Thursday, 19 June 2014 15:56
H1-31: SOUND LEVEL METER
Additional Info
- ID Code: H1-31
- Purpose: Demonstrate use of a sound level meter.
- Description: Several loud sources can provided upon request, including musical instruments, noisy laboratory apparatus, and a portable audiotape machine with earphones. You can also invite students to bring up their own devices to test. It is surprisingly easy to get over 100dB in earphones. The sound level meter can viewed by a TV camera and displayed on the main screen.
- Availability: Available
- References: REFERENCES: (PIRA 3C30.22) See Demonstration Reference File for a copy of the manual for the meter, a copy of which is kept with the meter.
Published in
H1 Nature of Sound
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H1-01 BELL IN VACUUM
Demonstrates sound wave requirement for a medium
Read More
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H1-02 SPEAKER AND CANDLE
Demonstrates longitudinal behavior of sound waves
Read More
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H1-03: BELLS
Use bells as a sound source Read More
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H1-04: BELL IN VACUUM - PORTABLE
Small version of the standard bell in vacuum demonstration Read More
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H1-11: MICROPHONE AND OSCILLOSCOPE
Show the wave shape of various sounds Read More
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H1-12: VISIBLE WAVEFORMS ON LARGE SPEAKER
Show the loudspeaker motion produced by waves of various shapes Read More
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H1-13 WAVEFORM GENERATOR, SPEAKER AND OSCILLOSCOPE
Demonstrates waveform and sound of standard waves
Read More
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H1-21: SPEED OF SOUND - PHASE CHANGE
Determine the speed of sound Read More
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H1-22: SPEED OF SOUND - USING PULSES
Determine the speed of sound in air Read More
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H1-24: SPEED OF SOUND IN HELIUM
Determine the speed of sound as a function of gas density Read More
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H1-25: SPEED OF SOUND BETWEEN TWO MICROPHONES
Measure the speed of sound by determining the travel time of a pulse between two microphones Read More
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H1-26: SPEED OF SOUND IN GARDEN HOSE
Direct measurement of the speed of sound in air Read More
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H1-27: SPEED OF SOUND - LISSAJOUS FIGURES
Measurement of the speed of sound in air using Lissajous figures Read More
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H1-31: SOUND LEVEL METER
Demonstrate use of a sound level meter Read More
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H1-32: WAVETEK AND AUDIO CART - EQUAL SOUND LEVEL STEPS
Illustrate the effect on the ear of successive changes of exactly 10 dB Read More
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H1-41: ULTRASONIC MOTION DETECTOR
Demonstrate how an ultrasonic motion detector works Read More
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H1-43: ULTRASONICS AND HEARING
Demonstrate that there exist ultrasonic waves with frequencies above the range of human hearing Read More
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H1-44: ULTRASONIC MOTION DETECTOR WAVE FORM
Show the wave form of the ultrasonic signal created by the ultrasonic motion detector Read More
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H1-51: AUDIOTAPE 42 MIN - SCIENCE OF SOUND - SHORT VERSION
Illustrate various audio phenomena Read More
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H1-52: AUDIOTAPE 82 MIN - SCIENCE OF SOUND - LONG VERSION
Illustrate various audio phenomena Read More
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H1-53: AUDIOTAPE 8 MIN - WOMB SOUNDS
Hear heartbeats Read More
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