Sound Reproduction
G3-31: Spring and Horns
Category: G3 Mechanical Waves - One Dimensional
Purpose:
To audibly illustrate transmission of energy in a mechanical wave
K5-02: PIEZOELECTRIC CRYSTAL - AUDIBLE
Category: K5 Electrical Properties of Matter
Purpose:
Demonstrate that a piezoelectric crystal converts electrical impulses into physical vibrations.
J7-24: BARKHAUSEN EFFECT
Category: J7 Magnetic Materials
Purpose:
Demonstrate flipping of magnetic domains in iron.
H4-92: AUDIO RECORDING - DIGITAL DOMAIN DEMONSTRATION CD
Category: H4 Music
Purpose:
Examples of early digital sound reproduction.
H4-81: AUDIO CART - COMPLETE AUDIO SYSTEM
Category: H4 Music
Purpose:
Show the various components of a reasonably modern audio system.
H4-68: MP3 COMPRESSION
Category: H4 Music
Purpose:
Play and compare various MP3 compressions of a short musical CD excerpt.
H4-67: CD WITH HOLE
Category: H4 Music
Purpose:
See if a compact disc will play even if it has a small hole drilled through it.
H4-66: CROSSOVER NETWORK - LARGE ADVENT
Category: H4 Music
Purpose:
Show circuit and components of a passive crossover network and how the crossover network functions.
H4-65: CROSSOVER NETWORK FOR SPEAKERS
Category: H4 Music
Purpose:
Demonstrate the operation af a crossover network.
H4-64: DISTORTION IN AUDIO AMPLIFIER
Category: H4 Music
Purpose:
Demonstrate distortion due to over-driving an audio ampiflier.
H4-58: MODULATION - AM RADIO
Category: H4 Music
Purpose:
Show amplitude modulation in in AM radio signals.
H4-56: SYNTHESIZER INTRODUCTION - VOLTAGE CONTROL OF FREQUENCY
Category: H4 Music
Purpose:
Illustrate a voltage-controlled frequency device.
H4-52: SPECTRUM ANALYSIS OF MODULATION
Category: H4 Music
Purpose:
Compare and analyze the frequency spectra of various modulated sounds such as tremolo, vibrato, and beats.
H4-51: MODULATION - AM AND FM
Category: H4 Music
Purpose:
Demonstrate AM and FM signal modulation as an introduction to vibrato and tremolo.
H1-32: WAVETEK AND AUDIO CART - EQUAL SOUND LEVEL STEPS
Category: H1 Nature of Sound
Purpose:
Illustrate the effect on the ear of successive changes of exactly 10 dB.
H1-12: VISIBLE WAVEFORMS ON LARGE SPEAKER
Category: H1 Nature of Sound
Purpose:
Show the loudspeaker motion produced by waves of various shapes.
H1-11: MICROPHONE AND OSCILLOSCOPE
Category: H1 Nature of Sound
Purpose:
Show the wave shape of various sounds.
H3-05: KUNDT'S TUBE - OSCILLATOR DRIVEN
Category: H3 Standing Sound Waves
Purpose:
Demonstrate standing waves in an air column.
H2-33: SPEAKER AND EXPONENTIAL HORN
Category: H2 Wave Properties of Sound
Purpose:
Demonstrate the effect of an exponential horn enclosure.