As we are approaching the 21st century communications is becoming a vital key in business and home computing. As a result we are constantly inventing new ways in order to make communications easier for the user to access in our daily lives. Therefore the information superhighway has sparred awareness in home technology or lack of home technology. The abbreviation MP3 stands for MPEG (Moving Picture Experts Group) layer 3, which is a standard format for storing compressed music. An MP3 file is an audio file that has been compressed (anywhere from 1/5th to 1/17th of its original size) without any noticeable loss in sound quality. That means a great sounding file, in a package small enough that it can be downloaded and/or stored on your PC (MP3 files can be identified by their file extension, .mp
  3.). The basic idea is that music digitized at CD quality has information that can be suppressed with little or no quality loss, as perceived by most people. Thanks to this and some mathematics, it is possible to compress a digitized track to about 8 percent of its original size, or a compression ratio of 12:
  1. This means that, while a regular music CD can contain about one hour of music (74 minutes, actually), a similar CD used to store mp3 files can contain almost 12 hours of music. MP3 is used particularly for music distribution over the Internet, but is also used for other purposes such as real-time digital audio transmissions over ISDN (used by reporters). How is it possible to do this you ask? Well, I won't get into the technical details, but basically the MP3 encoder removes the parts of the sound not audible to the human ear. This means that MP3 is a 'loss' type of compression (comparable to JPEG in the graphics area). This means that what comes out from your CD or Wave file is NOT the same thing that comes out of the MP3 that has been created from the CD/Wav. The sound data that has been lost will not be returned if the MP3 is decoded back to WAV. However, CDs and .wav files are troublesome when the Internet gets involved. Songs or sound files in .wav form can take up a lot of memory, depending on the length of the recording. If you make a five-second, low quality happy birthday! .wav message using the Sound Recorder program mentioned above, it will probably take up just 20 or 30 KB of memory small enough to attach to an e-mail message and send it off to your mom. But a three-minute, CD-quality song in .wav form will take up 30 MB (that's M, as in Megabytes) of memory. A file that size not only occupies more space than most programs on your computer, but would take over six hours to upload and send it as an email attachment to your mom using a normal modem. That's if your e-mail account even lets you send an attachment that big! This is where mp3 comes in. Certain programs such as MusicMatch can compress sound files to the much smaller .mp3 format. MusicMatch and other programs can uncompress .mp3 files and play them back through your PC's speakers without sacrificing audio quality. The program is designed so that you don't have to really think about compressing/uncompressing computer files, it's just a matter of pressing record or play on the screen! Another way to look at mp3s: Imagine squeezing a foam ball and putting it in your pocket that's what compressing (or recording)
