Patent ID: 9681231
Date: 2017-06-13
CPC Classifications: H03G,H03H,H03M,H04R

Claim:
1. A conversion device for supplying a plurality of digital signals to a plurality of elements for driving at least one speaker, the conversion device for: receiving a digital audio signal; converting the digital audio signal to the plurality of digital signals, each of the plurality of digital signals having three values; and outputting each of the plurality of digital signals to each of the plurality of elements respectively, wherein converting the digital audio signal includes generating a first signal by modulating the digital audio signal by using a delta sigma modulator, generating a plurality of second signals by converting the first signal, and generating each of the plurality of digital signals by supplying each of the plurality of second signals to each of a plurality of driver circuits, and wherein the second signal is supplied to one of the plurality of the driver circuits, which is selected according to a selection history of the plurality of driver circuits.