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Sound Reproduction


G3-31: Spring and Horns

Purpose: To audibly illustrate transmission of energy in a mechanical wave

K5-02: PIEZOELECTRIC CRYSTAL - AUDIBLE

Purpose: Demonstrate that a piezoelectric crystal converts electrical impulses into physical vibrations.

J7-24: BARKHAUSEN EFFECT

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.

H1-53: AUDIOTAPE 8 MIN - WOMB SOUNDS

Category: H1 Nature of Sound

Purpose: Hear heartbeats.

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

Purpose: Demonstrate standing waves in an air column.

H2-33: SPEAKER AND EXPONENTIAL HORN

Purpose: Demonstrate the effect of an exponential horn enclosure.
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