Controlling audio system involves generating pulse width modulated signal modulated by audio signal, output on data line of audio interface with bit width is halved to double sampling rate

摘要

The method involves the audio interface (P) generating a pulse width modulated signal that is modulated by an audio signal (A). The pulse width modulated signal is output on the data line of the audio interface and its bit width is halved to double the sampling rate. The PWM signal can be symmetrical or asymmetrical. The audio interface consists of a digital signal processor with a pulse width modulator (PWM). Independent claims are also included for the following: an audio system.