Used when downmixing multi-channel audio (like 5.1 surround) into a standard stereo format.
It may be a typo for Hydro , a common brand prefix for water-related products like Hydro Flask or HYDROS aquarium controllers. HDLoro
To provide a more precise write-up, could you clarify where you encountered the term? For instance, was it in a , a medical report , or an audio manual ? Used when downmixing multi-channel audio (like 5