Fig. 4From: Speech intelligibility improvement in noisy reverberant environments based on speech enhancement and inverse filteringSpectrogram comparison. a clean speech, b noisy speech (SNR = − 5 dB), c reverberant speech (T60 = 3.57 s), d noisy and reverberant speech (SNR = − 5 dB, T60 = 3.57 s), and e reinforcement and dereverberation speech (SNR = − 5 dB, T60 = 3.57 s)Back to article page