---
title: "Reciprocal binaural room impulse response measurements"
authors: ["Johannes Klein", "M. Pollow", "J. Fels", "Michael Vorlaender"]
year: 2012
venue: "The Journal of the Acoustical Society of America"
arxiv: null
doi: "10.1121/1.4755015"
source: "https://doi.org/10.1121/1.4755015"
topics: [binaural, measurement, brir, hrtf, anthropometry, spherical-harmonics]
seed_rank: 1744
seed_batch: "audio-harvest-2026-09-09"
reviewed: "2026-09-09"
pool: "realtime"
relevance_score: 8
lineage: hrtf-spatial-audio
cites:
  - title: "Localizing nearby sound sources in a classroom: Binaural room impulse responses"
    url: "https://doi.org/10.1121/1.1872572"
    year: 2005
    arxiv: null
    doi: "10.1121/1.1872572"
see:
  - "1722-localizing-nearby-sound-sources-in-a-classroom-binaural-room-impulse"
  - "1682-fundamentals-of-binaural-technology"
---

# Reciprocal binaural room impulse response measurements

## One-sentence takeaway

Reciprocal BRIR measurement: swap loudspeaker/mic using reciprocity to speed binaural room IR campaigns (Klein/Pollow/Fels/Vorländer JASA 2012).

## Why it matters here

Measuring BRIRs for every head pose is brutal. Reciprocity (source at ear, mics in room) is a lab trick Anoptic won't run, but it explains HUTUBS/SONICOM acquisition papers. Harvest BRIR/HRTF/SH.

## Key ideas

- **Acoustic reciprocity.** Ear↔room swap under linear acoustics.
- **JASA 2012.** DOI 10.1121/1.4755015; Semantic Scholar URL in harvest.
- **Measured BRIR.** Not simulated Wendt 2014.
- **Spherical-harmonics tagged** — spatial sampling of the room field.

## Caveats

Lab method, not a renderer. Reciprocity assumes LTI air (no wind, no nonlinear PA). Not dry HRTF CIPIC.

## Links

- DOI: https://doi.org/10.1121/1.4755015
- HTML: https://www.semanticscholar.org/paper/4557db2db8c470e042deab35213e91cc9dd67051