| Audio animations: java applets, flash related subject: Physics: sound java applets and animations |
| Acoustics and vibration animations animations which visualize certain concepts concerning acoustics and vibration |
| Acoustics software and demonstrations |
| 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 |
| Audio Beat Frequencies Demonstrating Audio Beat Frequencies |
| Battements en Français |
| Beats caused by the interference between two waves of nearly equal frequency |
| Beats caused by the interference between two waves of nearly equal frequency |
| Beats Beats (periodic rise and fall in intensity) are produced when two waves of nearly equal frequency are added. The beat frequency is the difference of the two frequencies, while the resultant waveform itself varies at the mean of the two frequencies |
| Beats Primary Beats and Combination Tones, FFT, waveform, frequency difference, frequency discrimination, combination tones |
| Beats sound interrface |
| Beating waves the animation shows how the waves in the top and middle panels add together to create a beat pattern in the bottom panel, beating waves |
| Bells applet: change ringing on the web |
| Comment fonctionne un amplificateur? en Français |
| Comment fonctionne un haut-parleur? en Français |
| Condenser microphone this interactive tutorial shows a cross section of the diaphragm, and how sound waves cause the diaphragm to vibrate at the same frequency as the sound waves |
| 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 |
| Decibels an audio demonstration of decibels. A sound card is required to play the 250Hz tone |
| 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 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 |
| Doppler effect Doppler effect |
| Doppler effect an emergency ambulance with switched on siren passes a person who is standing at the street |
| Doppler effect simulation of the relativistic and non-relativistic Doppler effect. There is also also a tutorial about writing applets |
| Doppler effect 2 Doppler effect |
| Doppler effect 3 |
| Doppler effect 4 |
| Doppler effect the animation represents a cross section of a three-dimensional sound wave propagating away from a moving source |
| Doppler effect with interference Doppler effect with two sources so you can see interference patterns |
| Doppler radar |
| DSP editor an online DSP laboratory for education. Offers an online simulation enviroment for the engineering student |
| 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 |
| Experiments in psycho-acoustics |
| Filtres en Français |
| Filtres de Rauch HPF, LPF, BPF, en Français |
| Filtres de Sallen et Kay en Français, HPF, LPF, BPF |
| Filtre de Wien en Français |
| Filtres passifs (exemples) Wien, Colpitts, RC, T filtre, en Français |
| 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 in Dutch |
| Fundamental & overtones the fundamental and first three overtones of a vibrating system |
| Generation of acoustic wave by loudspeaker |
| 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 |
| How a speaker works most loud speakers consist of a circular permanent magnet surrounding a freely moving coil. The coil is attached to a cone shaped diaphragm that is moved back and forth to produce accoustical waves (sound) |
| Interactive digital filter design |
| Interactive exploration of the science of guitar music in Flash format |
| Listen to Fourier series needs real audio player |
| Listen to Fourier series |
| Longitudinal wave Flash |
| Longitudinal wave Flash |
| Microphone en Français |
| Multimedia approach to the harmonic series |
| Piano play the piano and study the corresponding notes and frequencies |
| 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 |
| Sampling and reconstruction of periodic signals |
| 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 |
| Shock waves source moves with the velocity of sound, source moves with subsonic velocity, source of acoustic waves moves with supersonic velocity |
| Simulation de filtres en Français, a tip |
| 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 |
| Sound beats |
| Sound generator Sound generator |
| Sound wave approximation |
| Sound wave interference explains what happens to the energy of sound waves when the waves interact, Compare and contrast constructive interference and destructive interference |
| Sound waves Flash |
| Standard “twin feeder” loudspeaker cable |
| Standing waves, medium fixed at both ends |
| Schwebungen- oder im Reich der Klavierstimmer in German |
| Somme de fonctions sinusoïdales sons complexes à partir de leurs neuf premiers harmoniques, en Français |
| Superposition of sound waves audio beat frequencies |
| Superposition of two waves two sine waves travelling in the same direction: constructive and destructive interference, two sine waves travelling in opposite directions create a standing wave, superposition of waves, two sine waves with different frequencies: beats |
| Synthesizer in German |
| 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 beats when two sounds are very similar in frequency, you'll hear pulses due to the nature of waves. Try to determine several mystery frequencies |
| Traveling wave |
| Twin feed properties the basic properties of a standard “twin feeder” loudspeaker cable |
| 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 |
Stacy Leachman demiş,
Ocak 14, 2007 @ 8:18
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