Multimedia and Application:
- Introduction of multimedia.
- Advantages and disadvantages.
- multimedia Network.
- multimedia hardware.
- File Compression Technique.
- lossy vs lossless compression.
- Media file format.
- Sound media File.
- Video media file
- Audio File Standard.
- Image file Standard.
- Video File Standard.
- Photoshop Basic.
- Painting and Drawing Tools.
- Selection and Transformation tool.
- Color Models.
- Multimedia Authoring Tools.
- Macromedia Flash.
- Animation and Its Type.
- Designing an Animation.
Audio file formats
Audio file formats are standards for storing the audio file in a Storage device. Audio file formats differ based on the technic used to compress the audio file.
Audio file format uses three types of standards:
Some examples of Audio file format standard are:
Lossy formats:
Lossy formats are the methods in which the original audio file are reduce more as compare to lossless compression.
MP3:
- mp3 is most common audio file format.
- MP3 is developed by Moving Picture Experts Group (MPEG) released in 1993.
- MP3 is a lossy compressed format
- MP3 file fomat is 1/10th the size of .WAV or .AIF files
- MP3 Files extension is .mp3
MP3 is 1 minute recording needs 1 MB storage
- MP3 format is mostly used and supported by many devices.
AAC:
- AAC stands for Advanced Audio Coding
- AAC developed in 1997 after MP3.
- AAC is a lossy compressed format
- AAC used by YouTube, i tune, Android, iOS,
WMA :
- WMA stands for Windows Media Audio.
- WMA released in 1999 by microsoft.
- WMA is Lossy compression
- WMA is not widely used
Some other examples of Lossy audio file format are: MOC, OGG
Lossless formats.
Lossless audio file format are the methods used to compress an audio file to minimize the audio file size.
FLAC:
- FLAC stands for Free Lossless Audio Codec.
- FLAC is compress 50% of original file
- FLAC uses lossless compression.
WAV:
- WAV stands for Waveform Audio File Format
- WAV is released in 1999 by micosoft.
- WVA is least efficient in compresso n.
- WAV used lossless compression.
- WAV is not an open source
- WAV least hardware supported.
ALAC:
- ALAC stands for Apple Lossless Audio Codec
- Released in 2004.
Some other examples of lossless audio file format are: WavPack, Monkey’s Audio
Uncompressed formats.
uncompressed file format is a real sound wave, (original ) which are not compress by any form.
- uncompressed file format uses more storage.
- uncompressed file format gives the best quality of sound.
WAV:
- WAV Stands for Waveform Audio File Format
- WAV is a subset of Riff
- WAV Developed Microsoft and IBM in 1991.
- WAV is an uncompressed/lossless compress format.
- it is used to store bitstream in PCs
- WAV provides better quality than lossy compression.
PCM:
- PCM stands for Pulse-Code Modulation.
- PCM is used for CDs and DVDs,
- PCM captures analog waveforms and turns them into digital bits.
- PCM is an uncompressed file format.
Some other uncompressed file formats are: AIFF, AU, or BWF
Examples of Lossy Audio File Format and Lossless Audio File Format
Lossy Audio File Format | Lossless Audio File Format |
AA3 | ALAC |
AAC | FLAC |
MP3 | APE |
MPC | SHN |
OGG | TTA |
WMA | WV |