Description Usage Arguments Details Value References See Also
Estimate a (single) ridge from a time-frequency representation, using the ICM minimization method.
1 2 |
modulus |
Time-Frequency representation (real valued). |
guess |
Initial guess for the algorithm. |
tfspec |
Estimate for the contribution of the noise to modulus. |
subrate |
Subsampling rate for ridge estimation. |
mu |
Coefficient of the ridge's second derivative in cost function. |
lambda |
Coefficient of the ridge's derivative in cost function. |
iteration |
Maximal number of moves. |
To accelerate convergence, it is useful to preprocess modulus before
running annealing method. Such a preprocessing (smoothing and
subsampling of modulus) is implemented in icm
. The
parameter subrate specifies the subsampling rate.
Returns the estimated ridge and the cost function.
ridge |
1D array (of same length as the signal) containing the ridge. |
cost |
1D array containing the cost function. |
See discussions in the text of “Practical Time-Frequency Analysis”.
corona
, coronoid
, and snake
,
snakoid
.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.