Update README.md

README.md

@@ -4,3 +4,47 @@ This is a Javascript playground for experimenting with synthesizing call-like si
 The overall plan is to synthesize 'click-like' signals at a high sampling rate (1 million samples per second).
 Then, lowpass filter and resample to our 'normal' orcasound sampling rate range (< 48 kilo samples per second))
 And, listen to the synthesized signal and observe the power spectral density and a spectrogram of the synthesized signal.
+
+This page is being served via Github Pages.  To run locally, clone the repository and then open a terminal window in your local directory and run a local server from there.
+
+Under Ubuntu: python3 -m http.server --bind 127.0.0.1 9000
+
+Find your program locally at: http://127.0.0.1:9000/index.html
+
+The program is designed as a pipeline which can be entered at a variety of points.  After entry, the pipeline continues to the end.
+The Javascript is mostly in the HTML file and is more-or-less in the order of the pipeline calls.
+
+    function runPipeline(iStart){
+                if (iStart === 0) {
+                    msg.innerHTML = "Calculating clicks ...";
+                    buildClicks();
+                    plotClicks();
+                    msg.innerHTML = "";
+                }
+                if (iStart <= 1){
+                    msg.innerHTML = "Calculating call ...";
+                    buildCall();
+                //    plotCall();
+                    msg.innerHTML = "";
+                }
+                if (iStart <= 2){
+                    msg.innerHTML = "Resampling call ...";
+                    window.global_audioSamplerate = parseInt(document.getElementById('Audio samplerate').value);
+                    resampleCall();
+                    msg.innerHTML = "";
+                }
+                if (iStart <= 3){
+                    msg.innerHTML = "Plotting call ...";
+                    plotCall();
+                    plotResampledCall();
+                    msg.innerHTML = "";
+                }
+                if (iStart <= 4){
+                    msg.innerHTML = "Plotting spectrogram ...";
+                    plotSpectrogram();
+                    msg.innerHTML = "";
+                }
+
+            }
+Currently, the screen does NOT update via the msg.innerHTML statement.  This is an Issue!
+There are more, as well.  Check the Github Issues.

index.html

@@ -256,7 +256,7 @@
             if (doSinAmpMod) { // apply sin envelope to the call
                 for (n = 0; n < global_yAmpCall.length; n += 1) {
                     if ((n > 0.1 * global_yAmpCall.length) && (n < 0.9 * global_yAmpCall.length)) {
-                        var amp = Math.sin(Math.PI * (n - 0.1 * global_yAmpCall.length) / (2*lenCall));
+                        var amp = Math.sin(Math.PI * (n - 0.1 * global_yAmpCall.length) / (lenCall/2));
                         global_yAmpCall[n] *= amp+Math.random()/10;
                     } else {
                         global_yAmpCall[n] = Math.random()/10;