Performance Record Conformer Result (Old IO) Feature info: using fbank feature, with cmvn, with speed perturb. Training info: lr 0.002, batch size 16, 1 machines, 1*4 = 4 gpu, acc_grad 4, 240 epochs, dither 0.1 Decoding info: ctc_weight 0.5, average_num 30 decoding mode attention decoder 21.9 ctc greedy search 21.15 ctc prefix beam search 21.13 attention rescoring 20.47 Conformer Result (New IO) Feature info: using fbank feature, with cmvn, with speed perturb. Training info: lr 0.002, batch size 16, 1 machines, 1*4 = 4 gpu, acc_grad 4, 133 epochs, dither 0.1 Decoding info: ctc_weight 0.5, average_num 30 decoding mode attention decoder 21.42 ctc greedy search 21.16 ctc prefix beam search 21.18 attention rescoring 20.42