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Table 2 Results of AN4 batch tests at SNR of ~6.7 dB

From: Development of an automated speech recognition interface for personal emergency response systems

  Single Microphone Beamforming
Words Played 1846 1846
Total Errors 1302 924
   Substitutions 401 371
   Insertions 16 7
   Deletions 885 546
Accuracy 29.5% 49.9%