Computer speaker

（重定向自Computer speakers）

A pair of speakers for notebook computers that are powered and audio-connected to the computer via USB

Not to be confused with PC speaker.

Computer speakers, or multimedia speakers, are speakers sold for use with computers, although usually capable of other audio uses, e.g. for an MP3 player. Most such speakers have an internal amplifier, and consequently require a power source, which may be by a mains power supply often via an AC adapter, batteries, or a USB port (able to supply no more than 2.5W DC, 500mA at 5V). The signal input connector is often a 3.5 mm jack plug (usually color-coded lime green per the PC 99 standard); RCA connectors are sometimes used, and a USB port may supply both signal and power (requiring additional circuitry, and only suitable for use with a computer). Battery-powered wireless Bluetooth speakers require no connections at all. Most computers have speakers of low power and quality built in; when external speakers are connected they disable the built-in speakers. Altec Lansing claims to have created the computer speaker market in 1990.

单词	Computer speakers
释义	Computer speakers 原声例句科技 Crash Course When it's time to play this file, an audio program needs to actuate the computer's speakers such that the original waveform is emitted. 播放此文件时，音频程序需要启动计算机的扬声器，以便发出原始波形。科技 Crash Course We can take a sentence of text, and break it down into its phonetic components, and then play those sounds back to back, out of a computer speaker. 我们可以把一个文本句子分解成语音成分，然后用电脑扬声器连续播放这些声音。超级大国的兴衰 Because this course, rise and fall of super powers, is delivered via CD ROM you will get to know me primarily as a disembodied voice coming out of your computer speakers for which I apologize. 由于大国沉浮这门课是通过，光盘形式发行的我很抱歉，大家只能通过电脑屏幕中的形象和声音认识我了。英语百科 Computer speaker （重定向自Computer speakers） Not to be confused with PC speaker. Computer speakers, or multimedia speakers, are speakers sold for use with computers, although usually capable of other audio uses, e.g. for an MP3 player. Most such speakers have an internal amplifier, and consequently require a power source, which may be by a mains power supply often via an AC adapter, batteries, or a USB port (able to supply no more than 2.5W DC, 500mA at 5V). The signal input connector is often a 3.5 mm jack plug (usually color-coded lime green per the PC 99 standard); RCA connectors are sometimes used, and a USB port may supply both signal and power (requiring additional circuitry, and only suitable for use with a computer). Battery-powered wireless Bluetooth speakers require no connections at all. Most computers have speakers of low power and quality built in; when external speakers are connected they disable the built-in speakers. Altec Lansing claims to have created the computer speaker market in 1990.
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