a song into an mp3 file is like. Taking the ball out of your pocket and letting it pop back into its original form is the equivalent of uncompressing (or playing) an mp3 file. A typical 3-minute long, CD-quality song in mp3 format takes up about 3 MB of space. Bibliography As we are approaching the 21st century communications is becoming a vital key in business and home computing. As a result we are constantly inventing new ways in order to make communications easier for the user to access in our daily lives. Therefore the information superhighway has sparred awareness in home technology or lack of home technology. The abbreviation MP3 stands for MPEG (Moving Picture Experts Group) layer 3, which is a standard format for storing compressed music. An MP3 file is an audio file that has been compressed (anywhere from 1/5th to 1/17th of its original size) without any noticeable loss in sound quality. That means a great sounding file, in a package small enough that it can be downloaded and/or stored on your PC (MP3 files can be identified by their file extension, .mp
  3.). The basic idea is that music digitized at CD quality has information that can be suppressed with little or no quality loss, as perceived by most people. Thanks to this and some mathematics, it is possible to compress a digitized track to about 8 percent of its original size, or a compression ratio of 12:
  1. This means that, while a regular music CD can contain about one hour of music (74 minutes, actually), a similar CD used to store mp3 files can contain almost 12 hours of music. MP3 is used particularly for music distribution over the Internet, but is also used for other purposes such as real-time digital audio transmissions over ISDN (used by reporters). How is it possible to do this you ask? Well, I won't get into the technical details, but basically the MP3 encoder removes the parts of the sound not audible to the human ear. This means that MP3 is a 'loss' type of compression (comparable to JPEG in the graphics area). This means that what comes out from your CD or Wave file is NOT the same thing that comes out of the MP3 that has been created from the CD/Wav. The sound data that has been lost will not be returned if the MP3 is decoded back to WAV. However, CDs and .wav files are troublesome when the Internet gets involved. Songs or sound files in .wav form can take up a lot of memory, depending on the length of the recording. If you make a five-second, low quality happy birthday! .wav message using the Sound Recorder program mentioned above, it will probably take up just 20 or 30 KB of memory small enough to attach to an e-mail message and send it off to your mom. But a three-minute, CD-quality song in .wav form will take up 30 MB (that's M, as in Megabytes) of memory. A file that size not only occupies more space than most programs on your computer, but would take over six hours to upload and send it as an email attachment to your mom using a normal modem. That's if your e-mail account even lets you send an attachment that big! This is where mp3 comes in. Certain programs such as MusicMatch can compress sound files to the much smaller .mp3 format. MusicMatch and other programs can uncompress .mp3 files and play them back through your PC's speakers without sacrificing audio quality. The
