大家有尝试过k2中的PR：Support CTC/AED option for Zipformer recipe

PR 链接：https://github.com/k2-fsa/icefall/pull/1389
请问大家有尝试过如上 yaozengwei 的方案吗？Zipformer-L 174.3M 模型？
请问精度可信吗？

=====================如下为 PR 精度
This PR supports CTC/AED system for zipformer recipe.

CTC/AED results on LibriSpeech, trained for 50 epochs (--ctc-loss-scale=0.1, --attention-decoder-loss-scale=0.9), decoding method: sample 100-best paths from CTC lattice and rescore with the attention decoder
Zipformer-S, 46.3M, 2.46 / 6.04
Zipformer-M, 90.0M, 2.22 / 4.97
Zipformer-L, 174.3M, 2.09 / 4.59