SD+&+D+Sound

media type="custom" key="27915069"


 * Video**

Watch this video from 1 minute on to hear the impact of a reduced sample rate and bit rate [|Bit rate and sample rate video]


 * Tasks**

1. Using a MIDI sequencer (a) Download this MIDI file [] (b) Import the file in the online sequencer at [] (c) Use the sequencer to edit the tracks (d) Create your own midi sequence track

2. Use Audacity to create a laser sound effect from a musical note

3. Download an audio sample from [] and import it into Audacity. Use the following tools/features of Audacity:
 * crop
 * different effects
 * echo
 * reverse
 * volume
 * clipping (H)
 * stereo (H)
 * fade (H)

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.

Questions

1. Explain what is meant by synthesised sound

2. How does MIDI work?

3. State and describe 4 attributes of a sound stored by MIDI

4. What is the term used to describe the process of capturing an analogue sound and converting it to a digital signal?

5. Andy samples a sound at 8KHz and 44.1KHz. (a) Use a diagram to describe the difference between the two sample rates. (b) How will be the audible difference between the two sounds?

6. Sara plans to sample a chord on her piano using an 8 bit sample depth. What advice would you give Sandy and why?