Technical+terms+(Sound)

Introduction
Audio edtiors offer a number of tools and functions.

Task (Int 2)
Investigate the following audio editor tools and features:
 * crop
 * different effects
 * echo
 * reverse
 * volume
 * decrease sampling frequency
 * decrease sampling depth

Capture an audio file or download an audio file from the web. Open the file in a audio editor that you are familiar with. Use the editing tools/features listed above.

Write a blog post containing a short description of each of the tools/features, and explain how to use it within your image editing program.

Task (Higher)
Investigate the following audio-editing functions:
 * clipping
 * stereo
 * surround sound
 * fade

Capture an audio file or download an audio file from the web. Open the file in a audio editor that you are familiar with. Use the editing tools/features listed above.

Write a blog post containing a short description of each of the tools/features, and explain how to use it within your image editing program.

Glossary of terms (Int 2)

 * lossy compression - some of the audio data is lost during the compression process
 * sampling depth/resolution (bytes) - the number of bits used to store the information about each audio sample
 * sampling frequency (Hz, KHz) - the number of samples per second taken from the audio signal
 * sound time (s) - the length of time for which the sample has been taken

Task (Int 2)
For each of the terms above, explain what impact changing them will have on the overall quality of sound.

Glossary of terms (Higher)

 * bit rate - the rate at which digital signals need to be processed to analogue for us to hear them. The network bandwidth has to be sufficient to transfer data.
 * normalising - stretching the amplitude of a sound signal so that the full dynamic range is used.

Task (Higher)
For each of the terms above, explain what impact changing them will have on the overall quality of sound.

Higher Assessment Task
Complete Higher Multimedia Assessment Task 3