Microphone; audio and microphone speakers; IP (Internet protocol) phone based hands-free device with integrated microphone and speaker for use at multipoint conferences; hands-free device with integrated microphone and speaker for use with telephone for electronic conferencing on computer networks; hands-free device with integrated microphone and speaker for video calling systems; hands-free device with integrated microphone and speaker for telephones; direction-based automatic volume adjuster for hands-free phones; hands-free kit composed of hands-free device with integrated microphone and speaker for use with telephones; telecommunication machine and apparatus for use in computer networks, namely, microphone speaker system composed of speaker microphones for audio teleconferencing; electronic machine and apparatus for use in computer networks, namely, electronic microphone speaker system composed of audio speakers and microphones for audio teleconferencing; telecommunication device used for transmitting and receiving data, sounds, and images to a network; electronic component for hands free phones in the nature of an echo cancelling device; electronic component for hands-free phones in the nature of a noise-reduction device; computer program for processing sound signals for transmission and/or acoustic reproduction, electronic storage of data, controlling electrical/electronics devices in hands-free microphone speaker systems