Abstract: A participant response system comprises a plurality of handsets for allowing a participant of an event to input a response. Each handset comprises a wireless handset having a keyboard for allowing a user to input a response. The handsets are configurable either as a participant response handset to allow a participant to enter a response, or as a base station. The handset also includes audio capability to allow participants to receive and input audio.

Abstract: An audio communication system is provided for generating an audio output for users in a region, the system comprising a plurality of portable communications devices for use by a respective plurality of users, each communications device comprising a microphone for inputting an audio signal by a user, a loudspeaker for generating an audio output for said user, said loudspeaker being adapted to output said audio output in at least a first frequency band, and a wireless interface for wireless communication to transmit said audio signals from said microphone and receive audio signals derived from an audio source for generating said audio output by said loudspeaker; and at least one low frequency loudspeaker device having an interface for receiving audio signals derived from a microphone of another communications device, and a low frequency loudspeaker adapted to output a low frequency audio output in said region only in a second frequency band lower than said first frequency band.

Abstract: A participant response system comprises a plurality of handsets for allowing a participant of an event to input a response. Each handset comprises a wireless handset having a keyboard for allowing a user to input a response. The handsets are configurable either as a participant response handset to allow a participant to enter a response, or as a base station. The handset also includes audio capability to allow participants to receive and input audio.

Abstract: A participant response system comprises a plurality of handsets for allowing a participant of an event to input a response. Each handset comprises a wireless handset having a keyboard for allowing a user to input a response. The handsets are configurable either as a participant response handset to allow a participant to enter a response, or as a base station. The handset also includes audio capability to allow participants to receive and input audio.

Abstract: A wireless voting method is disclosed. The method comprises generating an optical voting indication (140), and controlling a plurality of handsets (112), capable of electromagnetically transmitting a vote input (150) by a user, and a vote registering arrangement (130), capable of receiving and registering transmitted votes, to register votes for handsets responding to the optical indication (140) in a predetermined manner.