5 files

Data and supporting information for AES 141 convention paper "The room-in-room effect and its influence on perceived room size in spatial audio reproduction"

This fileset contains measurements, code, stimuli and listener response data relating to the following work:

R. J. Hughes, T. J. Cox, B. Shirley, and P. Power, "The room-in-room effect and its influence on perceived room size in spatial audio reproduction," in 141st Convention of the Audio Engineering Society, 2016.


In spatial audio it can be desirable to give the impression of a target space (e.g. a church). Often the reproduction environment is assumed acoustically dead; in practice most listening spaces (e.g. domestic living rooms) introduce significant reflections. The result is a room‑in‑room effect: a complex interaction of target and reproduction environments. This study investigates the influence on perceived room size. A number of target spaces were measured and rendered for loudspeaker playback. Reproduction rooms were measured, with variations produced via impulse response adjustment. Dynamic binaural playback allowed different target and reproduction room combinations, with participants judging the size of environment being reproduced. Results indicate the more reverberant of the target and reproduction rooms is most commonly heard.

Data description

The zip file preserves the directory structure and contains the following:

./Audio_samples - Original mono audio samples, or information relating to where audio was obtained.

./Measurements - Measured data, including first order B-format impulse responses for a variety of environment types and Binaural Room Impulse Response (BRIR) datasets# used to generate test material. Additional information relating to Head-Related Transfer Function (HRTF) and HeadPhone Compensation Filter (HPCF) data used is also included.

./MATLAB_functions - Additional MATLAB functions required to run MATLAB code, with reference to those available from other sources.

./Audio_booth_test_00 - Listening test material and response data for the smaller of the two rooms tested.

./Listening_room_test_00 - Listening test material and response data for the larger of the two rooms tested.

./Analysis_00 - Combined analysis of the response data for both test environments.

#Details relating to the method for generating the BRIRs will appear at the following link on publication of separate results: http://dx.doi.org/10.17866/rd.salford.3457760.


EP/L000539/1 (EPSRC)


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Acoustics Research Group