Digital lifestyles

Introduction to digital lifestyle

1. Digital Lifestyles

2. Course objectives After completing this module, you will be able to: Explain the scope of digital technology. Explain the basic concepts and features of digital audio. Explain the basic concepts and features of digital video. Explain the basic concepts and features of digital photography. Explain how to enjoy digital media on a computer. Identify the different career opportunities made available by computers.

3. Benefits of Digital Technology Storing and sharing pictures Recording and sharing videos Communicating with business associates

4. Digital Technology and Media Devices Audio and video player Mobile phone Video game system Tablet computer Digital camera Digital video camera

5. Digital audio technology allows you to record, edit, and play digital audio files on a computer. lets you communicate with the computer by just speaking.

6. Characteristics of Digital Audio It can be compressed – to save space and allow for portability. It can be edited – move sections of the audio and add effects. some of the common audio file formats: Wave (WAV ) is used to store audio files in the wave audio format . Files are large but are of good audio quality MP3 format was developed by Motion Picture Expert Group to allow compression of audio and video for digital distribution. Files are smaller than WAV. Windows Media Audio (WMA ) format was developed by Microsoft and is used to store digital audio files . Note: Digital audio also allows streaming of digital audio files

7. Copying audio That process of copying audio and storing it on a CD or DVD is called burning . Requirements: Special Hardware e.g. CD/DVD writer Software e.g. ashampoo , nero Note: copying audios direct from the internet and storing them on recordable CDs or DVDs is illegal. Ensure that you have permission.

8. Converting audio Why convert CD/DVD audios? so that they takes less space in the hard disk. So that we can use them in other devices e.g. smartphones Requirements: Audio conversion software e.g. Microsoft Windows Media Player. Note: Converting CDs OR DVDs to different format is illegal. Ensure that you have permission before converting.

9. Speech Recognition and Synthesis Digital audio technology allows you to interact with the computer by just speaking. This helps improve productivity and empowers challenged users to expand their ability to use computers. There are two speech technologies: speech synthesis speech recognition.

10. Speech recognition Technology that allows you to communicate with a computer by using only your voice to enter text and to issue commands. you need an audio input device(microphone), a sound card, and speech recognition software that converts human speech into text or commands for the computer. You can configure the speech recognition feature in Windows 7 by using the Ease of Access link in Control Panel.

11. Speech synthesis Technology that allows the computer to speak to you by converting text to digital audio. Windows 7 has a built-in text-to-speech utility called Narrator that supports speech synthesis. A screen reader is a program that reads the text on the computer screen aloud. To support speech synthesis your computer must be equipped with a sound card and speakers. You can configure the text-to-speech feature in Windows 7 by using the Ease of Access link in Control Panel.

12. Digital video Characteristics: you can edit them easily on a computer by using digital video editing software they can be compressed A camcorder captures and records video. Camcorders can be broadly classified into two categories: Analog Camcorder . An analog camcorder records and stores video in an analog format on a tape . Digital Camcorder . A digital camcorder records and stores video in a digital format, which makes editing the recorded video easy.

13. Digital Video Editing Add titles and background music to your video to make it more appealing. Cut or remove certain scenes from the video. Add special effects, such as fade-in and fade-out, to the video. Enhance video quality by adjusting its brightness, contrast, and color. Record audio over the video to describe certain scenes.

14. Digital Video Editing It can either be linear or nonlinear. In linear editing, you sequentially traverse a file to edit a frame in the middle. It is done on tapes. In nonlinear editing , you directly go to the frame and remove it from your video. It is done on Random access devices, such as DVDs and CDs. Windows Movie Maker - capture a frame from a movie and save it as a still image(. jpg file) OR edit the video and save it in Windows Media Video (WMV) format. Warning: Copying video directly from the Web and storing it on CDs is illegal. Copying video directly from a video CD or DVD is also illegal. Ensure that you have permission to copy any video before you copy it.

15. Web Video Technologies allow you to transfer digital video files over the Internet . E xamples: Video streaming Downloading video Web conferencing