Patent ID: 11937509
Assignee: CIRRUS LOGIC INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 18:
19. Circuitry for driving a piezoelectric transducer, the circuitry comprising:
driver circuitry configured to receive a processed version of an input signal received by the circuitry and to generate a drive signal for driving the piezoelectric transducer based on the processed version of the input signal,
wherein the circuitry is configured to determine a resonant frequency of the piezoelectric transducer while it is being driven by the drive signal and to pre-process the input signal based on the determined resonant frequency to generate the processed version of the input signal, so as to compensate, at least partially, for a frequency-dependent output characteristic of the piezoelectric transducer.