Yamaha OPL
Videos
The OPL series is a family of sound chips developed by Yamaha. It consists of low-cost sound chips providing FM synthesis for use in computing, music and video game applications.
Yamaha YM3812 (OPL2 chip)
Creative Labs and other companies often hid the original Yamaha labels
Decapsulated YM3812, showing the die surface
OPL3 waveforms
Sound Blaster
Videos
Sound Blaster is a family of sound cards and audio peripherals designed by Creative Technology/Creative Labs of Singapore. The first Sound Blaster card was introduced in 1989.
Creative Music System sound card
Sound Blaster 1.0 (CT1320B); C/MS chips in sockets (labeled U14, U15) are seen.
Sound Blaster 1.5 (CT1320C); C/MS chip sockets (labeled U14, U15) seem empty.
Sound Blaster 2.0 (CT1350B), without C/MS and FM chipset