Details
| Original language | English |
|---|---|
| Title of host publication | Fortschritte der Akustik - DAGA 2018 |
| Subtitle of host publication | 44. Deutsche Jahrestagung für Akustik |
| Publication status | Published - 2018 |
| Event | DAGA 2018: 44. JAHRESTAGUNG FÜR AKUSTIK - München, Germany Duration: 19 Mar 2018 → 22 Mar 2018 |
Abstract
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Fortschritte der Akustik - DAGA 2018: 44. Deutsche Jahrestagung für Akustik. 2018.
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research
}
TY - GEN
T1 - Real-Time Estimation of Propagation Delays for Temporal Alignment of Audio Signals in Augmented Reality Applications
AU - Nophut, Marcel Martin
AU - Hupke, Robert Johannes
AU - Preihs, Stephan
AU - Peissig, Jürgen Karl
PY - 2018
Y1 - 2018
N2 - In augmented reality audio applications a superposition of environmental sounds and supplementary audio content is used to create auditory enhancements for the listener in a broad range of use cases. In some use cases environmental sounds and supplementary content may be highly correlated, for example in audience services at live events, where a live playback through PA speakers is enhanced by augmented reality audio content, e.g. to create an individualized live mix. Without temporal alignment of those signals a superposition causes comb filtering effects or confusing echoes.This contribution proposes an efficient method that is able to robustly detect a temporal offset of correlated audio signals. It is based on a recursive cross-correlation estimation and a peak detection algorithm. The method focuses on indoor music and speech events with their typically occurring problems like room reflections, crosstalk, tonal components and a large number of correlation lags. The obtained temporal offset is used to delay the supplementary audio content in order to achieve a temporal alignment of the signals.
AB - In augmented reality audio applications a superposition of environmental sounds and supplementary audio content is used to create auditory enhancements for the listener in a broad range of use cases. In some use cases environmental sounds and supplementary content may be highly correlated, for example in audience services at live events, where a live playback through PA speakers is enhanced by augmented reality audio content, e.g. to create an individualized live mix. Without temporal alignment of those signals a superposition causes comb filtering effects or confusing echoes.This contribution proposes an efficient method that is able to robustly detect a temporal offset of correlated audio signals. It is based on a recursive cross-correlation estimation and a peak detection algorithm. The method focuses on indoor music and speech events with their typically occurring problems like room reflections, crosstalk, tonal components and a large number of correlation lags. The obtained temporal offset is used to delay the supplementary audio content in order to achieve a temporal alignment of the signals.
M3 - Conference contribution
BT - Fortschritte der Akustik - DAGA 2018
T2 - DAGA 2018
Y2 - 19 March 2018 through 22 March 2018
ER -