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Younes Al-Sayed-Hasan

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Presentation on theme: "Younes Al-Sayed-Hasan"— Presentation transcript:

1 Younes Al-Sayed-Hasan 223646
Loud Speakers Younes Al-Sayed-Hasan 223646

2 Outline The basic principle The main components of the loudspeaker
How a Speaker works? Why do we concentrate on the enclosures? Types of Speaker Enclosures Factors determine the quality of the sound generated Conclusion loud speakers

3 The Basic Principle A loudspeaker is an electromechanical device which converts an electrical signal into sound. Loudspeakers are used in numerous applications from hearing aids to air raid sirens Loudspeakers are the most variable elements in any audio system, and may be responsible for marked audible differences between otherwise identical systems. Microphone Audio Circuit Speaker loud speakers

4 The Main Components loud speakers

5 loud speakers

6 How a Speaker works? loud speakers

7 Resistance of a speaker Difference between large and small speaker
Stereo system loud speakers

8 Efficiency Definition mathematically physically How to increase it
Reduce the cone resistance mass Increase the force Strong magnet loud speakers

9 Why do we concentrate on the enclosures?
Back-to-front Cancellation loud speakers

10 Why do we concentrate on the enclosures? (Cont.)
2. Coupling Loudspeaker to air It can not produce a sound whose wavelength > its diameter Ex. 8-inch Hz loud speakers

11 Types of Speaker Enclosures
Closed Box Enclosure loud speakers

12 Types of Speaker Enclosures (Cont.)
Horn loud speakers

13 loud speakers

14 Factors determine the quality of the sound generated
Size of the room Speaker Placement in the room Is the room empty or not ? loud speakers

15 Conclusion Magnetic filed plays a main rule of conversion electricity into sound. To choose your speaker, many factors must be considered like size of the room and place of the speaker. By using enclosures, we will avoid 2 problem Back-to-front cancellation Coupling loudspeaker to air loud speakers

16 References http://hyperphysics.phy astr.gsu.edu/hbase/audio/spk.html
Designing, Building & Testing your own Speaker System By David B. Weems loud speakers

17 Q & A loud speakers


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