Abstract
Existing hardware with microphones can potentially be used as sensor networks to capture speech and audio signals for the benefit of better signal quality than possible with a single microphone. A central pre-requisite for such ad-hoc acoustic wireless sensor networks (ASWNs) is an efficient communication protocol with which to transmit audio data between nodes. For that purpose, we present the world's-first speech and audio codec especially designed for ASWNs, which has competitive quality also in single-channel operation. To ensure quality in the single-channel scenario, it closely resembles conventional codecs of the TCX-type, but extended with features to facilitate multi-device operation, including dithered quantization, delay estimation and compensation, as well as multi-channel post-filtering. The codec is intended to become a baseline for future research and we therefore provide it as an open-access library. Our experiments confirm that performance is in the same range as recent commercial single-channel codecs and that added devices improve quality.
Original language | English |
---|---|
Title of host publication | Proceedings of the European Signal Processing Conference 2021 (EUSIPCO) |
Publisher | IEEE |
Pages | 1090-1094 |
Number of pages | 5 |
ISBN (Electronic) | 9789082797060 |
DOIs | |
Publication status | Published - Sep 2021 |
MoE publication type | A4 Article in a conference publication |
Event | European Signal Processing Conference - Dublin, Ireland, Dublin, Ireland Duration: 23 Aug 2021 → 27 Aug 2021 Conference number: 29 |
Publication series
Name | European Signal Processing Conference |
---|---|
ISSN (Print) | 2219-5491 |
ISSN (Electronic) | 2076-1465 |
Conference
Conference | European Signal Processing Conference |
---|---|
Abbreviated title | EUSIPCO |
Country/Territory | Ireland |
City | Dublin |
Period | 23/08/2021 → 27/08/2021 |