Speech intelligibility analysis and approximation to room parameters through the Internet of Things

Jesus Lopez-Ballester*, Jose M. Alcaraz Calero, Jaume Segura-Garcia, Santiago Felici-Castell, Miguel Garcia-Pineda, Maximo Cobos

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)
29 Downloads (Pure)


In the last years, Wireless Acoustic Sensor Networks (WASN) have been widely applied to different acoustic fields in outdoor and indoor environments. Most of these applications are oriented to locate or identify sources and measure specific features of the environment involved. In this paper, we study the application of a WASN for room acoustic measurements. In order to evaluate the acoustic characteristics, a set of Raspberry Pi 3 (RPi) has been used. One is used to play different acoustic signals and four are used to record at different points in the room simultaneously. The signals are sent wirelessly to a computer connected to a server, where using MATLAB we calculate both the impulse response (IR), and different acoustic parameters, such as the Speech Intelligibility Index (SII). In this way, the evaluation of room acoustic parameters with asynchronous IR measurements two different applications has been explored. Finally, the network features have been evaluated in order to assess the effectiveness of this system.
Original languageEnglish
Article number1430
Number of pages10
JournalApplied Sciences
Issue number4
Publication statusPublished - 5 Feb 2021


  • WASN
  • room acoustics
  • impulse response
  • speech intelligibility index
  • room parameters estimation


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