Room Acoustics Meter 1.85

This application is designed to facilitate the setup of a dedicated listening room, allowing users to connect their Android devices to sound systems and initiate measurement processes. The resulting data includes frequency response curves, phase information, and impulse response analysis. Additionally, users can generate waterfall diagrams and sound pressure maps for a comprehensive understanding of their audio environment.

Features:

• Measurement utilizing logsweep methodology
• Sequential function enabling rapid measurements across multiple microphone positions
• Automatic determination of microphone positioning based on sound propagation times
• Automated file name generation for efficient data management
• Frequency response analysis: encompassing both summed and windowed responses
• Integration of calculated reflections (comb filter) for comparative analysis with measurement data
• Phase analysis: includes raw data, rolled-up data, and group delay metrics
• Linear impulse response: available as raw data, smoothed data, step response, and energy-time curve
• Logarithmic impulse response: providing raw data, smoothed data, peak values, Energy-Time-Curve, and Schroeder Curve
• Impulse response filtering capabilities for windowed frequency responses and waterfall plots
• Visualization of tangents on the Schroeder curve for EDT, T15, T20, T30, or user-defined rules
• Customizable display options for frequency response and impulse response: including zoom functionality and the ability to overlay curves
• T60 assessment across frequency ranges with comparisons against industry standards such as DIN 18041, IEC 60268-13, EBU Tech 3276 (2nd)
• Waterfall display illustrating time evolution of frequency response via wavelet or FFT analysis
• Spectrogram visualization capabilities
• Frequency-dependent sound pressure mapping
• Calibration options for built-in microphones through comparative measurements, assuming availability of a measurement microphone
• Support for external measurement microphones including importation of calibration curves
• Results export functionality in HTML format
• Exportation of measurement data: Impulse responses accessible as .wav files and measured values in CSV and .FRD formats
• Export frequency response and phase information in .FRD format, compatible with various audio measurement software
• Language support in both English and German