Power toothbrush with multiple bristle motions producing an audible sound

A power toothbrush, comprising:

• a handle portion;
• a brushhead having a set of bristles at the distal end thereof;
• a first drive signal source configured to output a second drive signal used for producing a first bristle motion having an effective cleansing action for a user's teeth;
• a second drive signal source configured to output a second drive signal used for producing a second bristle motion with an audible sound for a cognitive stimulating or relaxing effect, wherein the first and second drive signals are combined into a combined drive signal;
• and
• a drive system within the handle portion and coupled to the brushhead, wherein responsive to the combined drive signal, the drive system is configured to produce multiple primary and secondary bristle motions, which result in a cleansing effect and audible sounds for the cognitive stimulating or relaxing effect, wherein for the cognitive stimulating effect, audible sounds produced by the drive system on the brushhead increase in intensity from a start of a brushing event to an end thereof, and wherein for the cognitive relaxing effect, an intensity of the audible sounds decreases between a start and end of the brushing event.