Digital Sampling

The Music Telegraph | Text 2019/02/01 [15:48]

Digital Sampling

The Music Telegraph| 입력 : 2019/02/01 [15:48]

▲ Digital Sampling    

© DaleMultimedia.com



 

Digital Sampling

 

 

▲ Analog | Digital

© DaleMultimedia.com



 

The quality of digital audio can vary depending on 3 quality factors: 

1. Sample Rate ==> e.g. 22.05 kHz, 44.1 kHz, ...

2. Sample Size (Bit depth, a.k.a. Resolution) ==>  e.g. 8 bit, 16 bit, ... 

3. Number of Channels (Stereo/Mono) ==> e.g. 2 Ch Stereo, 1 Ch Mono, ...

 

 

11.025 kHz (11,025 samples per second) ==> AM radio

22.05 kHz (22,050 samples per second) ==> FM radio

44.1 kHz (44,100 samples per second) ==> Compact Disk (CD)

 

 

 

Sample Rate Sample Size Stereo/Mono File size for 1 minute Quality
48 kHz 16 bit Stereo 11.4 Mb DAT Professional High quality
44.1 kHz 16 bit Stereo 10.5 Mb CD Standard audio quality
22.05 kHz 16 bit Stereo 5.25 Mb FM Radio
22.05 kHz 16 bit Mono 2.5 Mb Multimedia Presentation
11.025 kHz 8 bit Mono 650K AM Radio
5.51 kHz 8 bit Mono 325K Telephone

 

 

*Excerpts from © DaleMultimedia.com (http://www.dalemultimedia.com/cv_root/note_aud/audio.htm)*

 

 

 

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