A wrist mounted electronic tuning device for use in tuning an acoustic musical
instrument which includes a self-adapting wristband to automatically accommodate
to a wide range of wrist sizes. Additionally, the tuning device includes sensing
means operable for sensing an acoustic musical tone produced by the musical instrument
and producing a representative electrical signal, conditioning means operable for
amplifying, pre-filtering, and shaping the electrical signal into a representative
pulse train, input means for selecting a musical note to tune to, computing means
for receiving the pulse train and selected musical note and utilizing pre-programmed
algorithms to determine the instrument's tuning condition, an output means to annunciate
the tuning condition, and a power level switching means to permit the tuner to
function in either a fully powered signal acquisition state or low power sleep state.
