Perceptual relevance of the temporal envelope to the speech signal in the 4-7 kHz band.
The perceptual relevance of adopting the temporal envelope to model the frequency band of 4-7 kHz (highband) in wideband speech signal is described in this letter. Based on theoretical work in psychoacoustics, we find out that the temporal envelope can indeed be a perceptual cue for the high-band signal, i.e., a noiseless sound can be obtained if the temporal envelope is roughly preserved. Subjective listening tests verify that transparent quality can be obtained if the model is used for the 4.5-7 kHz band. The proposed model has the benefits of offering flexible scalability and reducing the cost for quantization in coding applications.
Kim
Kyung Tae
KT
Choi
Jeung-Yoon
JY
Kang
Hong Goo
HG
D001307:Auditory Perception / Q000502:physiology*; D006309:Hearing / Q000502:physiology*; D006801:Humans; D008954:Models, Biological; D010470:Perceptual Masking; D011571:Psychoacoustics; D013018:Sound Spectrography; D013060:Speech / Q000502:physiology*; D013065:Speech Intelligibility; D013067:Speech Perception / Q000502:physiology*