MAKE A MEME View Large Image Heartbeat-thumb-transparancy.png Recording of heartbeat through measure of the transparancy of the thumb The scale on top is in seconds This is my own heartbeat and my own recording using open source program Audacity <br /> I took a 6V 3W ...
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Keywords: Heartbeat-thumb-transparancy.png Recording of heartbeat through measure of the transparancy of the thumb The scale on top is in seconds This is my own heartbeat and my own recording using open source program Audacity <br /> I took a 6V 3W light bulb used in bicycles on the top side of my thumb on my nail and a infrared sensordiode on the other side of my thumb The infrared diode was connected to the microphone input of a mp3-stick The microphone input supplied the voltage as if it was a elektret microphone The recording was read into Audacity and the signal was enlarged en filtered with a low-pass filter at 3Hz twice Public domain ECG graphs
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