Methods and apparatuses for controlling operation of a vibrational output system and/or operation of an input sensor system

A controller for controlling an operation of a vibrational output system and/or an operation of an input sensor system, wherein the controller is for use in a device comprising the vibrational output system and the input sensor system, the controller comprising:

• an input configured to receive an indication of activation or de-activation of an output of the vibrational output system;
• and
• an adjustment module configured to, responsive to the indication indicating activation of the output of the vibrational output system, select an operating frequency of the input sensor system to reduce an interference expected to be caused by the output of the vibrational output system on the input sensory system.

An integrated circuit for use in a device comprising an input sensor system and a vibrational output system, the integrated circuit comprising a controller configured to control operation of the vibrational output system and/or the input sensor system, wherein the controller comprises:

• an input configured to receive an indication of whether an output of the vibrational output system is active;
• and
• an adjustment module configured to, responsive to the indication indicating activation of the output of the vibrational output system, select an operating frequency of the input sensor system to reduce an interference expected to be caused by the output of the vibrational output system on the input sensory system.

A method for use in a device comprising a vibrational output system and a input sensor system for controlling operation of the vibrational output system and/or the input sensor system, the method comprising:

• receiving an indication of whether an output of the vibrational output system is active;
• and
• responsive to the indication indicating activation of the output of the vibrational output system, selecting an operating frequency of the input sensor system to reduce an interference expected to be caused by the output of the vibrational output system on the input sensory system.