Page 42 - DCAP303_MULTIMEDIA_SYSTEMS

Multimedia Systems

notes 3.6 audio CD playback

In this era of digital music, playing a music CD on your computer has become very common.
The best part is that you can sort the order in which you want to listen the tracks and continue
playing without interruption. If you have a good CD of 650 MB, you can play 140-150 songs at
a stretch.
instructions
1. Check the compatibility of the drive in your computer. All CD drives in a desktop computer
are located at the top of the CPU. If you have a laptop, you will see the CD slot on one side
of the machine.
2. Take the CD out of its cover and place it in the CD drive.
3. Switch on your computer and wait till all applications are ready.

4. Click on the “Start” menu and choose “Programs.”
5. Click on “Programs” and choose “CD player” from the Entertainment menu of Accessories.
You can also choose the Media player from the “Programs” menu and open the file location
to play music.
6. Choose the “Play” option in the CD player window (a single right pointing arrow in the
top row).
7. Use the “Stop,” “Pause,” “Skip next track” and “Previous track” buttons to set your
preferences while playing the CD.
8. Select from the Edit play list from the Disc menu in order to change the sequence of the
tracks.
9. Adjust the volume by clicking on the “Speakers” icon on the task bar of your computer.
10. Adjust the bass, treble and other options on the Equalizer for a perfect and melodious sound
from the CD.

Change the length of a MIDI file (by varying its tempo) without changing the
pitch of the music or degrading the audio quality.

3.7 audio recording

Traditional microphones capture sound in what is called analogue form in waves. The first problem
of getting sound into a computer is that you must have some sort of go-between gizmo to convert
this analogue source into the digital format recognized by computers. The second problem of
getting sound into a computer is that most microphones record at a low level and then use some
sort of amplifier to boost the sound. Even if you have a digitizing gizmo, you may also need an
amplifying gizmo. Sound is difficult. It is the most difficult and expensive part of this process.
Following steps are used for recording audio:
1. Selecting a good location
2. Using the appropriate microphone
3. Different media formats and choices
4. Monitoring the recording

36 LoveLy professionaL University