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TurboSlide Harp
– User Guide, page
VER. 11.02.11, ©AntakaMatics, Inc. 2011
BACKGROUND
Since the very origins of the harmonica, dating back to the early Chinese Sheng 3000 years
ago, its physical principles of operation have remained basically unchanged. The sound
generator, the free reed, produces a note by periodically interrupting the flow of air through the
instrument. The pitch of the note produced by reed is determined by three factors: its mass, its
stiffness, and the resonance of the air path (which includes the player’s oral cavity.)
draw
blow
AIR CHAMBER
BLOW
REED
UPPER
REED PLATE
COMB
LOWER
REED PLATE
DRAW REED
REED SLOT
REED SLOT
RIVET
Cross Section of the Diatonic Harmonica
As you are probably aware, the player may alter the mass and stiffness the reeds by sanding,
scraping or filing material from either the tip or the root, respectively. He/she may also modulate
the resonance of the air path through
bending
or
overbending
.