The advantages and disadvantages of analogue and digital technologies for
sound are:
Advantages
Of Digital technologies
• Less expensive
• More reliable
• Flexible
• Compatible with other digital systems
• Integrated networks
Of Analogue technologies
• Uses less bandwidth
• More accurate
Disadvantages
Of Digital technologies
• Digital communication require greater bandwidth
• Communication system must be synchronised
Of Analogue technologies
• Random noise which can lose signal and create distortion
Applications
Interactive media products
• Websites use sound to show the emotions of the production or page that the
website is promoting. The website can have backing music or will have a link to a
social music network such as YouTube.
• In the world of media a DVD interface is a concept that reacts between two
components whether it is something small like an SD card or something large such
as the internet.
• An interactive presentation is something simple such as a PowerPoint presen-
tation that has hyperlinks or has a link to music or sound that will make the presen-
tation interactive.
• Computer games have a high usage of sound or music for example in a game
such as tekken which would include sounds to do with fighting or a game such as
Tetris that would include happy jolly music.
• Mobile phone content can use sounds in the form of ringtones or even mp3
download files. Music files are normally formatted at AAC or MP3.

Theory of sound
Waveform
The waveform means the shape or form of the signal strength given to the wave.
Pitch
Pitch is what is used to show the sound on the frequency scale, you can have high and low
pitch when associated with melodies.
Hertz
This is a unit of frequency; it is measured in cycles per second. One of the most regular us-
es is to show the sine wave.
Decibel level
The decibels are used to measure the sound level; it is widely used in communications,
electronics and signalled material. It is used to describe the ratio; the ratio may be sound
pressure, voltage, amongst other things.
Sound generator
A sound generator is an object that vibrates to create sound. There are two types of sound
generators, the first is called a oscillating piston, this includes the soundboard of a key-
board, drums and cymbal. The second is called a utilized generator this is created by wind
instruments, creating sounds such as sirens and organs.
Sound recording
Sound recording is an electrical or mechanical way of saving sound, it is recording onto a
recording medium. The two main sound recordings are analog and digital, Analogy record-
ing methods store signals as a
continuous wave. Digital recording records directly to your storage system as a stream of
numbers.