it seems the sounds of a healthy heart are markedly different from those of unhealthy hearts.
Well, this isn't news is it? The sound made by the heart comes from one main souce (the sound of the valves snapping open and shut) and one "subsidiary" source (the roar of liquid moving at high speed through narrow pipes). Damaged hearts make different sounds for perfectly sensible physical reasons. Sound has been used as a diagnostic tool for centuries.
graves's aim is to create tools that help people program their heart to sound and run healthier, by playing back sounds of healthy hearts.
graves, who is also a holistic healer, is not marching to his own beat on this one.
some of the biofeedback tools involve running a cd of healthy heart sounds to an 'electrified' acupuncture needle, which is inserted in an acu-zone in the patient's wrist. the rhythmic pulses are 'read' by the patient, who then learns to re-program his heart to beat properly.
And there I confess I switched off. While there is much sound physiology to many aspects of so-called "alternative" therapy, and while bio-feedback is demonstrable (heck, you can do it yourself without stuff like "electrified needles in acu-zones"), much of the rest of that is, to me, indistinguishable from snake oil.