feat: speed up fbank's lfr (#2246)

Tang Linjie

2024-11-30 8b1be8c3cba8987e9993619b46e59039ef3d6560

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wget https://isv-data.oss-cn-hangzhou.aliyuncs.com/ics/MaaS/ASR/dep_libs/ffmpeg-N-111383-g20b8688092-linux64-gpl-shared.tar.xz
tar -xvf ffmpeg-N-111383-g20b8688092-linux64-gpl-shared.tar.xz