An artificial inner ear includes a speech processor that operates based on electricity generated by a thermoelectric transducer module, in which numerous thermoelectric elements join between oppositely arranged upper and lower substrates each having numerous electrodes. A heat absorption layer composed of a heat conductive material such as a resin, rubber, and metal is attached to the upper substrate of the thermoelectric transducer module. The heat absorption layer has deformability in shape in conformity with a prescribed part of the human body and is heated using human body temperature so as to cause a temperature difference between the upper and lower substrates, thus generating electricity in the thermoelectric transducer module. A heat-dissipation member composed of aluminum can be attached to the lower substrate so as to increase the temperature difference.