Sound Amplification Chawinda Devi Amritsar

Sound Amplification Sound amplification device for increasing the amplitude, or power, of an electric signal. It is used to amplify the weak electric current drawn from the antenna of a radio-receiving set, the weak output of a photoelectric cell (electric eye), the diminished current in a long-distance telephone circuit, the electrical signal The output of the preamplifier is fed to the input of a power amplifier. This device takes the electronic energy from the preamplifier and increases the voltage or power of the energy, so the amplifier can deliver enough power at its output to drive loudspeakers. An integrated amplifier contains both a preamplifier and an amplifier within one device. An integrated amplifier that also contains an AM/FM radio tuner is known as a receiver. A receiver is the most common form of amplifier. Separate components (an amplifier, a preamplifier, and a tuner) are usually found in more expensive audio systems. Loudspeakers generally used in home systems come in pairs and resemble boxes. Within each box, or enclosure, there may be one or more actual speakers. The enclosure itself affects the loudspeaker’s performance. The speakers within the enclosure share the same signal. The largest speaker handles the lowest frequencies, and the smallest speaker handles the highest. The signal from the amplifier is divided up into frequency ranges and then is routed to the specific speakers. These speakers work as a single unit, reproducing the recording in the most accurate way.