SQNR

Also found in: Wikipedia.

Acronym	Definition
SQNR	Signal-to-Quantization Noise Ratio

Suggest new definition

References in periodicals archive ?

In order to achieve constant Signal to Quantization Noise Ratio (SQNR) in the wide range of input variances, quasilogarithmic (QL) [mu]-law of compression can be applied

Design of Switched Quantizers and Speech Coding Based on Quasi-Logarithmic Compandor

1 and 2 show SQNR and bit rate R of the adaptive and non-adaptive three-level Lloyd-Max's scalar quantizer, estimated for the supposed Gaussian source in the wide dynamic range of variances |B| = 40 dB (B=[-20 dB, 20 dB]) and L = 32 levels [Q.sub.LU].

Three-Level Delta Modulation with Second-Order Prediction for Gaussian Source Coding

From the simulation results, the radix-2 DIT FFT algorithm has better accuracy in term of Signal-To-Quantization-Noise Ratio (SQNR).

Implementation of efficient CORDIC array structure based fast RADIX-2 DCT algorithm

In order to keep the SQNR of these final results above 80 dB, the valueof Paccmln had to be such that the result after this division would occupy at least 14 bits, giving 86 dB SQNR.

DIGITAL PHASE-SENSITIVE DETECTOR (PSD) AS ACCUMULATOR-SAMPLER AND ITS IMPLEMENTATION IN FPGA

Figure 2 shows the impact of the normalized saturation level [A.sub.M]/[sigma] and the number of quantization m on SQNR. As can be observed, there is an optimum normalized saturation level for each value of m, since the quantizer's saturation becomes too frequent if [A.sub.M]/[sigma] is small and the quantization interval becomes too high when [A.sub.M]/[sigma] is high.

Low-bit rate feedback strategies for iterative IA-precoded MIMO-OFDM-based systems

However, increase of parameter A leads to decrease of maximum SQNR. Optimal values for these parameters are numerically calculated using MATLAB.

Support Region of Semilogarithmic Quantizer for Laplacian Source

2 shows SQNR obtained for the Lloyd-Max quantization with N = 2 and N = 4 levels having bit rates R = 1 bit/sample and R = 2 bit/sample, respectively [2], [3].

Three-level delta modulation for Laplacian source coding

In order to provide the appropriate theoretical analysis in a wide dynamic range of the input variances, we define the distortion and SQNR for the particular variance:

Multilevel Delta Modulation with Switched First-Order Prediction for Wideband Speech Coding

Logarithmic quantizers are robust and especially suitable for application in the case of high variance range of input signals, providing output of approximately constant SQNR [18].

Modified BTC Algorithm for Audio Signal Coding

All support regions [x.sub.max.sup.[gamma]] will influence quantizer's performances, among which for us the most important are: SQNR and the average bit rate [bar.R].

Switched quasi-logarithmic quantizer with Golomb--Rice coding

SQNR for proposed coding scheme is calculated by averaging SQNR value for all frames [7]-[13]

Speech signal coding using forward adaptive quantization and simple transform coding

Following the distortion it can be calculated Signal-to-Quantization-Noise Ratio (SQNR) source

Switched scalar optimal [mu]-law quantization with adaptation performed to both the variance and the distribution of speech signal