Spatial impression (acoustics)
The spatial impression is a term for a hearing sensation that one has when one has a single sound source such as B. does not hear speakers , singers or individual musical instruments (or many sound sources, e.g. choir or orchestra ) outdoors, but in a room that is closed on several sides (e.g. in a courtyard or a room closed on all sides). One has the impression of being in one room with the sound source (sound transmitter).
In contrast, one believes z. B. in the monophonic sound reproduction by means of a speaker through a hole, in the stereophonic transmission through a window of low height into a room in which you are not yourself. You also get a certain impression of the size of the room.
The reverberation , which is felt as a result of strong, later sound reflections , even when speech and music are continuously exposed, is stronger the further one is from the sound source and the greater the reverberation time for a given room volume . The reverberation radius and the reverberation dimension are important here .
Another possible component of the spatial impression is the spatiality , i.e. the feeling that the room is also filled with sound around the sound sources. After switching off the sound source in a closed room, the missing reverberation outside can be heard, which can only be localized in the part of the room in which the sound source is located.
See also
literature
- Walter Kuhl: Uses acoustic terms in room acoustics . In: Acustica , 39, 1977, page 57.
- Walter Kuhl: Spatiality as a component of the spatial impression . In: Acustica , 40, 1978, p. 167.
- Michael M. Rieländer: Real Lexicon of Acoustics . Erwin Bochinsky, Frankfurt a. M. 1982, ISBN 3-920-11284-9