Abstract
Reverberation is a common problem for many speech technologies, such as
automatic speech recognition (ASR) systems. This paper investigates the
novel combination of precedence, binaural and statistical independence
cues for enhancing reverberant speech, prior to ASR, under these adverse
acoustical conditions when two microphone signals are available. Results
of the enhancement are evaluated in terms of relevant signal measures and
accuracy for both English and Polish ASR tasks. These show inconsistencies
between the signal and recognition measures, although in recognition the
proposed method consistently outperforms all other combinations and the
spectral-subtraction baseline.
Go to article