Table 1 The five acoustic classes defined for evaluation
Class | Description |
|---|---|
Speech [sp] | Clean speech from a close microphone without any kind of background sound |
Music [mu] | Music is understood in a general sense |
Speech over music [sm] | Overlapping of speech and music classes or speech with noise in background and music classes |
Speech over noise [sn] | Speech which is not recorded in studio conditions, or it is overlapped with some type of noise (applause, traffic noise, etc.), or includes several simultaneous voices (for instance, synchronous translation) |
Other [ot] | This class refers to any type of audio signal (including silence and noises) that does not correspond to the other four classes |