/C++ 2.7.0 for Linux (a.out and ELF)
    • Metrowerks CodeWarrior C++ for Intel BeOS Release 3
    • EMX port of GNU CC 2.7.x for OS/2 platforms
  • Hardware Support:
    • Sound Blaster 1.0, 1.5, 2.0, Pro I and II, 16/ASP, 32, AWE32 and PCI64
    • Windows Sound System
    • Ensoniq Soundscape, Soundscape Elite and AudioPCI cards
    • Gravis Ultrasound, Ultrasound Daughterboard and Ultrasound MAX
    • AMD InterWave-based boards
    • Pro Audio Spectrum, Plus and 16
    • Aria sound cards


As of version 1.0.7, the source code is included under the GNU Lesser General Public License (LGPL). 252.9 KB