Patent ID: 11936349
Assignee: ROHM CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. The audio circuit of claim 1, wherein the integrator comprises:
an input node, receiving the input signal;
an operational amplifier, including a non-inverting input node receiving the bias voltage;
a first resistor, disposed between the input node and an inverting input node of the operational amplifier;
a second resistor, disposed between the output terminal and the inverting input node of the operational amplifier;
a capacitor, disposed between the inverting input node of the operational amplifier and an output node of the operational amplifier; and
a switch, disposed and connected in parallel with the capacitor, turned off in the non-mute period and turned on in the mute period.