A smoke alarm using a mother’s voice significantly outperformed a tone alarm in a new randomized trial. The maternal voice alarms awakened 86%-91% of children and prompted 84%-86% to escape compared with 53% awakened and 51% escaped for the tone alarm.

See the source article by following the link below:
A smoke alarm using a mother’s voice significantly outperformed a tone alarm in a new randomized trial. The maternal voice alarms awakened 86%-91% of children and prompted 84%-86% to escape compared with 53% awakened and 51% escaped for the tone alarm.