Adaptive front ends
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Code for the paper "Adaptive Front Ends for end-to-end source separation"


——————————————————— University of Illinois Open Source License

Copyright © 2017, University of Illinois at Urbana Champaign. All rights reserved.

Developed by: Shrikant Venkataramani, Paris Smaragdis University of Illinois at Urbana-Champaign, Adobe Research This work was supported by NSF grant 1453104. Paper link:

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal with the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimers. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimers in the documentation and/or other materials provided with the distribution. Neither the names of Computational Audio Group, University of Illinois at Urbana-Champaign, nor the names of its contributors may be used to endorse or promote products derived from this Software without specific prior written permission. THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE SOFTWARE. ———————————————————

Software requirements:

  • Python v > 3.5
  • Numpy v > 1.12
  • Pytorch v > 0.1
  • Visdom


The paper is available here

Separation examples are available here


Run the following commands in the terminal for running the code:

python3 -f 1024 -hp 16 (separation with sdr cost, 1024 bases and hop 16)

python3 -f 1024 -hp 16 -mse (separation with mean squared error cost, 1024 bases and hop 16)

python3 -f 1024 -hp 16 -dft (separation with sdr cost, 1024 bases and hop 16, fourier bases without adaptive front-end)

Brief Description

Source separation and other audio applications have traditionally relied on the use of short-time Fourier transforms as a front-end frequency domain representation step. The unavailability of a neural network equivalent to forward and inverse transforms hinders the implementation of end-to-end learning systems for these applications.

In this work, we present an auto-encoder neural network that can act as an equivalent to short-time front-end transforms. We demonstrate the ability of the network to learn optimal, real-valued basis functions directly from the raw waveform of a signal and further show how it can be used as an adaptive front-end for supervised source separation.

In terms of separation performance, these transforms significantly outperform their Fourier counterparts. Finally, we also propose a novelsource to distortion ratio based cost function for end-to-end sourceseparation.