The term "Hiss canal or ducts zones" refers to the areas or passages where a hissing sound is produced. Synonyms for this phrase include "Hiss pathways", "Hiss conduits", and "Hiss channels". These terms describe the pathways or channels through which the hissing noise travels. Additionally, other related synonyms for "hiss" itself can include "buzz", "sibilance", "whisper", and "purr". Each synonym highlights a different aspect of the sound or the way it is produced. Overall, these synonyms for "Hiss canal or ducts zones" help to convey the idea of a specific location or path where the hissing sound emanates from.