Speakers and Microphones - speakers. • Woofer •...

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Speakers and microphone By: Saira Tabassum
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Sound System A sound system mainly consists of three parts. They are: 1.Microphone 2. Tape 3. Speakers
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1. Microphone An instrument that converts sound waves into an electric current, usually fed into an amplifier or a recorder.
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Types of microphones: a. Lavalier: Clip on, microphone, used when only one person is speaking.
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b. Handheld microphone: is useful for “man in the street” interviews.
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c. Boom microphone: mounted on a long pole (known as a boom pole).
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2. Tape: - This device collects the sound from the microphone and amplifies it and sends it to the speaker.
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3. Speakers: Speakers are one of the most common output devices used with computer systems. Purpose of speakers is to produce audio output that can be heard by the listener.
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Audio Channels: Channels are a way for sound to travel through the
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Unformatted text preview: speakers. • Woofer • Subwoofer etc How speaker works? • The sound produced by the speaker is in the form of vibrations. These vibration cause a disturbance in the surrounding air particles. This disturbance is further passed on to the next set of air particles. This cycle continues depending on the strength of the sound made. • Suppose a telephone is ringing. We can hear the ringing even if we are standing a few meters away from the telephone. As soon as the telephone is rung, it causes a disturbance in the air. This disturbance is sent to the nearby particles and travels further. By moving further, there occurs a pressure drop in the air which pulls in particles that are even farther out and so on. This decrease of pressure is known as rarefraction. Wireless speakers in vogue Shukran...
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This note was uploaded on 01/17/2012 for the course MASS COMMU 107 taught by Professor Masror during the Spring '11 term at College of E&ME, NUST.

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Speakers and Microphones - speakers. • Woofer •...

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