custom recorder processor doc

README.md

@@ -153,7 +153,30 @@ let options = {
   frameLength: 512,
   outputSampleRate: 16000,
   deviceId: null,
-  filterOrder: 50
+  filterOrder: 50,
+};
+
+WebVoiceProcessor.setOptions(options);
+```
+
+### Custom Recorder Processor
+
+**NOTE**: We won't be responsible for any bugs related to using custom-made recorder processor.
+
+Take a look at [recorder_processor.js](src/audio_worklet/recorder_processor.js) in this repo as a reference
+on how to create a simple recorder processor. 
+
+Add the option `customRecorderProcessorURL` to options object to use your own recorder processor.
+Enter the string to the custom recorder processor URL or leave it blank to use the default recorder processor.
+
+```javascript
+// Override default options
+let options = {
+  frameLength: 512,
+  outputSampleRate: 16000,
+  deviceId: null,
+  filterOrder: 50,
+  customRecorderProcessorURL: "${URL_PATH_TO_RECORDER_PROCESSOR}"
 };
 
 WebVoiceProcessor.setOptions(options);