MIXER CIRCUIT, AUDIO SIGNAL PROCESSING CIRCUIT, METHOD FOR MIXING AUDIO SIGNALS, AND AUDIO DEVICE FOR A VEHICLE, AUDIO COMPONENT DEVICE AND ELECTRONIC DEVICE USING THE SAME

摘要

A mixer circuit includes a first D/A converter configured to convert a first digital audio signal to a first analog audio signal; an inverter configured to invert a polarity of a second digital audio signal to generate a third digital audio signal; a second D/A converter configured to convert the third digital audio signal to a second analog audio signal; and an output stage configured to add the first analog audio signal and the second analog audio signal by changing a polarity of one of the first analog audio signal and the second analog audio signal.

主权项

1. A mixer circuit for mixing two audio signals, the mixer circuit comprising:
a first D/A converter configured to convert a first digital audio signal to a first analog audio signal; an inverter configured to invert a polarity of a second digital audio signal to generate a third digital audio signal; a second D/A converter configured to convert the third digital audio signal to a second analog audio signal; and an output stage configured to add the first analog audio signal and the second analog audio signal by changing a polarity of one of the first analog audio signal and the second analog audio signal.