Audio - acoustics animations, java applets, flash related subject:
Physics: sound java applets and
animations |
Active Filters
with operational amplifiers Design of active filters with operational
amplifiers |
Acoustics and
vibration animations animations which visualize certain concepts concerning acoustics and vibration |
Akustische Täuschungen
in German |
Amplitude and Frequency Vibrato Amplitude vibrato is amplitude modulation
(AM) in which the loudness fluctuates with a frequency of 1 to 10Hz. Frequency
vibrato is frequency modulation (FM) in which the pitch fluctuates with a
frequency of 1 to 10Hz |
Comment fonctionne un amplificateur? en Français |
Decibel
size the highest frequency that can be produced without aliasing problems
is ~3500Hz, sound level is changed with successive steps of -10dB, -3dB, -5dB |
Die
Tonleiter des Pythagoras |
Diatonic scale
Pythagorean tuning of the diatonic scale works well for monophonic music, ... |
Digital filter applets
IIR Filter's Response, FIR Filter's Response, Design Low Shelve, High Shelve,
Peaking, Notch filters, Design equalizers by Window Function Algorithm,
Calculate spectrum, Generate sine, cosine, square and triangle waves, CR
Filter's Response (Analog), Step and Impulse Response (Analog), Put Laplace
transfer function |
Digital filters applet
this java applet is a demonstration of digital filters. You should hear a noise
waveform when the applet starts up |
Digital filters applet
Digital filters applet, IIR digital filter design applet |
Digital filters applet
Digital filters applet, This is an applet that allows you to design digital
filter graphically |
Digital signal
processing and filters DSP java applets |
Discrete
time Fourier series you can enter the magnitude and phase spectra with the mouse, and then observe the phasor
frequency components and the generation of the signal from these frequency components. For the second applet you can enter a value of N between 4 and 32, and then enter
either a signal or the frequency spectra. Only one period of the signal and one repetition of the spectra are shown |
DSP
editor
an online DSP laboratory for education. Offers an online simulation enviroment for the engineering student |
DTMF TouchTone sounds |
DTMF Touch Tone Dialling |
DTMF keypad
Touch Tones |
DTMF
(Dual-Tone Multi-Frequency) tones
DTMF (Dual-Tone
Multi-Frequency) tones |
DTMF Tone Generator Java Phone Dialer. This Java applet will play touch-tone
sounds when you press the buttons. Hold your telephone receiver close to the
speaker, and you can actually dial a phone number |
DTMF Tone
Generator Applet The applet generates DTMF (Dual Tone Multi-Frequency) tones
as used on TouchTone phones |
Equal loudness tester
this site allows you to measure equal loudness curves--the frequency response of your own ears. The flash script allows you to play sound files with a range of
frequencies and sound levels with the click of a mouse |
ESL animation
electrostatic loudspeaker animation |
Experiments in psycho-acoustics |
Filtres de Rauch
HPF, LPF, BPF,
en Français |
Filtres de Sallen et Kay
en Français,
HPF, LPF, BPF |
Filtres passifs (exemples)
Wien, Colpitts, RC, T filtre, en Français |
FIR
Digital Filter Demo applet |
Fourier Fourier Synthesis, A periodic signal can be described by a Fourier
decomposition as a Fourier series, i. e. as a sum of sinusoidal and cosinusoidal
oscillations, ... |
Fourier analysis Flash |
Fourier approximations and music |
Fourier
en Français, Séries de Fourier
en Français |
Fourier
fourier synthesis, you can change the magnitude of each Fourier functions,
sound effect |
Fourier
decomposition building a wave shape from sines and cosines |
Fourier series
the user may choose the first 21 coefficients of a Fourier series by means of
scroll bars and look at the graph of the resulting function |
Fourier
series approximation Java applet that displays Fourier series
approximations and corresponding magnitude and phase spectra of a periodic
continuous-time signal |
Frequenties combineren en luisteren
Fourier, in Dutch |
Fundamental &
overtones the fundamental and first three overtones of a vibrating system |
Filter
java experiments
low pass filter, high pass filter, RC integrator, RC differentiator, resonant filter |
Harmonic series
the first 20 partials of a harmonic series for the fundamental pitch C2 (ca.
