TY - GEN
T1 - Modelling correlation of an ensemble
AU - Smith, F. J.
AU - Ming, J.
AU - Hanna, P.
AU - Stewart, D.
PY - 1999/1/1
Y1 - 1999/1/1
N2 - Two methods have been derived for modelling of uncertain correlation in an ensemble of quantities. One is designed for an unordered ensemble and is valid for Gaussian and non-Gaussian distributions, the second is designed for a Markov sequence, and is valid for a Gaussian distribution. When applied to speech the results for the first method based on an unordered ensemble demonstrate that the traditional assumption in speech that the correlation between frames can be neglected is invalid. The correlation is on average is close to 80% of the maximum possible correlation between the frames. This application demonstrates that this method can be used effectively to solve problems when correlation in an ensemble is important, but is unknown.
AB - Two methods have been derived for modelling of uncertain correlation in an ensemble of quantities. One is designed for an unordered ensemble and is valid for Gaussian and non-Gaussian distributions, the second is designed for a Markov sequence, and is valid for a Gaussian distribution. When applied to speech the results for the first method based on an unordered ensemble demonstrate that the traditional assumption in speech that the correlation between frames can be neglected is invalid. The correlation is on average is close to 80% of the maximum possible correlation between the frames. This application demonstrates that this method can be used effectively to solve problems when correlation in an ensemble is important, but is unknown.
UR - http://www.scopus.com/inward/record.url?scp=85039952842&partnerID=8YFLogxK
U2 - 10.1109/HOST.1999.778756
DO - 10.1109/HOST.1999.778756
M3 - Conference contribution
AN - SCOPUS:85039952842
T3 - Proceedings of the IEEE Signal Processing Workshop on Higher-Order Statistics, SPW-HOS 1999
SP - 349
EP - 352
BT - Proceedings of the IEEE Signal Processing Workshop on Higher-Order Statistics, SPW-HOS 1999
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 1999 IEEE Signal Processing Workshop on Higher-Order Statistics, SPW-HOS 1999
Y2 - 14 June 1999 through 16 June 1999
ER -