The present disclosure provides a method (200) performed by an audio
system (5) of a kitchen appliance (10), wherein the audio
system (5) comprises a passive
buzzer (150) coupled to a controller (100) including a processor (110) and a memory (120) having stored therein
executable instructions. Execution of the
executable instructions by the processor (110) configures the controller (100) to generate a drive
signal (1000) for driving the passive
buzzer (150) to produce a sequence of musical notes (300) forming a
musical composition, wherein the
executable instructions configure the controller (100) to generate the drive
signal (1000) according to one or more
duty cycle parameters (330, 335, 340), one or more frequency parameters (310, 315, 320), and one or more temporal parameters (305, 325, 345) for each musical note (300). The controller (100) controls the passive
buzzer (150) according to the drive
signal (1000) to produce the sequence of musical notes (300), wherein during a duration (305) of each musical note (300) defined by the one or more temporal parameters (305, 325, 345), the drive signal (1000) controls a
pitch of each musical note (300) based on the one or more frequency parameters (310, 315, 320) and a volume of each musical note (300) based on the one or more
duty cycle parameters (330, 335, 340), wherein the
pitch and volume of each musical note (300) are independently controllable such that the volume of a musical note (300) can be set independently of the
pitch of that musical note (300).