program is designed so that you don't have to really think about compressing/uncompressing computer files, it's just a matter of pressing record or play on the screen! Another way to look at mp3s: Imagine squeezing a foam ball and putting it in your pocket that's what compressing (or recording) a song into an mp3 file is like. Taking the ball out of your pocket and letting it pop back into its original form is the equivalent of uncompressing (or playing) an mp3 file. A typical 3-minute long, CD-quality song in mp3 format takes up about 3 MB of space. Word Count: 643
由于我们正在接近 21 世纪的通信正在成为重要的商业和家庭计算的关键。 因此, 我们正在不断创造新的途径,以便使通信更容易为用户访问我们的日常生活。因 此,信息高速公路已经在家里对打技术或家庭技术缺乏认识。缩写的 MP3 代表 的 MPEG(运动图像专家组)第 3 层,这是一个用于存储压缩音乐的标准格式。 一个 MP3 文件是一个音频文件已被压缩(少则 1/5th 到其原始大小 1/17th)没 有任何明显的音质损失。 也就是说, 在一个小得足以一个伟大的冠冕堂皇的文件, 它可以下载和/或您的电脑 (MP3 文件可以通过它们的文件扩展名。 MP3 播放。 ) 存储。其基本思路是在数字化的音乐 CD 音质有资料可与很少或没有质量损失, 大多数人认为,抑制。这和一些数学谢谢,这是可能的压缩数字化轨道百分之八 左右,其原始大小,或 12 时 01 分压缩比。这意味着,而普通的音乐光盘可以 包含大约一小时的音乐(74 分钟,实际上),一个类似的光盘,用于存储 MP3 文件可以包含近 12 小时的音乐。特别是用于 MP3 播放音乐在互联网上的分布, 但也适用于其他用途,如实时数字音频通过 ISDN 传输(记者使用)。怎么可能 做到这一点,你问?好吧,我不会进入技术细节,但基本上消除了 MP3 编码器 不发声的声音对人耳的部分。这意味着,MP3 是一种'损失'的压缩(类似在图形 面积为 JPEG)类型。这意味着什么出来,从您的 CD 或波形文件是不一样的东 西出来的已经从 CD / wav 等创建的 MP
  3。的声音数据已经丢失将不予退还如果 MP3 解码回 WAV 格式。但是,CD 和。wav 文件的麻烦上网的时候来凑热闹。 歌曲或声音文件英寸 wav 格式可以占用大量的内存,这取决于录制的长度。如
果你把一个五秒钟, 低质量生日快乐! wav 邮件使用录音机程序上面提到的, 的。 它可能会占用的内存足够小,附加到电子邮件消息,并把它送上你的妈妈只有 20 或 30 千字节。但三分钟,CD 质量的民俗文化现象。wav 格式会占用 30 MB 的(即公司的 M,如兆字节)的内存。一个文件的大小不仅面积超过大多数程序 在计算机上的空间, 但会超过 6 小时采取的上传和发送电子邮件附件使用普通调 制解调器你妈妈了。这是如果你的 e - mail 帐号甚至可以让您发送的附件大!这 是 MP3 播放的用武之地, 如某些程序可以压缩的 MusicMatch 声音文件小得多。 MP3 格式。的 MusicMatch 和其他程序可以解压缩。MP3 文件和播放通过 PC 的扬声器回不牺牲音频质量。该方案的设计,使你没有真正考虑压缩/解压的计 算机文件,它只是一个紧迫的问题或播放记录在屏幕上!另一种方式来看待的 MP
  3:想象挤泡沫球放进一个 MP3 文件中在你的口袋里这就是压缩(或录音) 一首歌曲是怎样的。以你的口袋里了,而是让球弹出后到其原来的形式是解压缩 (或播放)相当于一个 MP3 文件。一个典型的三分钟长,CD 质量的 MP3 格式 的歌曲占地约 3 MB 的空间。书目由于我们正在接近 21 世纪的通信正在成为重 要的商业和家庭计算的关键。因此,我们正在不断创造新的途径,以便使通信更 容易为用户访问我们的日常生活。因此,信息高速公路已经在家里对打技术或家 庭技术缺乏认识。缩写的 MP3 代表的 MPEG(运动图像专家组)第 3 层,这是 (少 一个用于存储压缩音乐的标准格式。 一个 MP3 文件是一个音频文件已被压缩 则 1/5th 到其原始大小 1/17th)没有任何明显的音质损失。也就是说,在一个小 得足以一个伟大的冠冕堂皇的文件,它可以下载和/或您的电脑(MP3 文件可以 通过它们的文件扩展名。MP3 播放。)存储。其基本思路是在数字化的音乐 CD 音质有资料可与很少或没有质量损失, 大多数人认为, 抑制。 这和一些数学谢谢, 这是可能的压缩数字化轨道百分之八左右,其原始大小,或 12 时 01 分压缩比。 这意味着,而普通的音乐光盘可以包含大约一小时的音乐(74 分钟,实际上), 一个类似的光盘,用于存储 MP3 文件可以包含近 12 小时的音乐。特别是用于 MP3 播放音乐在互联网上的分布,但也适用于其他用途,如实时数字音频通过 ISDN 传输(记者使用)。怎么可能做到这一点,你问?好吧,我不会进入技术 这意味着, MP3 细节, 但基本上消除了 MP3 编码器不发声的声音对人耳的部分。 是一种'损失'的压缩(类似在图形面积为 JPEG)类型。这意味着什么出来,从 您的 CD 或波形文件是不一样的东西出来的已经从 CD / wav 等创建的 MP
  3。的 声音数据已经丢失将不予退还如果 MP3 解码回 WAV 格式。但是,CD 和。wav 文件的麻烦上网的时候来凑热闹。歌曲或声音文件英寸 wav 格式可以占用大量 的内存,这取决于录制的长度。如果你把一个五秒钟,低质量生日快乐!的。 wav 邮件使用录音机程序上面提到的, 它可能会占用的内存足够小, 附加到电子 邮件消息,并把它送上你的妈妈只有 20 或 30 千字节。但三分钟,CD 质量的民 俗文化现象。wav 格式会占用 30 MB 的(即公司的 M,如兆字节)的内存。一 个文件的大小不仅面积超过大多数程序在计算机上的空间, 但会超过 6 小时采取 的上传和发送电子邮件附件使用普通调制解调器你妈妈了。这是如果你的 e mail 帐号甚至可以让您发送的附件大!这是 MP3 播放的用武之地,如某些程序 可以压缩的 MusicMatch 声音文件小得多。MP3 格式。的 MusicMatch 和其他程 序可以解压缩。MP3 文件和播放通过 PC 的扬声器回不牺牲音频质量。该方案 的设计,使你没有真正考虑压缩/解压的计算机文件,它只是一个紧迫的问题或 播放记录在屏幕上!另一
 

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