19/02/2025 COMPUTER SCIENCE PRESENTATION TOPIC: SPEAKER Group members: IHIRWE ALLEN BRIAN SHUKRANI FARAJA JENNAH KAYIHURA GABBY ELVIS How a Speaker Works A Detailed Presentation Introduction to Speakers ● A speaker is a device that converts electrical signals into sound waves. It is used in various applications like home audio systems, mobile phones, and public address systems. History of Speakers - 1876: Alexander Graham Bell invented the first loudspeaker for the telephone. ● - 1925: Edward W. Kellogg and Chester W. Rice developed the moving-coil loudspeaker. ● - 1950s: Introduction of high-fidelity (Hi-Fi) speakers. ● - 2000s: Rise of wireless and smart speakers. ● Types of Speakers - **Woofers**: Low-frequency (bass) sounds ● - **Tweeters**: High-frequency sounds ● - **Subwoofers**: Ultra-low pitch frequencies ● - **Mid-range Speakers**: Medium frequencies ● - **Full-range Speakers**: Cover all frequencies ● - **Smart Speakers**: AI-powered (e.g., Alexa, Google Home) ● Basic Components of a Speaker - **Magnet**: Creates a magnetic field ● - **Voice Coil**: Moves in response to electrical signals ● - **Diaphragm (Cone)**: Vibrates to produce sound waves ● - **Suspension (Spider)**: Keeps the coil centered ● - **Speaker Frame (Basket)**: Holds all components together ● How a Speaker Works 1. Electrical signals pass through the **voice coil**. ● 2. The coil interacts with the **magnetic field**, causing it to move. ● 3. The **diaphragm (cone)** moves back and forth, creating sound waves. ● 4. The **sound waves** travel through the air, reaching our ears. ● Uses of Speakers in Daily Life - Home entertainment systems (TVs, music players) ● - Smartphones and computers ● - Public announcement systems ● - Car audio systems ● - Smart home devices (Alexa, Google Home) ● - Professional audio setups (concerts, theaters) ● Conclusion ● Speakers are an essential part of modern life. From home entertainment to AI-powered assistants, they continue to evolve. Advancements in sound technology promise even better audio experiences in the future! Thank You! ANY QUESTIONS?
