Javier Gómez Bolaños, Ville Pulkki

HRIR database with measured actual source direction data

Companion page for a paper submitted to the 133th AES Convention Conference , San Francisco, USA, October 26–29, 2012


A database is presented consisting of head-related impulse responses (HRIR) of 21 subjects measured in anechoic chamber with simultaneous measurement of head position and orientation. The HRIR data for sound sources at 1.35 m and 68 cm and in 240 directions with elevations between +/- 45° and full azimuth range were measured using blocked ear canal method. The frequency region of the measured responses ranges from 100 Hz up to 20 kHz for a flat response (+0.1 dB / -0.5 dB). This data is accompanied with the measured azimuth and elevation of the source respect to the position and orientation of the subject's head obtained with a tracking system based on infrared cameras. The HRIR data is accessible from the Internet.

HRIR Database

The HRIR and azimuth and elevation angles are given as Matlab files inside a .zip file. The frequency rate of the impulse responses is 48 kHz. The angles file contains in order of appearance: the measurement number, the azimuth respect to the far loudspeaker, the elevation respect to the far loudspeaker, the azimuth respect to the near loudspeaker and the elevation respect to the near loudspeaker. The coordinate system has the X-axis pointing to the front, Z-axis to the right and Y-axis upwards. Positive angles follow the right-hand rule and negative angles the left-hand rule (thus positive azimuths occurs when the loudspeaker is in the left side of the head). The HRIR file contains the HRIRs in the following order: left ear and far loudspeaker, right ear and far loudspeaker, left ear and near loudspeaker and right ear and near loudspeaker. The location of the microphones may include errors not larger than 1.5° in the ITD for certain subjects.

The targeted angles are the angles that the turntable and boom arm should reach. The targeted angles of the measurement can be found in this .pdf file (note that the azimuth representes the angle between the turntable and the far loudspeaker):

Targeted angles

Updated on Friday May 21, 2012
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The data in the HRIR database with measured actual source direction data by Javier Gómez Bolaños and Ville Pulkki
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