Data Representation - Sound

Lesson Objectives

To remember that computers interpret only zeros and ones (binary)

To understand how sound is represented on a computer

Starter

You have until the music stops to find definitions of analogue and digital sound
Explain your findings to the class......

Main

Red Task
Watch the video HERE 

Make a list of at least 10 key words or terms to do with this topic.


Orange Task

What do the terms bit depth and sample rate mean? 

Use THIS website to make a wordsearch of your key words from the Red Task. 
Print it out and ask a friend to complete.

Green Task
How many audio file formats can you list?

Do some research on Lossy and Lossless compression in audio files.
Which formats lose data when compressed and which don't?

Use fileinfo.com to investigate audio file formats



Plenary
Test your knowledge HERE
Complete the JIGSAW 

Extension
Find out about the term 'Codec'.


Further Reading

BBC Bitesize  
Teach-ICT 

Homework

Add a post to your Blog about how sound is stored on the computer.
Include your findings on CD and DVD sample rates, as well as your research on audio file formats and compression.

Try to include as many of the following key words as you can:

analogue
digital
sample rate
bit depth
ADC (Analogue Digital Converter)