Module 8: Sound Sensor

What is a sound sensor?

• A sensor used to emit sounds through a microphone

• A sensor used to detect various sounds through a microphone

• A sensor used to measure the frequency of sound and display it on a small screen

• A sensor used to blast music

Where are sound sensors not usually found?

• security system

• burglar alarms

• earbuds

• phones

How many pins does a sound sensor usually have?

• 3

• 4

• 3 or 4

• None

What are the pins for a sound sensor

• +, -, A, D

• +, -, A

• +, -, D

• +, -, S

In order to collect values from the sound sensor, which function should we use to read the data?

• digitalRead()

• analogRead()

• digitalRead() or analogRead()

• neither digitalRead() nor analogRead()

True or False: 1 represents high values in the serial monitor for the sound sensor and 0 represents low values in the serial monitor for the sound sensor

• True

• False

Identify the sound sensor

• 
• 
• 
• 

True or False: If you decide to connect both the analog and digital pins for the sound sensor, it will not work

• True, it will explode and will no longer be useable

• True, it will just stop working but you can fix it buy unplugging one of them

• False, it will work perfectly fine and you can use both pins at the same time

• False, it will work but you cannot necessarily use both pins at the same time to read values, pick one or the other

True or False: Sound vibrates and hit the diagram plate of the sound sensor and values can be read

• True, the sound waves vibrate and hit the plate to be read

• True, the sound is directly hit onto the plate to be read

• False, it is not called the diagram plate, it is a diaphragm plate

• False, the values cannot be read

True or False: When the sound sensor vibrates, it changes the capacitance, which causes the voltage to change.

• True

• False