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Acoustivision Pro: An Open-Source Interactive Platform for Room Impulse Response Analysis and Acoustic Characterization

Mandip Goswami

TL;DR

The mathematical foundations underlying each acoustic metric are described, the system architecture is detailed, and preliminary case studies demonstrating the platform's utility across diverse application domains including classroom acoustics, healthcare facility design, and recording studio evaluation are presented.

Abstract

Room acoustics analysis plays a central role in architectural design, audio engineering, speech intelligibility assessment, and hearing research. Despite the availability of standardized metrics such as reverberation time, clarity, and speech transmission index, accessible tools that combine rigorous signal processing with intuitive visualization remain scarce. This paper presents AcoustiVision Pro, an open-source web-based platform for comprehensive room impulse response (RIR) analysis. The system computes twelve distinct acoustic parameters from uploaded or dataset-sourced RIRs, provides interactive 3D visualizations of early reflections, generates frequency-dependent decay characteristics through waterfall plots, and checks compliance against international standards including ANSI S12.60 and ISO 3382. We introduce the accompanying RIRMega and RIRMega Speech datasets hosted on Hugging Face, containing thousands of simulated room impulse responses with full metadata. The platform supports real-time auralization through FFT-based convolution, exports detailed PDF reports suitable for engineering documentation, and provides CSV data export for further analysis. We describe the mathematical foundations underlying each acoustic metric, detail the system architecture, and present preliminary case studies demonstrating the platform's utility across diverse application domains including classroom acoustics, healthcare facility design, and recording studio evaluation.

Acoustivision Pro: An Open-Source Interactive Platform for Room Impulse Response Analysis and Acoustic Characterization

TL;DR

The mathematical foundations underlying each acoustic metric are described, the system architecture is detailed, and preliminary case studies demonstrating the platform's utility across diverse application domains including classroom acoustics, healthcare facility design, and recording studio evaluation are presented.

Abstract

Room acoustics analysis plays a central role in architectural design, audio engineering, speech intelligibility assessment, and hearing research. Despite the availability of standardized metrics such as reverberation time, clarity, and speech transmission index, accessible tools that combine rigorous signal processing with intuitive visualization remain scarce. This paper presents AcoustiVision Pro, an open-source web-based platform for comprehensive room impulse response (RIR) analysis. The system computes twelve distinct acoustic parameters from uploaded or dataset-sourced RIRs, provides interactive 3D visualizations of early reflections, generates frequency-dependent decay characteristics through waterfall plots, and checks compliance against international standards including ANSI S12.60 and ISO 3382. We introduce the accompanying RIRMega and RIRMega Speech datasets hosted on Hugging Face, containing thousands of simulated room impulse responses with full metadata. The platform supports real-time auralization through FFT-based convolution, exports detailed PDF reports suitable for engineering documentation, and provides CSV data export for further analysis. We describe the mathematical foundations underlying each acoustic metric, detail the system architecture, and present preliminary case studies demonstrating the platform's utility across diverse application domains including classroom acoustics, healthcare facility design, and recording studio evaluation.
Paper Structure (47 sections, 21 equations, 9 figures, 6 tables)

This paper contains 47 sections, 21 equations, 9 figures, 6 tables.

Table of Contents

  1. Introduction
  2. Related Work
  3. Room Acoustics Measurement Standards
  4. Commercial and Research Software
  5. Room Impulse Response Datasets
  6. Acoustic Metrics: Theory and Computation
  7. Room Impulse Response
  8. Energy Decay Curve and Reverberation Time
  9. Early Decay Time (EDT)
  10. T20 and T30
  11. Octave-Band Analysis
  12. Clarity and Definition
  13. Clarity Index $C_{80}{}$
  14. Definition $D_{50}{}$
  15. Speech Transmission Index
  16. ...and 32 more sections

Figures (9)

  • Figure 1: Validation plots showing (a) correlation between predicted and measured RT60, (b) distribution of T30/T20 ratios, (c) comparison of simulated vs. analytical room mode frequencies.
  • Figure 2: System architecture diagram showing data flow from input (upload or dataset selection) through processing pipeline to visualization and export outputs.
  • Figure 3: Screenshots of the AcoustiVision Pro interface showing (a) the main dashboard with hero section and feature cards, (b) the standards compliance table, (c) the octave-band RT60 analysis (d) the 3D spatial view.
  • Figure 4: (a) Distribution of RT60 values across classroom samples with ANSI threshold marked. (b) Correlation between RT60 and STI proxy. (c) Compliance rate by room volume category.
  • Figure 5: (a) Comparison of acoustic parameters across healthcare space types. (b) Wellness score distribution. (c) Octave-band RT60 patterns showing frequency-dependent absorption effects.
  • ...and 4 more figures