STMicroelectronics International N.V. (20240429881). AUDIO AMPLIFICATION METHOD AND DEVICE
Contents
AUDIO AMPLIFICATION METHOD AND DEVICE
Organization Name
STMicroelectronics International N.V.
Inventor(s)
Edoardo Botti of Vigevano (PAVIA) (IT)
Francesco Stilgenbauer of Rho (MI) (IT)
Matteo De Ferrari of Oleggio Castello, Novara (IT)
Edoardo Bonizzoni of Pavia (IT)
AUDIO AMPLIFICATION METHOD AND DEVICE
This abstract first appeared for US patent application 20240429881 titled 'AUDIO AMPLIFICATION METHOD AND DEVICE
Original Abstract Submitted
signal processing is applied to a digital input audio signal. an analog audio output signal is provided based on the digital input audio signal via a switching converter circuit driven by a pwm signal. the analog audio output signal is sensed to generate an analog feedback signal. the applied signal processing includes: producing a digital error signal indicative of a difference between the digital input audio signal and a digital word signal; applying digital-to-analog conversion to the digital error signal to produce an analog replica of the digital error signal; producing an analog difference signal indicative of a difference between the analog replica of the digital error signal and the analog feedback signal; applying analog-to-digital conversion to the analog difference signal to produce the digital word signal; applying digital filtering to the digital word signal to produce a filtered digital word signal that generates the pwm signal.
