sfsnr2 computes the signal-to-noise (SNR) ratio in decibells.

The following example from tccs/intshape/fsyn uses the SNR computation to compare the convergence of two different methods.

SNR is computed according to the equation

$SNR={\displaystyle 10{\log }_{10}\left(\frac{\Vert \mathbf{s}{\Vert }_2^2}{\Vert \mathbf{n}{\Vert }_2^2}\right)}$

The signal vector $\mathbf{s}$ is in the standard input, the noise vector $\mathbf{n}$ is in the file specified by noise= parameter.

10 previous programs of the month:

• sflpf
• sfslice
• sfzomig3
• sfseislet
• sfmig2
• sfsort
• sfdivn
• sfpldb and sfplas
• sfisolr2
• sfsimilarity