Key result
Double logarithmic quantisation of the Walsh spectrum achieves 87% success in ECG compression.
Double logarithmic quantisation of the Walsh spectrum provides efficient ECG compression with an 87% success rate for 8-11 bit resolution waveforms.
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May support bit-efficient ECG storage; leaves open prospective clinical validation before adoption.
Berti et al. (1997) studied Arrhythmia. Double logarithmic quantisation of the Walsh spectrum was evaluated on Compression procedure success (MSE < 0.005 for a spectral reduction of 1:1). Double logarithmic quantisation of the Walsh spectrum applied to normal and abnormal ECGs achieved an overall 87% success rate for waveforms stored with 8 to 11 bit resolution.
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