Unit 73: Sound for Computer Games
Aims:
P2 understand the methods and principles of sound design and production
Research and explain when you would use the following sounds
format and why?
Sound file formats
Uncompressed: e.g. wav (Waveform Audio File Format) is a
large audio file. Mainly used for storing audio files on PC’s and is used by
Microsoft, aiff (Audio Interchange File Format) is an audio storage file which was
produced by Apple Computer, au (AU File Format) is a simple audio file format
created by sun microsystems, smp, voc (Creative Voice File) was developed by
creative Labs and is used for storing sound and speech.
Lossy compression: e.g. mp3 (MPEG-1 or MPEG-2 Audio Layer III) is an audio coding format and digital audio, ra Real Audio format designed for online streaming audio over the internet and vox mainly uses the dialogic ADPCM (Adaptive Differential Pulse Code Modulation) codec.
1.How can resolution and bit-depth constrain file size? They
can constrain the file size by not being able to be used on devices like MP3
and other lossy compressions, it also effects the amount of storage available
on that storage device. Resolution can constrain file size by becoming better
pixelated which then leads to it becoming a larger file size and therefore taking
up more room on the file.
2. Explain what the following words mean:
Sample rate - Sample
rate is the amount of samples taken over a number of seconds to represent the
recordings digitally.
Mono – Mono is
sound that only comes from one speaker and only from the direction that is
placed in, this was used before stereo.
Stereo – Stereo is
when it has two speakers which can project sound from two different angles not
just one. This is a better than the previous mono which could only have one
speaker to project the sound.
Surround - Surround sound is when there are several
speakers used and are placed around the room you’re in and give you a better experience
of the sound as it gets projected from multiple directions.
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