MPEG-1 or MPEG-2 Audio Layer III, more commonly referred to as MP3, is an audio coding format for digital audio which uses a form of lossy data compression. It is a common audio format for consumer audio streaming or storage, as well as a de facto standard of digital audio compression for the transfer and playback of music on most digital audio players. 

The use of lossy compression is designed to greatly reduce the amount of data required to represent the audio recording and still sound like a faithful reproduction of the original uncompressed audio for most listeners. An MP3 file that is created using the setting of 128 kbit/s will result in a file that is about 1/11 the size of the CD file created from the original audio source (44,100 samples per second × 16 bits per sample × 2 channels = 1,411,200 bit/s; MP3 compressed at 128 kbit/s: 128,000 bit/s [1 k = 1,000, not 1024, because it is a bit rate]. Ratio: 1,411,200/128,000 = 11.025). An MP3 file can also be constructed at higher or lower bit rates, with higher or lower resulting quality. QUESTIONS:

Q1:
1. Is MP3 often use?
2. Are MP3's easily found?
3. 
Q2:
1. What is MP3 used for?
2. What is the purpose of MP3?
3. 
Q3:
1. How is MP3 officially referred to?
2. What is the full name for MP3?
3. 
Q4:
1. Is MP3 used for analog audio?
2. Is analog audio an aspect of MP3?
3. 
Q5:
1. What does compression do?
2. What is the reason for compressing a file?
3. 
Q6:
1. Should an MP3 file sound different?
2. Is MP3 supposed to change the sound of a file?
3. 
Q7:
1. How much tinier is an MP3 file than a CD?
2. How does the smaller MP3 file compare to a CD in size?
3. 
Q8:
1. Can an MP3 file be smaller than 1/11 the size of a CD?
2. Do MP3s come in formats even tinier than 1/11 the size of a CD?
3. 
Q9:
1. What happens when MP3 files are shrunk even more?
2. What happens when one decreases the size of MP3 files?
3. 
Q10:
1. What happens when one increases the size of an MP3 file?
2. What do bigger MP3 files result in?
3. 
