class_docstr: Impulse response filtering
code: def metadata(metadata, state):
      # Extend the annotation time
      metadata.duration += state["ir_groupdelay"]
  
file_path: muda/muda/deformers/ir.py
imports: import six
  import numpy
  import pandas
  import scipy
  import soundfile
  import librosa
  import jams
  from ..base import BaseTransformer
label_desc: Use image node_id 2 for calling the IRConvolution obj's underlying member method code with example usage: obj.metadata(metadata, state) without return types