ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,744,498, issued on Sept. 22, was assigned to HARMAN INTERNATIONAL INDUSTRIES Inc. (Stamford, Conn.).
"Audio amplifier" was invented by Ebing Shen (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides an audio amplifier circuit, including: a modulator circuit configured to modulate an audio input signal into a pulse width modulation (PWM) signal; a switch stage circuit configured to receive the PWM signal and amplify the PWM signal; a demodulator circuit configured to receive and demodulate the amplified PWM signal to obtain a demodulated audio signal, and to output the demodulated audio signal to a speaker; and...