At least Pentium II with 256MB RAM.* Sound blaster 16 bits sample capability. The system should be able to support minimum Java Run Time ver 1.4. Supported OSs: Windows 2000, NT, XP, Windows 7 *Tips: The more memory and the higher processor speed the better. The maximum output frequency will be limited by the sample rate of sound card. The higher sample rate the higher and better wave shape will be generated.