The purpose of this work is to describe the Microphone Network presently used at ITC-irst for multi-microphone datacollection and prototype development, with the specific aim of conducting research inside the CHIL European Project.In the project, we define a generic multi-sensor system which consists of two main components: a distributed multi-camera system for visual room observation, including several calibrated cameras, and a multi-microphone system for acoustic scene analysis, which consists of microphone arrays, microphone clusters, table top microphones and close-talking microphones allowing detection of multiple acoustic events, voice activity detection, ASR and speaker location and tracking. The target scenario comprises seminars and meetings. The entire audio acquisition system is based on a common sampling rate of 44.1 kHz and a sample accuracy of 24 bit. Also for acoustic sensors, a detailed characterization process as well as a calibration step are necessary, according to the purpose of having a jointly consistent description of the audio-video sensor geometry.
On calibration and coherence signal analysis of the CHIL microphone network at IRST
Cristoforetti, Luca;Omologo, Maurizio;Svaizer, Piergiorgio
2005-01-01
Abstract
The purpose of this work is to describe the Microphone Network presently used at ITC-irst for multi-microphone datacollection and prototype development, with the specific aim of conducting research inside the CHIL European Project.In the project, we define a generic multi-sensor system which consists of two main components: a distributed multi-camera system for visual room observation, including several calibrated cameras, and a multi-microphone system for acoustic scene analysis, which consists of microphone arrays, microphone clusters, table top microphones and close-talking microphones allowing detection of multiple acoustic events, voice activity detection, ASR and speaker location and tracking. The target scenario comprises seminars and meetings. The entire audio acquisition system is based on a common sampling rate of 44.1 kHz and a sample accuracy of 24 bit. Also for acoustic sensors, a detailed characterization process as well as a calibration step are necessary, according to the purpose of having a jointly consistent description of the audio-video sensor geometry.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
