http://www.k-wave.org/forum/topic/envelope-detect Support for the k-Wave MATLAB toolbox en-US Tue, 12 May 2026 23:32:28 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/envelope-detect#post-1110 Tue, 11 Dec 2012 13:43:35 +0000 Pavel 1110@http://www.k-wave.org/forum/ <p>If you try to extract envelope of PA signal, you may also like the following matlab expression: </p> <p>signal=abs(hilbert(signal(:)));</p> <p>Pavel </p> http://www.k-wave.org/forum/topic/envelope-detect#post-1101 Thu, 06 Dec 2012 07:17:15 +0000 Bradley Treeby 1101@http://www.k-wave.org/forum/ <p>Do the values of your signal fluctuate about zero? If not, try shifting the values using something like:</p> <p> <code>signal = signal - mean(signal(:));</code></p> <p>Brad. </p> http://www.k-wave.org/forum/topic/envelope-detect#post-1091 Sun, 02 Dec 2012 15:22:03 +0000 Nashmil 1091@http://www.k-wave.org/forum/ <p>Hi there,<br /> I would like to use "envelopedetction" function to detect envelope of a echo signal that I got from a probe.<br /> when I use this function, the envelope just follow the RF signal and almost repeat the signal. I tried to change the parameters in the function but I didn't give the correct answer.<br /> I should detect the envelope to have an image of the in front of the probe, I would be grateful if anyone can help me.</p> <p>Thanks in advance </p>