code: def pqmf_synthesis(self, x):
      return self.pqmf_layer.synthesis(x)
  
file_path: TTS/TTS/vocoder/models/multiband_melgan_generator.py
imports: import torch
  from TTS.vocoder.models.melgan_generator import MelganGenerator
  from TTS.vocoder.layers.pqmf import PQMF
label_desc: Use image node_id 3 for calling the MultibandMelganGenerator obj's underlying member method code with example usage: obj.pqmf_synthesis(x) and returns: self