Sound changes when the sound source is moved. If a dancer moves in a sound field, this can be perceived acoustically. The SI V.5 project uses 5 listening tests, each with 15 listeners in 5 different rooms, to investigate the perceptibility of this effect. The influence of seating position and room acoustics is being investigated.
The sound from an oscillating loudspeaker changes considerably: the Doppler effect (frequency shift) and amplitude change occur. Due to the spatial movement, the loudspeaker radiates the sound into the room on the segment of a circular path. This changes the reflection points in the room and creates a complex sound field that is always in motion.
The inclusion of a dancer has revealed the following phenomenon: The movement of a body in a sound field can be perceived acoustically (change in amplitude, Doppler effect lying below the JND).
The following questions take centre stage:
- Influence/interaction between space, movement, body and sound in combinations of stationary/moving sound source and stationary/moving body.
- Effects and audibility of different sounds (sine tone, standing wave, noise, instrumental sound)
- What is the simultaneous auditory impression of the room acoustics at different positions in the room depending on the position of the sound source or the dancer's body, with and without movement?
- What is the auditory impression of moving sound sources in connection with a standing and/or moving body in different rooms?
- Five listening tests will be carried out in five different rooms, each with 15 test subjects.
The results of the listening tests should serve as an aid to achieving optimum audibility of this effect in artistic applications.