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signal to noise (STN)

Signal to Noise (STN) is the ratio between the signal level and the level of the interfering signals. The interfering signal can be noise or hum, which can be caused by crosstalk, irradiation of mains voltages, of pulses, etc.

Quantization error and interference voltage spacing at different quantization levels

Quantization error and interference voltage spacing at different quantization levels

The signal-to-noise ratio, expressed in decibels( dB), applies equally to voice, audio and video and is a measure of the transmission quality of communications systems.

Analog audio has a signal-to-noise ratio of about 60 dB; for digital audio, the signal-to-noise ratio depends on the level of quantization and is about 100 dB at 16 bits. In communication systems, the error rate and transmission range depend directly on the signal-to-noise ratio.

Informations:
Englisch: signal to noise - STN
Updated at: 23.01.2006
#Words: 114
Links: super twisted nematic (display) (STN), signal, level, noise (N), crosstalk (XT)
Translations: DE
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