Technical analysis of the Bluetooth Auracast system in the Pilatus Arena

Summary

A visit to the Pilatus Arena in Kriens, described as Switzerland's first sports stadium with an Auracast assistive listening system, testing roaming between transmitters, reception and the delay at a rear seat.

Key findings

• Four transmitters of one brand share one broadcast name. That brand's receivers show a single stream and switch automatically to the transmitter with the strongest signal (RSSI) as the listener moves.
• Phones and hearing aids did not do this at the time: their assistants listed four identically named streams with no way to tell which was strongest. Developers told the authors this is expected to be fixed.
• The three hearing aid models and two headphones tested received the streams, with phones used as assistants. Audio quality, intelligibility and reception were judged faultless with personal devices and with the arena's loaned receivers with neckloops.
• From simultaneous recordings at a rear seat, the Auracast signal arrived less than 30 ms ahead of the loudspeaker sound, with smaller offsets nearer the loudspeakers. The authors conclude that no disturbing echo arises even with hearing aids that add more delay.
• The introduction dates the visit to November 2025. The Roaming and So verlief der Test sections name four Listen Auri TX2N transmitters, Auri RX1 receivers, Starkey Edge, GN ReSound Vivia and Oticon Intent hearing aids, and Humantechnik earisMAX and JBL Tour Pro 3 headphones. The report supplies no receiver-specific coverage map.
• The Test section identifies the timing signal as the direct output of an Auri RX1 receiver, recorded simultaneously with airborne sound during a short video of the match; the offset was evaluated afterwards in Audacity.

Limits

One visit during a match, with one transmitter brand. The test section describes a short recording, without stating the duration of the visit, participant count, attendance, full-bowl coverage or seat-to-transmitter distances. Ratings are the testers' judgement without stated criteria. The delay was measured at one rear seat through a dedicated receiver, not through each hearing aid.

Read the original

pro-audito.ch/news/technische-analyse-des-bluetooth-auracast-systems-in-der-pilatus-arena

Link checked 13 October 2026. We link to the original and do not host copies.

Cited in

• Should the Auracast stream be delayed to line up with the loudspeakers?Open
• How many receivers and neckloops does each code require, and how should a loan pool be run?Partly answered
• How do many transmitters share one broadcast across a large venue?Open
• How do listeners find and join the right broadcast?Open
• Do neckloops give telecoil users good sound from FM, infrared, Wi-Fi and Auracast receivers?Not reliable yet
• What works in stadiums and arenas, and what do the rules ask of them?Partly answered

Cite this source

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