Transcript 2.02E Adding Sounds into Computer Animations

2.02E Adding Sounds
into
Computer Animations
2.02 Develop Computer Animations
Using Sound in Animations
Sound files can be used to enhance an
animation.
 Sound could include:

 Music
 Narration
 Sound

Effects
Do not use sound unless it enhances the
animation. If the sound is distracting and
irrelevant to the animation, do not use it.
Sound File Formats
Sound File Formats

Most animation and video programs
enable sound files to be imported in at
least two formats:
 MP3
 WAV

Wave files have the highest quality sound.
WAV (Waveform)
The standard format for sound on
computers running the Windows operating
system.
 WAV files produce high-quality sound.
 Generate large file sizes.

MP3
MP3 is a standard format for
music files sent over the
Internet that compresses music
or other types of audio.
The compression process
removes sounds that humans
cannot hear.
To most listeners, MP3 files
sound as good as WAV files.
Recording Sound
Files
Recording Sound Files

Sounds can be recorded or captured from a
variety of sources.
 For
example, record your voice using a microphone
that is connected to the computer’s sound card.
 Or, connect a device such as a CD player, MP3
player, or tape player to the sound card Line-in jack to
record CD audio or other pre-recorded material.

Some animation software allows you to record
narration without having to create the sound in a
separate program.
Recording Sound Files



When recording, be aware that sound files tend
to be large.
Large sound files will increase the size of the
finished animation which means the animation
will take longer to download and require more
storage space.
Keep sound files as small as possible while
maintaining sufficient quality by:
 Recording WAV files at a lower quality setting.
 Using recording or conversion software that will
save
the sound file in a compressed format such as MP3.
Importing Sound
Files
Importing Sound Files

Sound files are usually
imported into the animation
much like image files.

Most animation programs
require or recommend that
each sound object be
inserted on its own layer.
Guidelines for Using Sound
If
the animation is for a Web site,
keep the overall file size small for
faster downloads by using more
compact MP3 files and looping a
shorter sound segment.
On
the other hand, if the animation
is part of a presentation delivered in
an auditorium equipped with a highquality audio system, use the
highest quality sound file possible.
When
creating or choosing the
sounds to include in the animation,
keep the intended purpose of the
animation in mind.
Copyright
Remember
that in order to avoid a violation of
copyright law, only original music can be used in
professional productions such as Web animations
and presentations.
Fortunately,
there is a large number of
inexpensive programs that combine sound loops to
create original, royalty-free music for animations
and movies.
Review
Adding Sounds into Computer Animations

Recording sound files
 Importing sound files
Purpose of Compression

To reduce the amount of storage space
required by files. This means files will
download and upload more quickly.
Professional Productions

Any type of music can be used as long as
copyright restrictions are observed. If a
copyrighted piece of music is used,
royalties will have to be paid to the
copyright owner and permission will have
to be obtained. If the music is an original,
the person who wrote an played the music
must give their permission to use it.