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Sampling rates higher than about 50 kHz to 60 kHz cannot supply more usable information for human listeners. Early professional audio equipment manufacturers chose sampling rates in the region of 40 to 50 kHz for this reason.
Audio on Compact Disc has a sampling rate of 44.1 kHz; to transfer it to a digital medium that uses 48 kHz, method 1 above can be used with L = 160, M = 147 (since 48000/44100 = 160/147). [5] For the reverse conversion, the values of L and M are swapped.
Common sampling rate of luma+chroma video components in the Multiplexed Analogue Components standard. Pixel clock for SDTV PAL/NTSC (544×480p@59.94, 544×576p@50). 20.2752 115200 UART clock allows integer division to common baud rates up to 115,200(×16×11) or 230,400(×8×11). 20.480 256000 Allows binary division to 10 kHz (2 11 ×10 kHz ...
When is normalized with reference to the sampling rate as ′ =, the normalized Nyquist angular frequency is π radians/sample. The following table shows examples of normalized frequency for f = 1 {\displaystyle f=1} kHz , f s = 44100 {\displaystyle f_{s}=44100} samples/second (often denoted by 44.1 kHz ), and 4 normalization conventions:
In the early 1980s, a 32 kHz sampling rate was used in broadcast (esp. in UK and Japan), because this is sufficient for FM stereo broadcasts, which have 15 kHz bandwidth. Some digital audio was provided for domestic use in two incompatible EIAJ formats, corresponding to 525/59.94 (44,056 Hz sampling) and 625/50 (44.1 kHz sampling).
One of the possible reasons is to reduce the Nyquist rate for more efficient storage. And it turns out that one can directly achieve the same result by sampling the bandpass function at a sub-Nyquist sample-rate that is the smallest integer-sub-multiple of frequency A that meets the baseband Nyquist criterion: f s > 2B.
The bandwidth allocated for a single voice-frequency transmission channel is usually 4 kHz, including guard bands, [2] allowing a sampling rate of 8 kHz to be used as the basis of the pulse-code modulation system used for the digital PSTN.
4.186 kHz: Acoustic – the highest musical note (C 8) playable on a normally-tuned standard piano 8 kHz: ISDN sampling rate 10 4: 10 kHz 14 kHz: Acoustic – the typical upper limit of adult human hearing 17.4 kHz: Acoustic – a frequency known as the Mosquito, which is generally only audible to those under the age of 24. 25.1 kHz