This dataset contains noise study data used in the paper: Mechanisms of root-reinforcement in soils: an experimental methodology using four-dimensional X-ray computed tomography and digital volume correlation. These include raw CT scans and processed digital volume correlation data. This dataset is part of another dataset which covers other aspects of the paper DOI: 10.5281/zenodo.3352268 The structure of the dataset is as follows: Noise study CT raw volumes are contained in a zip file. There are four raw files corresponding to the four noise study steps. These files are 8-bit unsigned, dimensions are 1800 x 1800 x 1400 pixels. A txt file giving more details to the data is included. CT_Raw_data_Noise_Scans.zip Metadata files generated for each scan given details of scan parameters are found in the zip file: CT_Scan_Metadata.zip Tabulated digital volume data for the noise study scans are contained in the zip file. Tabulated data for each subset size is included in subfolders. A .txt file explains the structure of the tab separated .dat files, i.e. what each column of data represents, and what CT scan each of the four .dat files relate to. DVC_Noise_Study_Data.zip