信號處理包含了信號處理理論和實踐的各個方面。它的特色是原始的研究工作，教程和評論文章，以及對實際發展的敘述。它旨在向從事信號處理研究、開發或實際應用的工程師和科學家快速傳播知識和經驗。該期刊涵蓋的主題領域包括：信號理論；隨機過程；檢測和估計；光譜分析；濾波；信號處理系統；軟件開發；圖像處理；模式識別；光學信號處理；數字信號處理；多維信號處理；通信信號處理。生物醫學信號處理；地球物理和天體物理信號處理；地球資源信號處理；聲學和振動信號處理；數據處理；遙感；信號處理技術；雷達信號處理；聲納信號處理；工業應用；新應用。

Signal Processing incorporates all aspects of the theory and practice of signal processing. It features original research work, tutorial and review articles, and accounts of practical developments. It is intended for a rapid dissemination of knowledge and experience to engineers and scientists working in the research, development or practical application of signal processing.Subject areas covered by the journal include: Signal Theory; Stochastic Processes; Detection and Estimation; Spectral Analysis; Filtering; Signal Processing Systems; Software Developments; Image Processing; Pattern Recognition; Optical Signal Processing; Digital Signal Processing; Multi-dimensional Signal Processing; Communication Signal Processing; Biomedical Signal Processing; Geophysical and Astrophysical Signal Processing; Earth Resources Signal Processing; Acoustic and Vibration Signal Processing; Data Processing; Remote Sensing; Signal Processing Technology; Radar Signal Processing; Sonar Signal Processing; Industrial Applications; New Applications.