Alcons
Alcons (English-language acronym for A rticulation L oss of Cons onants ) denotes the loss of articulation for consonants .
As a measure of the (in) comprehensibility are the Alcon again how high the percentage share of not is correctly understood words or consonants:
| Alcons | 0% - 3% | 3% - 7% | 7% - 15% | 15% - 33% | 33% - 100% |
| excellent (excellent) |
good (good) |
sufficient (fair) |
bad (poor) |
incomprehensible (unintelligible) |
|
| STI | 1.0-0.75 | 0.75-0.6 | 0.6-0.45 | 0.45-0.3 | 0.3-0 |
Different factors are included in the calculation of the Alcon:
- the reverberation time
- the distance between the sound source and the sound receiver
- the volume of the room
- the degree of concentration of the sound source
- the reverb radius .
The reverberation and the directional characteristics of the sound sources are taken into account, but not the background noise (the background noise ).