not really 'sound recognition' as in voice-activated, but it had sonic sounds emitted from the remote that could be easily mimicked if you were talented enough.
However, it was ahead of its time in that it featured a
OSD and had electronic-tuning, while most TVs later on in the early 1980s still needed to be manually-tuned by those tiny wheels in the same manner as early VCRs. Even Sony didn't catch on to electronic-tuning until the mid-to-late 1980s.
I have a later model variant of this same TV, albeit it's missing the cool 'spacey' channel
OSD that this one had(shows a yellow '03' when powered on for a few, then just blinks off), but it still uses a 9V battery in the remote. but instead of it being sound emitter-based, it's early IrDA remote. it's called 'TouchTune TOTAL remote control' when these TVs first came out they were tagged in advertisements as 'Cable Ready' since all you needed to do was plug in a cable and go. no fine-tuning or mechanical pre-sets like most TVs of the time.