The Interactive Audio Lab

Welcome to the Interactive Audio Lab, headed by Bryan Pardo. We are in the Electrical Engineering and Computer Science Department of Northwestern University . We apply machine learning, signal processing, natural language processing, and database search techniques to make new auditory tools and interfaces.

Current Projects

A music search engine you can sing to
Audio Imputation
Estimate missing information in audio
Spatial Source Separation
Amplify sounds coming from a particular direction
Separation by repetition, by repetition, by repetition, ...
Adaptive User Interfaces
Don't learn the tool, let the tool learn you
Separate music sources in real time with the help of a musical score
Score Alignment
Learn about the music
Music Story
Make videos from music
Multi-pitch Estimation & Streaming
Track more than one pitch at once

Demos and Products

  • SynthAssist is a tool for programming audio synthesizers using using similar example recordings, such as vocal imitations. Watch a video here.
  • Mixploration is an audio mixing tool for finding diverse mixes. Watch a video here.
  • Just sing to Tunebot to find your song.
  • SocialEQ is a tool that learns the meaning of sound adjectives from you.
  • Toneboosters released TB EZQ, a zero-latency, VST-plugin implementation of our 2DEQ audio equilizer.

Data Sets


  • March 2014
    The Midwest Music Information Retrieval Gathering (MMIRG 2014) will be hosted by our lab on Saturday, June 14, 2014
  • June 13 2013
    Mark Cartwright presents research at Telecom ParisTech
  • June 10 2013
    Zafar Rafii starts internship at Gracenote.
  • Jun 3 2013
    Zhiyao Duan successfully defends his PhD dissertation. He will start work as an assistant professor in the ECE department of University of Rochester in July. Congratulations, Zhiyao!
  • June 2012
    Jinyu Han graduates with his PhD and starts work at Gracenote. Congratulations, Jinyu!