FIELD: medical engineering. SUBSTANCE: this device incorporates miniature phono- and electrocardiographic transducers 1 connected to preamplifier 2 whose output is connected to input of pulse shaper 3 whose outputs are connected to input of partial indication unit 4 and one of inputs of frequency comparison circuit 6. Other two inputs of frequency comparison circuit 6 are connected to outputs of upper frequency selector 5 and lower frequency selector 7 adjusted for ultimate upper and lower heart rates. Outputs of frequency discriminator 8 functioning as frequency analyzer are respectively connected to four outputs of audio frequency synthesizer 9. EFFECT: more sophisticated design. 2 dwg
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