sound technology. basics of sound sound is perhaps the most sensuous element of multimedia types of...
TRANSCRIPT
![Page 1: Sound technology. Basics of Sound Sound is perhaps the most sensuous element of multimedia Types of sound in multimedia – speech – music – special effects](https://reader035.vdocuments.us/reader035/viewer/2022062423/5697bfcf1a28abf838ca9f35/html5/thumbnails/1.jpg)
Sound technology
![Page 2: Sound technology. Basics of Sound Sound is perhaps the most sensuous element of multimedia Types of sound in multimedia – speech – music – special effects](https://reader035.vdocuments.us/reader035/viewer/2022062423/5697bfcf1a28abf838ca9f35/html5/thumbnails/2.jpg)
Basics of Sound
• Sound is perhaps the most sensuous element of multimedia
• Types of sound in multimedia– speech– music– special effects– mood-setting background sounds– etc
![Page 3: Sound technology. Basics of Sound Sound is perhaps the most sensuous element of multimedia Types of sound in multimedia – speech – music – special effects](https://reader035.vdocuments.us/reader035/viewer/2022062423/5697bfcf1a28abf838ca9f35/html5/thumbnails/3.jpg)
The power of sound
Although sound is rarely the main content in a multimedia production, remember that
• Sound can make the difference between an ordinary multimedia presentation and a professionally spectacular one
• Misuse of sound can wreck your project
![Page 4: Sound technology. Basics of Sound Sound is perhaps the most sensuous element of multimedia Types of sound in multimedia – speech – music – special effects](https://reader035.vdocuments.us/reader035/viewer/2022062423/5697bfcf1a28abf838ca9f35/html5/thumbnails/4.jpg)
Sound in Multimedia
• To use sound in multimedia you will not need special knowledge about harmonics, intervals, sine waves or notation
• However, you should know the following:– How to make sounds– How to record and edit sounds on your computer– How to incorporate sounds into your multimedia
work
![Page 5: Sound technology. Basics of Sound Sound is perhaps the most sensuous element of multimedia Types of sound in multimedia – speech – music – special effects](https://reader035.vdocuments.us/reader035/viewer/2022062423/5697bfcf1a28abf838ca9f35/html5/thumbnails/5.jpg)
Digital audio
• Digital audio means digitized sound• The source can be whatever, natural or
prerecorded• Digitized sound is sampled sound: every nth
fraction of a second, a sample of sound is stored as digital information (bits and bytes)
![Page 6: Sound technology. Basics of Sound Sound is perhaps the most sensuous element of multimedia Types of sound in multimedia – speech – music – special effects](https://reader035.vdocuments.us/reader035/viewer/2022062423/5697bfcf1a28abf838ca9f35/html5/thumbnails/6.jpg)
Digital audio
• Sampling rate: how often a sample is taken• Sample size: the amount of information that is
stored about each sample• Typical sampling frequencies are 44,1 kHz,
22,05 kHz and 11,025 kHz• Sample sizes are either 8 bits or 16 bits
![Page 7: Sound technology. Basics of Sound Sound is perhaps the most sensuous element of multimedia Types of sound in multimedia – speech – music – special effects](https://reader035.vdocuments.us/reader035/viewer/2022062423/5697bfcf1a28abf838ca9f35/html5/thumbnails/7.jpg)
Editing digital recordings• Trimming: removing dead air and blank space• Splicing and assembly: remove the extraneous noises
and assemble longer recordings from many shorter ones
• Volume adustments: provide a consistent volume level
• Format conversion: convert your file to a proper format
• Resampling or downsampling: if using lower rates and resolutions, but 16-bit sampling rate (to save disk space)
![Page 8: Sound technology. Basics of Sound Sound is perhaps the most sensuous element of multimedia Types of sound in multimedia – speech – music – special effects](https://reader035.vdocuments.us/reader035/viewer/2022062423/5697bfcf1a28abf838ca9f35/html5/thumbnails/8.jpg)
Editing digital recordings
• Fade-ins and fade-outs: to gradually fade-in or –out if needed
• Equalization: modify recording’s frequency content to sound brighter or darker
• Time stretching: alter the length without changing the pitch
• Digital Signal Processing (DSP) (reverberation, multitab delay, chorus etc)
• Reversing sounds
![Page 9: Sound technology. Basics of Sound Sound is perhaps the most sensuous element of multimedia Types of sound in multimedia – speech – music – special effects](https://reader035.vdocuments.us/reader035/viewer/2022062423/5697bfcf1a28abf838ca9f35/html5/thumbnails/9.jpg)
Audio file formats
• There are dozens of them, created for different purposes over the years
• Nowadays the most used digital audio formats are mp3 (computers, portable mp3 players, some DVD players), wma (Windows-only audio format) and rm/ram (RealAudio format).
