1. An automated speech processing method comprising: using a speech-to-text (STT) engine for receiving an audio input and for converting the audio input to text data in a source language; using a machine translation (MT) engine for receiving the text data from the STT engine and for translating the text data to text data in a target language; using a caption engine for rendering the text data in the target language on a display device; and applying different visualization schemes to different parts of the rendered text data based on defined characteristics of the STT engine and the MT engine.