The sound environment of human living space is changing considerably with the development of society, which affects people’s life and health. As a discipline that explores human perception of sound, the soundscape is developing rapidly, contributes to improving the sound environment, and plays a positive role in contemporary urban development and ecological protection. To investigate and optimize the sound environment, the necessary technical means are required to process large amounts of data. The current development of digital technology provides new perspectives and requirements for soundscape research. Digital technology can improve the efficiency and accuracy of soundscape research and form a more intuitive representation to visualize comfort perception indicators in the soundscape. This study reviews four aspects of the application of digital technology in China and abroad in the soundscape, including sound acquisition and reproduction, sound processing and analysis, sound field simulation and evaluation, and visualization of soundscape perception. The critical supporting technologies, processing principles, and assessments are reviewed in particular. Taking the soundscape perception map of the park as an example, the technical path of the soundscape map and its related visualization and intelligent regulation is expounded in detail. At the same time, the research on the calculation module of the soundscape perception map to be further optimized is also discussed. Among them, the comfort level prediction model can be updated and adjusted according to the actual situation in the local environment of the small park to improve the accuracy of comfort level simulation. And with the development of acquisition technology and simulation technology, the comfort simulation model will be further iterated. In addition, according to the comfort level and sound level map, the sensor control adjustment module can also be set to truly realize the brilliant park’s timeliness, visualization, and humanization. Based on this, some summaries and discussions are made on the application of digital technology in the field of the soundscape. Such as the aspects that still need to be improved and how to face the changes in future technology, climate, and lifestyle to provide new information and perspectives for future soundscape research. Keywords