Abstract
A circular microphone array may be assembled on the spot by combining the built-in microphones of several smartphones in a circular layout. The present work investigates different designs of such ad-hoc smartphone arrays that would allow the implementation of spatial audio techniques formulated in the circular harmonic domain. The tested techniques include a circular harmonic beamformer for direction-of-arrival estimation and noise reduction, as well as a cross-pattern coherence spatial post-filter for additional suppression of interferers and background noise. The array designs are compared with respect to their directivity characteristics and, additionally, evaluated with a listening test formed upon a simulated dataset of a multi-speaker event.
| Original language | English |
|---|---|
| Title of host publication | 152nd AES Convention |
| Publisher | Curran Associates Inc. |
| Pages | 386-395 |
| Number of pages | 10 |
| ISBN (Electronic) | 978-1-7138-5541-5 |
| Publication status | Published - 2022 |
| MoE publication type | B3 Non-refereed conference publication |
| Event | Audio Engineering Society Convention - Virtual, The Hague, Netherlands Duration: 16 May 2022 → 19 May 2022 Conference number: 152 https://aesshow.com/ |
Conference
| Conference | Audio Engineering Society Convention |
|---|---|
| Abbreviated title | AES |
| Country/Territory | Netherlands |
| City | The Hague |
| Period | 16/05/2022 → 19/05/2022 |
| Internet address |
Keywords
- Harmonic analysis
- Microphones
- Noise abatement
- Speech enhancement
- Statistical tests
- Beam formers
- Circular harmonics
- Circular microphone arrays
- Direction of arrival estimation
- Harmonic domain
- On the spots
- Pattern coherence
- Postfilters
- Smart phones
- Spatial audio
- Smartphones