A speaker is a transducer electroacoustic used for sound reproduction. One or more loudspeakers can form an acoustic screen.In transduction remains a dual procedure: eléctrico-mecánico - acoustic. In the first stage converts the electrical waves into mechanical energy, and the second converts mechanical energy into acoustic energy. It is the door through which leaves sound abroad from equipment that enabled its amplification, transmission by telephone or radio media, or its treatment.The sound is transmitted through sound waves through the air. The ear captures these waves and transforms them into nerve impulses that reach the brain. If you have a voice recording, of music digital or magnetic media, or if you receive these signals by radio, it will be available at the exit of the apparatus of electric signals which must be converted into audible sounds; the loudspeaker is used for this.
