Sphero Symphony

Logo used on inserts.

Sphero Symphony is the name (not even a trademark) given by SNK to the use of stereo in some early NeoGeo games.

As it can be seen in the Art of Fighting's source code file sys/SOUND.SRC, the process simply pans sound effects left, center, or right, depending on the sprites positions on the screen. Since the NeoGeo only has 1-bit panning, there are only 3 different zones with overall constant power:

• Left, full volume
• Left + right, half volume
• Right, full volume

Panning is set by the game engine through special commands sent to the sound driver.

Nothing more than that.

Games bearing the logo

• Riding Hero
• Alpha Mission II
• Ninja Combat
• Cyber-Lip
• The Super Spy
• Mutation Nation
• Sengoku
• Burning Fight
• Ghost Pilots
• Last Resort
• Soccer Brawl
• Fatal Fury - King of Fighters
• Football Frenzy
• Crossed Swords
• Thrash Rally
• King of the Monsters 2 - The Next Thing
• Baseball Stars 2
• Art of Fighting
• Fatal Fury 2
• Andro Dunos