Politecnico di Milano Research with Voyage Audio’s Spatial Mic Dante: A Case Study

Politecnico di Milano Research with Voyage Audio’s Spatial Mic Dante: A Case Study
March 6, 2024 Voyage Audio

Politecnico di Milano Research with Voyage Audio’s Spatial Mic Dante: A Case Study

This research, conducted by Politecnico di Milano, unveils the HOMULA-RIR (Higher-Order Microphones And Uniform Linear Microphone Array – Room Impulse Response) dataset, an extensive collection of Room Impulse Responses (RIRs) captured in a seminar room. The dataset, derived using both Uniform Linear Arrays (ULAs) and a network of Voyage Audio Spatial Mic Dantes (Higher-Order Microphones or HOM), is designed for varied applications in telecommunications, teleconferencing, and spatial audio. It showcases the Spatial Mic Dante’s adaptability in accurately recording complex acoustic environments.

The paper will be presented during the IEEE ICASSP 2024 conference in Seoul, in the HSCMA Workshop and is available for download here: https://arxiv.org/abs/2402.13896.

The research details the precise measurements and calibration of microphone positions, ensuring the dataset’s accuracy and reliability. Analysis, including measurements of reverberation time and clarity index, provides an in-depth understanding of the seminar room’s acoustic properties.

Validation of the dataset’s applicability was achieved through its use in classic audio processing challenges, including blind source separation and source localization. Federico Miotello, a PhD student with the Image and Sound Processing Group at Politecnico di Milano, commented on Spatial Mic Dante’s performance, stating, ‘We are very happy with the mics and we will use them for more acquisitions in the near future.’ This endorsement, directly from the lead author of the research, underscores the significant utility of the dataset and confirms the pivotal role of the Spatial Mic Dante in advancing the field of audio technology research and development.

By releasing this carefully captured and analyzed dataset, the study sets the stage for future audio technology innovations, encouraging researchers, professionals, and enthusiasts to explore new possibilities in spatial audio and beyond.

Objectives of the Research

  • Capture and Analyze Room Impulse Responses (RIRs): The study aimed to gather comprehensive RIRs using networked Spatial Mic Dantes and ULAs, creating a dataset that reflects the complex acoustics of real-world environments.
  • Enhance Telecommunications and Teleconferencing: It sought to improve telecommunication systems by understanding and applying the acoustic properties of typical teleconferencing spaces.
  • Facilitate Spatial Audio Applications: The research supports a broad range of spatial audio applications, from virtual reality to acoustic modeling, by providing precise acoustic measurements and insights.
  • Validate the Effectiveness of Spatial Mic Dante: To demonstrate Spatial Mic Dante’s ability to capture high-fidelity spatial audio, highlighting its value for audio professionals and researchers.
  • Inspire Future Research and Innovation: By sharing methodologies, findings, and the HOMULA-RIR dataset, the study aims to stimulate further exploration and innovation in spatial audio technology.

The Setup: Five Networked Spatial Mic Dantes

The research utilized a network of five Spatial Mic Dantes, arranged within a seminar room to simulate a teleconferencing scenario. This arrangement demonstrated the Spatial Mic Dante’s precision in capturing detailed audio data and its potential in creating datasets that accurately reflect the acoustics of real-world environments.

Future Research and Application Ideas

The case study opens avenues for various future research and practical applications, including enhancing VR environments with lifelike audio captures, leveraging the dataset for acoustic modeling in architectural projects, developing teleconferencing systems that mimic in-person meetings, creating immersive educational tools, and enabling music production in virtual acoustically-modeled environments.


The HOMULA-RIR dataset, compiled with ULAs and Spatial Mic Dantes, provides a valuable resource for diverse audio technology applications. This research not only exhibits the Spatial Mic Dante’s capabilities in capturing and analyzing intricate acoustic data but also underscores its potential to influence future developments in spatial audio, telecommunications, and beyond.

Inviting Collaboration and Exploration

We invite the broader research community, audio professionals, and enthusiasts to engage with these findings and consider the impact of spatial audio capture in their work. This foundational study encourages future innovations and collaborative efforts in spatial audio technology.

Engage with Us

Voyage Audio is dedicated to advancing spatial audio technology. We encourage you to explore this research and see how these insights might inspire your next spatial audio project or related field endeavor. Together, we can explore the extensive possibilities in audio technology, driven by comprehensive research and the potential – if you have an application you would like to discuss with us, please feel free to drop us an email at info@voyage.audio.