Not all of them do. Autism is much to broad a diagnosis for this kink of generalization.
She had a monotone voice.
I wouldn't have fallen asleep if the speaker had used something more than a monotone. The monotone humming of the engine soon lulled me to sleep.
My professor always has a monotone voice every morning.Since my grandfather is so old,he always speaks in a very monotone voice.
The Headmaster addressed the assembly in a monotone voice
Interaction with the textits also a monotone
Interaction with the textits also a monotone
Interaction with the textits also a monotone
Monotone or monotonous.
Interaction with the textits also a monotone
monotone
monotonous and lacking in emotional engagement. It may make the audience lose interest and feel disconnected from the content being delivered. Inflection in the voice is important for conveying meaning and capturing the attention of listeners.
Interaction with the textits also a monotone