DUMB AID - SOUND

The video introduces Mr. Alfred Glass, who lost his voice due to an operation. His family contacted Mr. Lionel Fothergill, the inventor of an artificial speech machine. The video demonstrates the machine, which includes a microphone, vibrator, and amplifier, and showcases its ability to produce speech through a loudspeaker. The demonstration involves counting numbers, illustrating the machine's functionality.

Who is Mr. Alfred Glass?

• A person who lost his voice

• A scientist

• An inventor

• A teacher

What did Mr. Lionel Fothergill invent?

• A soundproof room

• A new type of microphone

• An artificial speech machine

• A voice amplifier

What are the components of the artificial speech machine?

• Microphone, speaker, and battery

• Vibrator, amplifier, and microphone

• Amplifier, speaker, and cable

• Microphone, battery, and speaker

What is the purpose of the loudspeaker in the demonstration?

• To play music

• To project the sound from the machine

• To record the sound

• To amplify the sound

What was demonstrated using the artificial speech machine?

• A poetry recital

• A speech counting from 1 to 26

• A scientific experiment

• A musical performance