• Other formats: .aiff, .mod, .snd, .mid, .wav
![Page 10: Sound technology. Basics of Sound Sound is perhaps the most sensuous element of multimedia Types of sound in multimedia – speech – music – special effects](https://reader035.vdocuments.us/reader035/viewer/2022062423/5697bfcf1a28abf838ca9f35/html5/thumbnails/10.jpg)
Adding sound to your multimedia project
• Decide what kind of sound is needed and where you’ll use them
• Acquire source material• Edit the sounds to fit your project• Test the sounds to be sure they are timed
properly
![Page 11: Sound technology. Basics of Sound Sound is perhaps the most sensuous element of multimedia Types of sound in multimedia – speech – music – special effects](https://reader035.vdocuments.us/reader035/viewer/2022062423/5697bfcf1a28abf838ca9f35/html5/thumbnails/11.jpg)
Stereo recording
![Page 12: Sound technology. Basics of Sound Sound is perhaps the most sensuous element of multimedia Types of sound in multimedia – speech – music – special effects](https://reader035.vdocuments.us/reader035/viewer/2022062423/5697bfcf1a28abf838ca9f35/html5/thumbnails/12.jpg)
Dynamic microphone
![Page 13: Sound technology. Basics of Sound Sound is perhaps the most sensuous element of multimedia Types of sound in multimedia – speech – music – special effects](https://reader035.vdocuments.us/reader035/viewer/2022062423/5697bfcf1a28abf838ca9f35/html5/thumbnails/13.jpg)
Capacitor microphone
![Page 14: Sound technology. Basics of Sound Sound is perhaps the most sensuous element of multimedia Types of sound in multimedia – speech – music – special effects](https://reader035.vdocuments.us/reader035/viewer/2022062423/5697bfcf1a28abf838ca9f35/html5/thumbnails/14.jpg)
High sound pressure possible
General microphone
Sensitive, low sounds
Phantom power
Attenuates handling sounds Sensitive to handling sounds
Interview, song, speech, percussions, music
Effects, speech, music
![Page 15: Sound technology. Basics of Sound Sound is perhaps the most sensuous element of multimedia Types of sound in multimedia – speech – music – special effects](https://reader035.vdocuments.us/reader035/viewer/2022062423/5697bfcf1a28abf838ca9f35/html5/thumbnails/15.jpg)
Sphere Heart, cardioid Shotgun Eight
![Page 16: Sound technology. Basics of Sound Sound is perhaps the most sensuous element of multimedia Types of sound in multimedia – speech – music – special effects](https://reader035.vdocuments.us/reader035/viewer/2022062423/5697bfcf1a28abf838ca9f35/html5/thumbnails/16.jpg)
![Page 17: Sound technology. Basics of Sound Sound is perhaps the most sensuous element of multimedia Types of sound in multimedia – speech – music – special effects](https://reader035.vdocuments.us/reader035/viewer/2022062423/5697bfcf1a28abf838ca9f35/html5/thumbnails/17.jpg)
![Page 18: Sound technology. Basics of Sound Sound is perhaps the most sensuous element of multimedia Types of sound in multimedia – speech – music – special effects](https://reader035.vdocuments.us/reader035/viewer/2022062423/5697bfcf1a28abf838ca9f35/html5/thumbnails/18.jpg)
![Page 19: Sound technology. Basics of Sound Sound is perhaps the most sensuous element of multimedia Types of sound in multimedia – speech – music – special effects](https://reader035.vdocuments.us/reader035/viewer/2022062423/5697bfcf1a28abf838ca9f35/html5/thumbnails/19.jpg)
![Page 20: Sound technology. Basics of Sound Sound is perhaps the most sensuous element of multimedia Types of sound in multimedia – speech – music – special effects](https://reader035.vdocuments.us/reader035/viewer/2022062423/5697bfcf1a28abf838ca9f35/html5/thumbnails/20.jpg)
![Page 21: Sound technology. Basics of Sound Sound is perhaps the most sensuous element of multimedia Types of sound in multimedia – speech – music – special effects](https://reader035.vdocuments.us/reader035/viewer/2022062423/5697bfcf1a28abf838ca9f35/html5/thumbnails/21.jpg)
File size, Bytes
Duration of sound in seconds
![Page 22: Sound technology. Basics of Sound Sound is perhaps the most sensuous element of multimedia Types of sound in multimedia – speech – music – special effects](https://reader035.vdocuments.us/reader035/viewer/2022062423/5697bfcf1a28abf838ca9f35/html5/thumbnails/22.jpg)
Basic Windows sound
![Page 23: Sound technology. Basics of Sound Sound is perhaps the most sensuous element of multimedia Types of sound in multimedia – speech – music – special effects](https://reader035.vdocuments.us/reader035/viewer/2022062423/5697bfcf1a28abf838ca9f35/html5/thumbnails/23.jpg)
![Page 24: Sound technology. Basics of Sound Sound is perhaps the most sensuous element of multimedia Types of sound in multimedia – speech – music – special effects](https://reader035.vdocuments.us/reader035/viewer/2022062423/5697bfcf1a28abf838ca9f35/html5/thumbnails/24.jpg)
![Page 25: Sound technology. Basics of Sound Sound is perhaps the most sensuous element of multimedia Types of sound in multimedia – speech – music – special effects](https://reader035.vdocuments.us/reader035/viewer/2022062423/5697bfcf1a28abf838ca9f35/html5/thumbnails/25.jpg)