The abbreviation DSP can refer to:
Computing
Digital signal processing, the study of signals in a digital representation and their processing methods
Digital signal processor, a specialized microprocessor designed specifically for digital signal processing
Dylan Server Pages, a web template engine using the Dylan language
Delivery Service Partner, a type of sales partner for Microsoft
Education
Developmental Social-Pragmatic model, a developmental intervention for Autistic Spectrum Disorders
Direct Support Professional, a US term for specialists in education of the mentally disabled
Military
Defense Standardization Program, a standards program in the US military
Defense Support Program, the U.S. Air Force early-warning satellites
Special Presidential Division, an elite Zairean military unit charged with the protection of the president
Music
Deathlike Silence Productions, an independent record label in Norway
Daesung Entertainment, a record label
dsp
Source:
http://en.wikipedia.org/wiki/DSP