This code shows two examples of communicating to a remote Vosk server using a microphone in javascript.
One example is using the latest Audio Worklet API, the other example is using a deprecated Script Processor Node.
Audio Worklet has replaced a deprecated ScriptProcessorNode. One issue with the new AudioWorkletProcessor, is that it only runs over https (see this doc). In order to test it, one must run it on a secure server and streaming over to another (Vosk) secure server. It should work in local environment if a localhost Vosk is running, but it won't work with a remote server over plain http.
Now deprecated ScriptProcessorNode is added as another example (voice_client_with_script_processor.js), so it is possible to still use ScriptProcessorNode instead, which will communicate over plain http.
A pair of listen/stop listening buttons is added in the html to compare the two solutions.