Could a Shirt Hear Your Heartbeat? | SciShow News

The video discusses innovative research on a fabric that can hear, mimicking the human ear's structure using piezoelectric materials. This fabric can detect sound and has potential applications in health monitoring and aiding the hearing impaired. Additionally, the video explores research on pig vocalizations, linking them to emotional states, which could lead to tools for better animal welfare.

What is the basic principle behind sound as explained in the video?

• Sound is a form of light waves.

• Sound is a series of pressure waves.

• Sound is a type of magnetic field.

• Sound is a chemical reaction.

What part of the human ear inspired the design of the fabric-based microphone?

• The cochlea

• The ear canal

• The tympanic membrane

• The auditory nerve

What material is used in the fabric to convert sound into electrical signals?

• Silicon

• Carbon nanotubes

• Piezoelectric fiber

• Graphene

What was one of the quietest sounds the fabric-based microphone could detect?

• A pin drop

• A library's ambient noise

• Rustling leaves

• A whisper

What potential application of the hearing fabric is mentioned in the video?

• Aiding the hearing impaired

• Monitoring heart rate

• Tracking weather changes

• Detecting earthquakes

What type of vocalizations are associated with negative situations in pigs?

• Soft murmurs

• Loud barks

• High-pitched squeals

• Low-pitched grunts

What was the success rate of the computer program in classifying pig calls?

• 90%

• 70%

• 50%

• 100%