音頻檔案大小 Audio file size

取樣頻率(每秒) sampling frequency(rate)：	kHz (per second) `human 11 kHz, AM radio 22 kHz, CD 44.1 kHz`
位元深度 bit depth(sampling size)：	bit 位元 `human/radio 8-bit, CD 16-bit`
聲道 channel：
位元率 bitrate：	bits/sec (bps)
長度 length of recording：	sec
檔案大小 file size：	bits
	MBytes

bitrate = freq * depth * channel 
CD = 44100 * 16 * 2
   = 1,411,200 bits per second
   = 1.4   Mbps
   = 0.175 MBps

CD 16-bit/44.1 kHz
Telephone 12-bit/8 kHz

Audio Bit Rate and File Size Calculator:
theaudioarchive.com 、omnicalculator.com 、pamaproaudio.com

color-depth 、image-size 、audio-size 、video-size

模擬轉數碼 Analog to Digital