Itamar,
Thank you for the answer. The Moodle project I'm working on requires audio recording to assess language proficiency. Thus no simple input field is involved.
In this scenario, highly controlled environment is crucial to standardize testing conditions. For instance, an audio recording is played once (and only once); then the student is allocated a preparation time (typically 20 seconds); finally, the student can record his answer (one shot only), which has a timed limit as well (usually 60 seconds).
When timeout is reached, the student should be automatically sent to the next question.
I understand this strictly timed and linear scenario doesn't align with Moodle's spirit of learning. But it's a common setting among language assessment centres, where the focus relies on estimating the student's current language level, rather than enhancing the learning experience.
A. Saavedra