Macworld Forums: Human Pulse Measurement - Macworld Forums

Two questions.
Please provide sources for microhpones and/or pressure transducers to take the human pulse both by radial arterial (wrist) pressure against the presure transducer, and the measurement obtained by placing a mivrophone against a bone in the wrist.
and
Software that will produce wavelets representing tanget dr/dt the sensed pulse wavelet.