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ECG data compression by sub-band coding

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3 Author(s)
Aydin, M.C. ; Dept. of Electr. & Electron Eng., Bilkent Univ., Ankara, Turkey ; Cetin, A.E. ; Koymen, H.

A data compression technique is presented for discrete-time electrocardiogram signals. The single lead electrocardiogram signal is decomposed into several multiresolution subsignals by using a quadrature mirror filter bank. The resultant subsignals are compressed according to their frequency contents using various coding methods, including a discrete cosine transform based technique and pulse code modulation with variable length coding. Compression ratios as high as 5.7 are obtained without introducing any visual distortion.

Published in:

Electronics Letters  (Volume:27 ,  Issue: 4 )

Date of Publication:

14 Feb. 1991

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