LAB 12 Suono

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Brand: Lab 12

Objective: To understand the concept of sound, its generation, transmission, and perception using simple experiments.Materials Required:- tuning forks- rubber bands- long rubber tube- metallic chime- whistle- cardboard box- hearing trumpetExperiments:1. Sound Generator:a. Take two tuning forks and strike one of them. Place the other tuning fork near the first one without touching it. The second tuning fork is heard ringing due to vibrations generated by the first tuning fork. This experiment demonstrates resonance.b. For further experiments rub a tuning fork with a soft cotton cloth until it vibrates. Place the tuning fork near an empty glass containing a small volume of water, and enough water will flow into the glass due to the sound waves.2. Sound Transmission:a. Strike a chime and hold it near your ear, and afterward, move gradually. The sound fades off as the distance from the chime increases. It shows how sound travels in waves through a medium.b. Take a long rubber tube and cover one end with your hand. Blow into the open end and move away from the covered end, and notice how the sound fades off. This experiment shows how sound travels in waves.3. Sound Reflection:a. Take a cardboard box and make a square opening in one of the walls. Clap your hands near the opening and listen to the sound. Take a pencil or a ruler and hold it at the opening's border. Again clap your hands nearby and listen to the sound reflected by the edge. This experiment illustrates how sound waves reflect when they meet an obstruction.4. Sound Absorption:a. Take a metallic chime and strike it with a soft rubber hammer. Measure how much sound is generated and record the decibels level. Now wrap a blanket around the chime to muffle the sound and again measure the decibels level. This experiment shows how sound waves absorb upon meeting barriers.5. Human Perception of Sound:a. Take the hearing trumpet, which is an amplifier device that amplifies sounds. Close your eyes and place the hearing trumpet near an ear. Speak inside the end of the trumpet, and the listener should hear the voice amplified.b. Clap Your Hands and while the sound is ringing, cover one ear with your palm and notice how loudly you can hear sound with the uncovered ear. This simple experiment demonstrates how humans perceive sounds separately in each ear.Conclusion:These experiments provide basic scientific concepts related to the study of sound. Many practical applications like hearing appliances, musical instruments, and vibration sensing rely on the same principles studied in these experiments. These experiments aim to demonstrate their applications in daily life while instilling a passion for science among young learners.

Power Output: 25W into 8Ω (stereo)
Frequency Response: 20Hz to 20kHz
Distortion:
Speaker Impedance: 4 to 8Ω
Input Sensitivity:
Signal to Noise Ratio:
Dimensions: 430 x 190 x 290 mm
Weight: 17 kg
Year: 2015
Price: