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

Tang Linjie

2024-11-30 8b1be8c3cba8987e9993619b46e59039ef3d6560

 funasr/frontends/default.py

@@ -20,6 +20,7 @@


@tables.register("frontend_classes", "DefaultFrontend")
@tables.register("frontend_classes", "EspnetFrontend")
class DefaultFrontend(nn.Module):
    """Conventional frontend structure for ASR.
    Stft -> WPE -> MVDR-Beamformer -> Power-spec -> Mel-Fbank -> CMVN