Route Wav files through ffmpeg, ditched:

getWavePredictBuffers
lookForHeader
processPredictQueue
setupCTX

And waveFileReader package

index.html

@@ -320,6 +320,7 @@ <h5 class="offcanvas-title" id="offcanvasExampleLabel">Settings</h5>
                             </div>
                         </div>
                     </div>
+                    <hr>
                     <div class="form-group rounded p-2 mb-2">
                         <div class="col form-check form-switch">
                             <label class="form-check-label" for="normalise">Normalise Audio:
@@ -328,9 +329,10 @@ <h5 class="offcanvas-title" id="offcanvasExampleLabel">Settings</h5>
                             <a class="circle" tabindex="-1" data-bs-toggle="popover" data-bs-trigger="focus" data-bs-title="Normalise" id="Normalise-circle-help"  data-bs-content="When enabled, the audio you hear will be normalised, expanding the dynamic range.">?</a>
                         </div>
                     </div>
+                    <hr>
                     <div class="me-auto">
                         <div class="form-group rounded p-2 mb-2">
-                            <a class="circle" tabindex="-1" data-bs-toggle="popover" data-bs-trigger="focus" data-bs-title="High Pass Filter" id="High Pass Filter-circle-help"  data-bs-content="When set, removes low frequency noise below the threshold. If enabled before analysis, the modified audio is sent to the model. If only enabled after analysis, this just affects audio playback">?</a>
+                            <a class="circle" tabindex="-1" data-bs-toggle="popover" data-bs-trigger="focus" data-bs-title="High Pass Filter" id="High Pass Filter-circle-help"  data-bs-content="When set, removes low frequency noise below the threshold.">?</a>
                             <label for="HighPassFrequency" class="form-label">
                                 High Pass filter:
                             </label>
@@ -342,11 +344,11 @@ <h5 class="offcanvas-title" id="offcanvasExampleLabel">Settings</h5>
                             </div>
                         </div>
                     </div>
+                    <hr>
+                    <h6>Low Shelf filter</h6>
                     <div class="form-group rounded p-2 me-0 mb-2">
-                        <a class="circle" tabindex="-1" data-bs-toggle="popover" data-bs-trigger="focus" data-bs-title="Low Shelf Filter" id="Low Shelf Filter-circle-help"  data-bs-content="When used, attenuates low frequency noise below the frequency threshold. If enabled before analysis, the modified audio is sent to the model. If only enabled after analysis, this just affects audio playback">?</a>
-                        <label for="lowShelfFrequency" class="form-label">
-                            Low Shelf filter:
-                        </label>
+                        <a class="circle" tabindex="-1" data-bs-toggle="popover" data-bs-trigger="focus" data-bs-title="Low Shelf Filter" id="Low Shelf Filter-circle-help"  data-bs-content="When used, attenuates low frequency noise below the cut-off frequency.">?</a>
+                        <label for="lowShelfFrequency" class="form-label">Cut-off Frequency:</label>
                         <div class="input-group me-0 p-0">
                             <input type="range" class="form-control-range w-75" min="0" max="2500" step="100" id="lowShelfFrequency">
                             <div class="input-group-append">