Sound Introduction

Sound

Sound is a disturbance of molecules and these molecules can be air molecules, solid object molecules etc.

Sound editing

sound editing and mixing are used to create believable and immersive film experience. Sound editing is a post production process and used to polish amateur fields. Audio editing can be done using video editing software but it is more flexible if we use special software designed for audio editing. If we are using audio editing software then we need to expose our sound track into audio editing software then after finishing editing work again we need to import it back into our video timeline. We can use audacity which is freeware program for audio editing or we can use professional audio editing software.

Physical Components of sound

Frequency- frequency is defined as the number of cycles or complete waveforms that occur within the period of one second.

Pitch- pitch is the relative highness or lowness of a tone or frequency; it is the number of cycles with in a second.

Amplitude and loudness- amplitude describes the loudness or softness of the sound that we are listening to. Like the frequency range of our hearing, we also have limitations on the loudest and softest sound we can perceive. The loudness of sound is measured in decibel (db).

Microphone

Microphone is a device that convert soundwaves into electrical signals. Microphone is used in many applications such as telephone, hearing aid etc.

Microphone has diaphragm which vibrate when it struck sound waves then it causes other components of the microphone to vibrate.

These vibrations are converted into an electric current which becomes the audio signals.

Types of microphone

Dynamic microphone- dynamic microphones do not require a power source. They are rugged, robust and reliable microphones. Dynamic mics are often used on stage, but they can add depth and value in a recording environment as well. They are perfect for drums and electric guitar cabinets.

Condenser microphone- condenser microphone require a power source, which can come from a phantom power supply or a battery. Condenser microphones are generally more sensitive than dynamic microphones and have better high frequency response characteristics.

Language dubbing- language dubbing is a post production process used in filmmaking and video production in which additional or supplementary recordings are mixed with original sound to create some tracks. 

Dubbing process take place after the preparation of necessary tracks such as dialogues, effects, foley and music etc.

Different types of video editing 

Film splicing- it is not video editing, it is film editing. In this type of editing film is edited by cutting sections of films and rearranging them. This process is very simple and mechanical, using pair of scissors and some splicing tape all editing work performed.

Linear editing- linear editing is the process of assembling footage in a sequential fashion from start to finish. This type of editing is performed with video tape. It requires at least two video machines connected together, one acts as the source and other is the recorder.

Non-linear editing- non linear editing is generally carried out on computer software. In this type of editing, editor first gather footage together into the software program then Cut, Copy and paste it together in any order and when the output is ready it is recorded to the master tape.

UNIT-207
Multimedia Applications (Sound, Video Editing)

1. Sound Introduction
2. Nature of Sound
3. Microphone and Its types, characteristics, application in film and television production
4. Sound track and Sound Editing, Mixing console
5. Languages Dubbing
6. Video Editing
7. Video Editing Types: Linear and Non-Linear
8. Role of Editor
9. Video Cassette Recorder,
10. Windows Movie Maker