def METHOD_NAME(self, hs_pad):
    """argmax of frame activations
    Args:
        torch.Tensor hs_pad: 3d tensor (B, Tmax, eprojs)
    Returns:
        torch.Tensor: argmax applied 2d tensor (B, Tmax)
    """
    return torch.METHOD_NAME(self.ctc_lo(hs_pad), dim=2)