| 摘要 |
PURPOSE:To make it possible to generate a rhythm tone corresponding to an organism signal at any time, by generating the rhythm tone by varying the time when the organism signal rhythm tone is generated according to the arrival organism signal. CONSTITUTION:An electrocardiogram signal from a patient is amplified at 10 and then the QRS wave of the electrocardiogram is discriminated at 11. Clock pulse CP12, on the other hand, enters clock counter 13 and the output of count 13 of heart beats as to the interval from the arrival of the signal of the discriminated QRS wave to the discrimination of the next QRS wave is latched at 14 and then analog-converted at 16. Next, output voltage A of this conversion 16 is compared at 17 to output voltage B of saw-tooth wave generating circuit 15 and until voltage B surpasses A, the output of comparator 17 is held at ''H'', so that an audible tone is generated by rhythm generating circuit 18 during the above-mentioned period. Therefore, count value 13 varies with an increase in heart rate, voltage A also varies and the ''H'' time of the output signal of comparator 17 varies, so that the time when the audible tone is generated at 18 will vary. |
