Illustration of fluid particle displacement as a pulse travels down a tube - allows adjustment of pulse amplitude, frequency and speed.
Live display of waveform from microphone input.
An alternative verion of above.
Select a tone frequency and play it out - adjust the level as required.
Live display of waveform and spectrum from microphone input.
Comparison of waveform, spectrum and spectrograms.
Demonstration of how adding sine-waves of appropriate amplitudes, frequencies and phases can produce more complex periodic waveforms
Frequency response of a mass, stiffness & damping system.
The effect of changes in the dimensions of a Helmholtz resonator on the frequency response.
The effect of changes in ear canal pressure on the transfer function of a system such as the middle ear - change the canal pressure to see the admittance change.
The effect of changes in ear canal pressure on the different components measured in tympanometry.
This simulation allows you to see the relationship between the 4 different types of measurement curve with a linear hearing aid.
This simulation allows you to see the relationship between the 4 different types of measurement curve with a nonlinear hearing aid.
This simulation allows you to see the relationship between overall level, spectrum level and bandwidth of a signal.
This simulation allows you to see the interaction of different spectrum shapes with the output and gain of a nonlinear hearing aid.
This simulation allows you to see the interaction between hearing aid volume control, ear-mound features and the likelihood of feedback.
This animation give a schematic illustration of a cochlear travelling wave.
Auditory filter shapes derived from notched-noise masking measurements by Baker and Rosen (2006)
Auditory filter shapes derived from notched-noise masking measurements, expressed as gain (from Baker and Rosen, 2006)
A web page to demonstrate harmonic and intermodulation distortion with even- and odd-order nonlinearities.
Demonstration of Receiver Operating Characteristics (ROC) and how it, and the d' changes as the parameters change