Which guide's voice tone is best for deep relaxation?

I have observed that the voice of certain guides is either too professional or tonal and that some are too soft, leaving me feeling more sleepy than awake and relaxed. This sound contradiction contributes to my impatience and frustration. My question would be whether there is any proof that a particular auditory tone or gender is better than the other in stress and anxiety reduction in the nervous system in the long term. Name: Hemant, DOB: 17th January 1997, 5 AM.