Princeton University  

The Princeton Headphone Open Archive (PHOnA)

This work is sponsored by the Sony Corporation of America

The Princeton Headphone Open Archive (PHOnA) is a dataset of measured headphone transfer functions (HpTFs) from many different research institutions around the world. Extensive studies of HpTFs have been conducted for the past twenty years, each requiring a separate set of measurements, but this data has not previously been shared publicly. PHOnA aggregates HpTFs from different laboratories, including measurements for multiple different headphones, subjects, and repositionings of headphones for each subject. The dataset uses the Spatially Oriented Format for Acoustics (SOFA) for efficiently storing HpTFs. PHOnA is intended to provide a foundation for machine learning techniques applied to HpTF equalization. It is hoped that this shared data will allow optimization of equalization algorithms to provide more universal solutions to perceptually transparent headphone reproduction.

PHOnA can be downloaded here. (1.3 GB, last updated November 18th, 2015)

HpTF Diagram


B. Boren, M. Geronazzo, F. Brinkmann, and E. Choueiri. Coloration metrics for headphone equalization. In Proceedings of the 21st International Conference on Auditory Display, pages 29-34, July 2015. (pdf)

B. Boren, M. Geronazzo, P. Majdak, and E. Choueiri. PHOnA: A Public Dataset of Measured Headphone Transfer Functions. In Audio Engineering Society Convention 137, October 2014. (pdf)