65.4 Hz.) expressed in traditional musical staff notation with frequency
multiples indicated between the staves |
Interactive digital filter design |
Linear and logarithmic scales This demonstration compares ascending linear
and logarithmic musical scales |
Listen to Fourier
series needs real audio player |
Listen to
Fourier series |
Loudspeaker
animated diagram of the loudspeaker |
Loudspeakers
How a speaker works, Loudspeakers |
Loudspeakers
How a speaker works, The coil generates a magnetic field that switched its
polarity (north and south) when alternating current passes into it. The changes
alter the attraction or repulsion of the coil magnet to the permanent magnet
causing the coil magnet to move. The movement of the coil causes a diaphragm to
move which creates the sound waves we hear |
Loudspeaker
animation Animated example of how dipolar speakers work and what makes a
push pull speakers work. Everything You Wanted To Know About Speakers |
Loudspeaker
animation ACOUSTIC WAVES,
Generation of acoustic waves by loudspeaker |
Loudspeaker
animation
An animation of a sound wave illustrating the way a sound wave
propagates |
Loudspeaker
animation
An animation of a sound wave illustrating the way a sound wave
propagates, longitudinal wave |
Microphone
patterns Microphone patterns,
swf file |
Microphone
applications Echo Canceling Microphone, swf file |
Microphone Microphone animation, click on Description |
Multimedia approach
to the harmonic series |
Noise
Noise is unwanted sound. Noise can be produced by many sources - man's
vocal cord, a running engine, a vibrating loudspeaker diaphragm, an operating
machine tool, and so on. Click on the demo buttons and you will hear the noise
from different sources |
Notch Filter |
Ohm's
Law of Hearing Ohm's law of hearing states that our brain's do not process
phase information for slowly varying sounds but does respond to changes in
amplitude and frequency, ... |
Primary
Beats and Combination Tones
When two sine waves of equal amplitudes but
different frequencies are played simultaneously, several interesting sounds can
be heard |
Push pull amplifier Push pull amplifier |
RC
filter respons Circuits An applet to calculate Frequency and Step response
for CR Filter |
Sampling and
reconstruction of periodic signals
This applet explains the sampling of a
continuous signal and the reconstruction of this signal from its samples |
Sampling and discrete
time Fourier transform
the first step in obtaining a signal for DSP is to
sample an analog signal eg instrumentation, audio or video signal. Technically
this usually involves a sample and hold and A/D converter, Discrete Time Fourier
Transform (DTFT) |
Seeing
with your ears
java demonstration of an auditory display for vision substitution. Includes image sonification and spectrogram generation |
Signal
sampling at various sampling frequencies Java applet for signal sampling
at various sampling frequencies, and signal reconstruction from samples using
various low-pass filter cutoff frequencies |
Standard twin feeder loudspeaker cable |
Time
domain vs. frequency domain
3-d plot of frequency, amplitude and time shows the fundamental of a sine wave and up to 3 harmonics, as they are formed
by rotating vectors |
Temperament
brief introduction to the physics and psychophysics of music,
with an emphasis on temperament, the relationship between notes,
Flash |
Text To Speech |
Tone generator |
Twin feed properties
the basic properties of a standard twin feeder
loudspeaker cable |
Twin-T Filter |
Vibrato- amplitude and frequency Amplitude vibrato is amplitude modulation
(AM) in which the loudness fluctuates with a frequency of 1 to 10Hz. Frequency
vibrato is frequency modulation (FM) in which the pitch fluctuates with a
frequency of 1 to 10Hz |
Virtual pitch
A periodic complex waveform is the sum of sine waves that
comprise a harmonic series whose fundamental frequency (first harmonic) has the
same period as the complex wave, ...., brain senses a frequency that is not
present in the original wave |
Vowels A formant is a broad resonance produced by the pharynx and oral
cavity. By following the peak frequencies as a series of vowels are elided, one
can identify the lowest three formants for each sung vowel |
|
Musical Instruments related subject:
Physics: sound java applets and
animations |
Beats |
Guitar A String Applet This applet allows you to hear the two open A string
notes discussed in the Guitar Overtones section |
Guitar Common
Scales virtual guitar, swf file |
Guitar Vibrational modes of an acoustic guitar |
Guitar Vibrational modes of an electric guitar study the vibration of an electric guitar in order to determine its natural frequencies and mode shapes |
Guitar
Play Guitar, swf file |
Guitar
Play Guitar, swf file |
Guitar Guitar
tuner |
Guitar |
Guitar
Strings |
Guitar
tuner custom guitar tuner |
Harmonics
applet
The Harmonics Applet allows you to play with harmonics to produce
instrument sounds similar to the sounds real instruments make. This applet takes
the place of an electric synthesizer |
Interactive
exploration of the science of guitar music in Flash
format |
Interaktives akustiklabor hier können sie mit hilfe
eines tongenerators testen, wie sich töne auf verschiedene klangkörper auswirken, in German |
Musical Instruments |
Piano
play the piano and study the corresponding notes and frequencies |
Piano
play the piano and study the corresponding notes and frequencies |
Piano
play the piano, piano and keyboard |
Piano |
Piano |
Piano |
Play a Piano /
Synthesizer / Oscilloscope As you play the piano, you'll see the wave forms
as well as hear them. The piano can also play a song for you, while you watch |
Schwebungen- oder im Reich der Klavierstimmer
in German |
Sound field radiated by a
tuning fork Sound field
radiated by a tuning fork |
Vibration of the
bowstring swf file |
Vibration of
closed pipe It is a transverse wave display of the fundamental vibration,
three time vibration, and five time vibration of the closed pipe as the
compressional wave, swf file |
Synthesizer
in German |
Horizontaal |
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Last updated on:
2011-01-02
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