Add larger FFT size options

web/index.html

@@ -54,6 +54,9 @@
             <option value="2048">2048</option>
             <option value="4096">4096</option>
             <option value="8192">8192</option>
+            <option value="16384">16384</option>
+            <option value="32768">32768</option>
+            <option value="65536">65536</option>
           </select>
         </div>