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- Signal-to-quantization-noise_ratio abstract "Signal-to-Quantization-Noise Ratio (SQNR or SNqR) is widely used quality measure in analysing digitizing schemes such as PCM (pulse code modulation) and multimedia codecs. The SQNR reflects the relationship between the maximum nominal signal strength and the quantization error (also known as quantization noise) introduced in the analog-to-digital conversion.The SQNR formula is derived from the general SNR (Signal-to-Noise Ratio) formula for the binary pulse-code modulated communication channel:whereis the probability of received bit erroris the peak message signal levelis the mean message signal levelAs SQNR applies to quantized signals, the formulae for SQNR refer to discrete-time digital signals. Instead of , we will use the digitized signal . For quantization steps, each sample, requires bits. The probability distribution function (pdf) representing the distribution of values in and can be denoted as . The maximum magnitude value of any is denoted by .As SQNR, like SNR, is a ratio of signal power to some noise power, it can be calculated as:The signal power is:The quantization noise power can be expressed as:Giving:When the SQNR is desired in terms of Decibels (dB), a useful approximation to SQNR is:where is the number of bits in a quantized sample, and is the signal power calculated above. Note that for each bit added to a sample, the SQNR goes up by approximately 6dB .".
- Signal-to-quantization-noise_ratio wikiPageExternalLink signal-to-quantization-noise-in-quantized-sinusoidal.
- Signal-to-quantization-noise_ratio wikiPageID "3321592".
- Signal-to-quantization-noise_ratio wikiPageRevisionID "606200915".
- Signal-to-quantization-noise_ratio hasPhotoCollection Signal-to-quantization-noise_ratio.
- Signal-to-quantization-noise_ratio subject Category:Digital_audio.
- Signal-to-quantization-noise_ratio subject Category:Electronics.
- Signal-to-quantization-noise_ratio subject Category:Engineering_ratios.
- Signal-to-quantization-noise_ratio subject Category:Noise.
- Signal-to-quantization-noise_ratio type Abstraction100002137.
- Signal-to-quantization-noise_ratio type EngineeringRatios.
- Signal-to-quantization-noise_ratio type MagnitudeRelation113815152.
- Signal-to-quantization-noise_ratio type Ratio113819207.
- Signal-to-quantization-noise_ratio type Relation100031921.
- Signal-to-quantization-noise_ratio comment "Signal-to-Quantization-Noise Ratio (SQNR or SNqR) is widely used quality measure in analysing digitizing schemes such as PCM (pulse code modulation) and multimedia codecs.".
- Signal-to-quantization-noise_ratio label "Signal-to-quantization-noise ratio".
- Signal-to-quantization-noise_ratio sameAs m.095px_.
- Signal-to-quantization-noise_ratio sameAs Q7512618.
- Signal-to-quantization-noise_ratio sameAs Q7512618.
- Signal-to-quantization-noise_ratio sameAs Signal-to-quantization-noise_ratio.
- Signal-to-quantization-noise_ratio wasDerivedFrom Signal-to-quantization-noise_ratio?oldid=606200915.
- Signal-to-quantization-noise_ratio isPrimaryTopicOf Signal-to-quantization-noise_ratio.