S
scoot
Guest
good self-explanitory item for newbies .
What is MP3?
MP3 is short for MPEG (Motion Picture Experts Group) 1 Audio Layer 3. This compression scheme can reduce a standard ".wav" computer audio file to about 10% of the original file. We took the WAV file which was over 48 megabytes and reduced it to a little less than 4.4 megabytes, keeping the sound at near CD quality.
This type of compression enables anyone with a normal Internet connection to download high quality songs in a reasonable amount of time. With a 56K modem I’m able to download this 4.4MB file in about xx minutes. All that is required to record to MP3 is the original digital file itself (.WAV file, for instance) and a MP3 converter.
The data on a CD uses an uncompressed, high-resolution format. Specifically here's what happens to create a CD: Music is sampled 44,100 times per second The samples are 2 bytes (16 bits) long Separate samples are taken for both the left and right speakers in a stereo system Therefore a CD stores a huge number of bits for each second of music: 44,100 samples/second * 16 bits/sample * 2 channels = 1,411,200 bits per second 1.4 million bits per second is 176,000 bytes per second.
If an average song is 3 minutes long, then the average song on a CD consumes about 32 million bytes of space. 32 Mbytes is a lot of space for one song, and it is especially large when you consider the bandwidth most people have available for their Internet connections. Over a 56 kbit modem it would take something close to 2 hours to download one song.
#
The Name MPEG is the acronym for Moving Picture Experts Group. This group has developed compression systems used for video data. For example, DVD movies use MPEG compression to fit video and movie data into smaller spaces. The MPEG compression system includes a subsystem to compress sound, called MPEG audio Layer-3. We know it by as MP3.
The MP3 format is a compression system for music. The MP3 format helps reduce the number of bytes in a song without hurting the quality of the song's sound. The goal of the MP3 format is to compress a CD-quality song by a factor of 10 to 14 without losing the CD quality of the sound.
With MP3, a 32 megabyte song on a CD compresses down to 3 megabytes. This lets you download a song in minutes rather than hours, and it lets you store hundreds of songs on your computer's hard disk without taking up that much space.
The MP3 movement - consisting of the MP3 format and the Web to advertise and distribute MP3 files -- has done several things for music: It has made it easy for anyone to distribute music at nearly no cost, It has made it easy for anyone to find music and access it instantly and It has taught people a great deal about manipulating sound on a computer, that third one was accidental but important.
A big part of the MP3 movement is the fact that it has brought an incredible array of powerful tools to desktop computers and given people a reason to learn how they work. Because of these tools it is now extremely easy for you to: download an MP3 file from a web site and play it rip a song from a music CD and play it directly or encode it as an MP3 file record a song yourself,
convert it to an MP3 file and make it available to the world convert MP3 files into CD files and create your own audio CDs from MP3 files on the web rip songs off of various music CDs and recombine them into your own custom CDs store hundreds of MP3 files on data CDs load MP3 files into tiny portable players and listen to them wherever you go,
To do all of these things all that you need is a computer with a sound card and speakers, an Internet connection, a CD-R drive to create CDs and an MP3 player.
regards scoot
What is MP3?
MP3 is short for MPEG (Motion Picture Experts Group) 1 Audio Layer 3. This compression scheme can reduce a standard ".wav" computer audio file to about 10% of the original file. We took the WAV file which was over 48 megabytes and reduced it to a little less than 4.4 megabytes, keeping the sound at near CD quality.
This type of compression enables anyone with a normal Internet connection to download high quality songs in a reasonable amount of time. With a 56K modem I’m able to download this 4.4MB file in about xx minutes. All that is required to record to MP3 is the original digital file itself (.WAV file, for instance) and a MP3 converter.
The data on a CD uses an uncompressed, high-resolution format. Specifically here's what happens to create a CD: Music is sampled 44,100 times per second The samples are 2 bytes (16 bits) long Separate samples are taken for both the left and right speakers in a stereo system Therefore a CD stores a huge number of bits for each second of music: 44,100 samples/second * 16 bits/sample * 2 channels = 1,411,200 bits per second 1.4 million bits per second is 176,000 bytes per second.
If an average song is 3 minutes long, then the average song on a CD consumes about 32 million bytes of space. 32 Mbytes is a lot of space for one song, and it is especially large when you consider the bandwidth most people have available for their Internet connections. Over a 56 kbit modem it would take something close to 2 hours to download one song.
#
The Name MPEG is the acronym for Moving Picture Experts Group. This group has developed compression systems used for video data. For example, DVD movies use MPEG compression to fit video and movie data into smaller spaces. The MPEG compression system includes a subsystem to compress sound, called MPEG audio Layer-3. We know it by as MP3.
The MP3 format is a compression system for music. The MP3 format helps reduce the number of bytes in a song without hurting the quality of the song's sound. The goal of the MP3 format is to compress a CD-quality song by a factor of 10 to 14 without losing the CD quality of the sound.
With MP3, a 32 megabyte song on a CD compresses down to 3 megabytes. This lets you download a song in minutes rather than hours, and it lets you store hundreds of songs on your computer's hard disk without taking up that much space.
The MP3 movement - consisting of the MP3 format and the Web to advertise and distribute MP3 files -- has done several things for music: It has made it easy for anyone to distribute music at nearly no cost, It has made it easy for anyone to find music and access it instantly and It has taught people a great deal about manipulating sound on a computer, that third one was accidental but important.
A big part of the MP3 movement is the fact that it has brought an incredible array of powerful tools to desktop computers and given people a reason to learn how they work. Because of these tools it is now extremely easy for you to: download an MP3 file from a web site and play it rip a song from a music CD and play it directly or encode it as an MP3 file record a song yourself,
convert it to an MP3 file and make it available to the world convert MP3 files into CD files and create your own audio CDs from MP3 files on the web rip songs off of various music CDs and recombine them into your own custom CDs store hundreds of MP3 files on data CDs load MP3 files into tiny portable players and listen to them wherever you go,
To do all of these things all that you need is a computer with a sound card and speakers, an Internet connection, a CD-R drive to create CDs and an MP3 player.
regards scoot
