Pitch characteristics of bone conducted speech

This paper investigates the pitch characteristics of bone conducted speech. Pitch determination of speech signal can not attain the expected level of accuracy in adverse conditions. Bone conducted speech is robust to ambient noise and it has regular harmonic structure in the lower spectral region. These two properties make it very suitable for pitch tracking. Few works have been reported in the literature on bone conducted speech to facilitate detection and removal of unwanted signal from the simultaneously recorded air conducted speech. In this paper, we show that bone conducted speech can also be used for robust pitch determination even in highly noisy environment that can be very useful in many practical speech communication applications like speech enhancement, speech/speaker recognition, and so on.

[1]  Kenji Kimura,et al.  A Study on Restoration of Bone-Conducted Speech with MTF-Based and LP-Based Models (Special Issue on Nonlinear Circuits and Signal Processing) , 2006 .

[2]  Xuedong Huang,et al.  Air- and bone-conductive integrated microphones for robust speech detection and enhancement , 2003, 2003 IEEE Workshop on Automatic Speech Recognition and Understanding (IEEE Cat. No.03EX721).

[3]  T. Shimamura,et al.  Improving Bone-Conducted Speech Quality via Neural Network , 2006, 2006 IEEE International Symposium on Signal Processing and Information Technology.

[4]  Phuong K. Tran,et al.  Bone conduction microphone: Head sensitivity mapping for speech intelligibility and sound quality , 2008, 2008 International Conference on Audio, Language and Image Processing.

[5]  Maranda McBride,et al.  Using the Callsign Acquisition Test (CAT) to compare the speech intelligibility of air versus bone conduction , 2007 .

[6]  Zicheng Liu,et al.  Direct filtering for air- and bone-conductive microphones , 2004, IEEE 6th Workshop on Multimedia Signal Processing, 2004..

[7]  Zicheng Liu,et al.  Leakage model and teeth clack removal for air- and bone-conductive integrated microphones , 2005, Proceedings. (ICASSP '05). IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005..

[8]  Hajime Kobayashi,et al.  Weighted autocorrelation for pitch extraction of noisy speech , 2001, IEEE Trans. Speech Audio Process..

[9]  T. Shimamura,et al.  A reconstruction filter for bone-conducted speech , 2005, 48th Midwest Symposium on Circuits and Systems, 2005..

[10]  Herbert J. Oyer.  Relative Intensities of Sounds at Various Anatomical Locations of the Head and Neck during Phonation of the Vowels , 1957 .

[11]  Wei Chen,et al.  A Robust Speech Enhancement Scheme on The Basis of Bone-conductive Microphones , 2007, 2007 3rd International Workshop on Signal Design and Its Applications in Communications.

[12]  K. Nakagawa,et al.  On Equalization of Bone Conducted Speech for Improved Speech Quality , 2006, 2006 IEEE International Symposium on Signal Processing and Information Technology.