A speech aid system includes a tube (2) for mounting at a tracheostomy (901) of a user (900), a voice parameter acquiring device (4) mounted to the tube (2) and generating a voice parameter signal according to airflow applied within the tube (2) resulting from attempt by the user (900) to speak, a processor (5) generating an audio signal corresponding to the voice parameter signal, and a sound generator (7) for mounting in an oral cavity (902) of the user (900). The sound generator (7) produces a substitute glottal sound corresponding to the audio signal.
