Stay on top of this and visit him every day in the unit so that the staff know he has someone watching over his care.  You have to let the staff know you won't accept funny business from them.

I would first make sure his voices weren't caused by a change in medication or some kind of medication snafu.  It is also possible he might have heard these voices for awhile now and been afraid to tell you until it got worse.

The medications used to treat the voices that are symptoms of schizophrenia work differently for each person taking them.  Hopefully your husband will find success with a drug that can stop or at least greatly alleviate the voices he hears.  Sometimes the first medication tried will not work and it takes trial-and-error to find the right drug.

The thing to do is that if he is having a symptom it must be treated immediately rather than waiting for it to get better on its own.  Auditory hallucinations like voices are the hallmark of schizophrenia yet another possible diagnosis is depression with psychotic features.  He might have depression with psychotic  features.

That is why you have to keep on top of the staff, visit your husband every day, and grill them as to what they think is the accurate diagnosis right now, why they've chosen the drugs they did, and what the perceived outcome will be after a good run with the treatment offered.

I would not judge schizophrenia as being more severe than major depression by the way if a person with SZ has no symptoms and the person with depression can't get out of bed.  Everything's relative.  A newer diagnosis of SZ or another psychiatric condition is not necessarily a sign that there is no hope.

People with schizophrenia and other mental illnesses can recover.  Always keep the faith that your husband can recover.

Regards,

Christina