3D Meshgrid Room Impulse Response Dataset – Part 0 (Raw Measurements)

Raw 3D meshgrid room impulse response dataset measured at 48 kHz, including reflections from the microphone array measurement frame. This dataset contains raw room impulse responses measured in a three-dimensional spatial grid. The data include artifical reflections originating from the side and upper frames of the microphone array measurement system and are provided before the reflection suppression processing applied in the processed dataset (Part 1). The purpose of releasing this raw dataset is to support research on reflection suppression methods and related signal processing techniques. Researchers interested in developing alternative methods for removing measurement fixture reflections can use these data as a reference. Impulse responses were measured using a spatial sampling grid with a spacing of 2 cm in all directions. The grid consists of 48 positions along the x-axis, 51 positions along the y-axis, and 26 positions along the z-axis for each loudspeaker position. The measurement excitation signal was a 2-second Time-Stretched Pulse (TSP), and the impulse responses were recorded with a sampling frequency of 48 kHz. Each impulse response stored in this dataset has a length of 4800 samples (100 msec). A MATLAB example script for loading and visualizing the dataset is included. For additional details on the measurement setup, dataset structure, please refer to the dataset page: https://yh-audio.github.io/meshgrid-ir.html