Perception Laboratory

At the six interactive touch-screen terminals, you now have the chance to experiment for yourself. Put on the headphones and touch the screen with your finger. Select a language. Tap the bottom right of the screen to adjust the volume.

Wall of light

Auditory phenomena can be seen and heard on the large wall of light - opposite the six terminals. Text appears and words form themselves into sentences and meaningful structures.

1. Terminal – pitch

Here, you can try for yourself what you previously learnt in the frequency tube. The frequency corresponds to the number of wave repetitions per second. This is shown in Hertz (Hz). As the frequency increases, the pitch will rise. Human hearing has both upper and lower limits, ranging from around 16 to 20,000 Hertz, although this varies from person to person, and the ability to hear high frequencies diminishes with age.

2. Terminal – volume

Noise displaces air particles. The greater its intensity, the further the particles are "deflected" from their resting point. The pressure amplitude is generally used to determine the volume; measured in decibels (dB). The lower auditory threshold is between 0dB and 1dB; the upper auditory threshold is 130dB, the pain threshold of the human ear. Sound of over 80dB is perceived by many people as noise and can cause permanent hearing loss.

3. Terminal – spatial perception

Walking through a virtual pyramid, sphere, concert hall and mountains illustrates the different acoustic aspects of spaces. You can tonally conquer spaces using your own voice.

4. Terminal – Shepard scale

The Shepard scale, named after the American psychologist, Roger Shepard, is a chromatic scale with no beginning or end. The impression of an infinitely progressive scale is created by playing four parallel scales in four different octaves. As the fourth scale approaches the highest octave, it's slowly faded out, whilst the first scale joins the lowest octave.

5. Terminal – virtual tones

The interaction of several sine tones produces "ghost tones" in your ears, allowing you to experience to what extent our "objective" reality is a reconstruction of our subjective perception.

6. Terminal – time lapse

In this phenomenon of self-circumvention, the senses are shaken up and then re-balanced.