Usage of "alter voice"

Encara no tenim significats per a "alter voice".

Ús de alter voice en anglès

But in the deep silence his husky, altered voice seemed to break. 
 The Three Cities Trilogy: Paris, Volume 5 

I want to be alone, was answered, in the same altered voice. 
 The Good Time Coming 

After a moment's pause, he spoke in a low and altered voice:- 
 The Atlantic Monthly, Volume 2, No. 14, December 1858 / A Magazi... 

She became really afraid again, and she said gravely, in an altered voice: 
 His Masterpiece 

She offered up more graphic details in a breathy, machine- altered voice. 
 Caught 

But you see... and she interrupted herself to ask in an altered voice: 
 The Bride of the Nile — Complete 

She came and looked me in the face, and said in an altered voice: 
 Sarrasine 

There was that in the trembling frame and altered voice that impressed her strangely. 
 Fated to Be Free: A Novel 

Then she lifted her eyes to his and went on in an altered voice. 
 The House of Mirth 

Then there was a little pause, after which he spoke in an altered voice. 
 Can You Forgive Her? 

But Mrs. Barker, who, perhaps, knew her husband better, said in an altered voice:- 
 The Three Partners 

What do you mean? asked Eugenie, in an altered voice. 
 Zibeline — Complete 

Wendy pinched her nose and continued in an altered voice. 
 Mysterious Skin 

The forward team's just waiting for a target, he said in his mechanically altered voice. 
 Stars rain down 

But then suddenly his face clouded, and he asked, in a grave and altered voice: 
 A Thorny Path — Volume 05 

Having heard this, Zbyszko was silent for awhile; then he asked in an altered voice: 
 The Knights of the Cross, or, Krzyzacy: Historical Romance 

Significats de alter voice en anglès