Audio Equipment

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Digital data refers to information stored as zeros and ones, while analog data refers to other storage methods. While digital data has largely supplanted analog data, some prefer analog storage techniques. Many analog records have been replaced by digital storage.

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  • What are the advantages and disadvantages of a wireless microphone?

    Q: What are the advantages and disadvantages of a wireless microphone?

    A: The key advantage of a wireless microphone is that it gives greater freedom of movement. A notable disadvantage of a wireless microphone is that its operation time is limited by battery life. Compared to an ordinary condenser microphone, a wireless microphone runs on batteries that are greatly drained by the transmitting circuitry.
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  • When did the first iPod come out?

    Q: When did the first iPod come out?

    A: The first iPod came out in October 2001. When it first hit the market, the 5-gigabyte first-generation iPod cost $399. In March 2002, a 10-gigabyte iPod model was released and sold for $499.
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  • How do iPods work?

    Q: How do iPods work?

    A: The iPod, a digital music player, works by storing audio and video files on a hard drive. A graphical menu system allows users to access and play files. The device integrates with iTunes software on computers to back up files and purchase new media from the iTunes store online. Headphones are needed to hear audio on certain models of iPods, as of 2014.
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  • How do you measure sound?

    Q: How do you measure sound?

    A: While sound is most commonly measured in decibels, it can also be measured in hertz for other purposes. Decibels measure the volume of sound, while hertz are used to measure the frequency.
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  • What does RMS mean when referring to speakers?

    Q: What does RMS mean when referring to speakers?

    A: When referring to speakers, RMS stands for root mean square. It is a method used to calculate the power output of speakers for a given amount of time.
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  • What is the difference between analog and digital signals?

    Q: What is the difference between analog and digital signals?

    A: The difference between analog and digital signals is that an analog signal is a continuous electrical message while digital is a series of values that represent information. Analog is conveyed by electrical current variations. Digital signals are relayed as a series of values that a device can read, such as a digital television.
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  • What is the purpose of a neutral wire?

    Q: What is the purpose of a neutral wire?

    A: The neutral wire in electronics is the wire in which electricity returns from the hot wire. It is also connected to the ground wire.
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  • How does a sound sensor work?

    Q: How does a sound sensor work?

    A: Sound sensors work by detecting differences in air pressure and transforming them into electrical signals. Sound sensors such as microphones usually have built-in amplifiers that increase the strength of the incoming signal.
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  • What is the best karaoke system for home use?

    Q: What is the best karaoke system for home use?

    A: The best karaoke system for home use is the Memorex MKS-SS2. Also known as the SingStand 2, this system connects to mp3 players, smartphones or tablets.
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  • What do you need to furnish a home recording studio?

    Q: What do you need to furnish a home recording studio?

    A: For a quality home recording studio, you'll need a good microphone, a solid microphone stand, a pop filter, a shock mount for the microphone and all the electronics needed for recording your sound. To get even better quality, consider investing in soundproofing.
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  • How does a radio work?

    Q: How does a radio work?

    A: According to the University of Southern California, radios work by encoding information on radio waves then broadcasting the radio wave with the encoded information onto a particular frequency. Both AM and FM radios use radio waves to transmit programs on radio stations.
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  • How big is a CD case?

    Q: How big is a CD case?

    A: There are several different types of CD cases. The standard single CD jewel case usually measures 5.59 inches by 4.92 inches by 0.39 inches. Slimline cases usually measure 5.59 inches by 4.92 inches by 0.2 inches.
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  • Why won't an MP3 player work?

    Q: Why won't an MP3 player work?

    A: An MP3 player contains a number of critical components, and a single failure can cause it to stop functioning. According to Sony, The best way to test an MP3 player to see if it still works is to charge it.
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  • How do you listen through walls?

    Q: How do you listen through walls?

    A: Although sophisticated spying technology is available for purchase that uses contact microphones and amplifiers to listen through walls, it's also possible to create a listening mechanism using a small drill and plastic wrap. Because of the way the plastic wrap vibrates as sound passes through it, the sound wave travels faster as it goes through the hole, allowing for focused and efficient transmission of the sound.
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  • What are the disadvantages of a radio?

    Q: What are the disadvantages of a radio?

    A: A radio does not have the same advantages as other means of communication and entertainment such as the television and the Internet. It lacks visual appeal as no pictures emanate from a radio. A radio signal has limited strength.
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  • How loud is 50 decibels?

    Q: How loud is 50 decibels?

    A: Fifty decibels is the level of noise of a quiet conversation at home or a quiet stream. In comparison, the general base of 70 decibels is the noise level of a vacuum cleaner or of radio and TV audio.
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  • Why do singers wear earpieces?

    Q: Why do singers wear earpieces?

    A: A singer wears earpieces so he can control what he hears. A crowd or band can create background noise, which makes it hard for a singer to hear himself and the accompanying instruments or music track.
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  • What color speaker wire is positive?

    Q: What color speaker wire is positive?

    A: In dealing with speaker wires, the positive speaker wire will be silver in color. This is only visible if the insulation is clear or see-through so that color can be distinguished. The negative wire will usually be copper in color for this same instance.
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  • How do earphones work?

    Q: How do earphones work?

    A: Earphones, or headphones, work similarly to speakers in that they turn electrical energy into sound by using magnetism and the vibration of air. While a large speaker vibrates the air in the space around it to create sound, a pair of earphones only vibrates the air inside the ear canal. Earphones are usually designed as either closed-back or open-back, which affects how much sound can escape from them.
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  • What are the dimensions of a CD case?

    Q: What are the dimensions of a CD case?

    A: The standard dimensions of a CD case are 5.59 inches long by 4.92 inches wide and 0.39 inch deep. Inasmuch as some CD cases are designed to hold more than one CD, the case depth varies. On the other hand, the length and width of cases rarely vary.
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  • How does a dipole antenna work?

    Q: How does a dipole antenna work?

    A: A dipole antenna uses two conductors of the same length to detect radio waves and transmit the corresponding variable electrical current to a receiver. Each conductor represents one-quarter of a wavelength, and when combined, the dipole can detect a half-wavelength signal. The length of the two conductors determines the operational frequency.
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