The best replacement for dsp is fpga.

The best alternatives to dsp are rated as following:
★★★★★  fpga
★★★  microcontroller
★★  akpsi
★★  microprocessor
★★  mcu
★★  ssp
★  arm
★  gpu
★  dmp
★  ad network
★  oem
★  native
  asic
  pvdm
  ad exchange
  dolby
  justin wong

Your alternative for dsp is not listed? Suggest!
Speaking about dsp, one probably shouldn't forget about matlab.

Other search terms related to dsp and their ratings are:
★★★★★ matlab
★★★★★ fpga
★ arm
microcontroller
matlab projects
codec
You have in mind a companion for dsp and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of dsp in all years. Click on graph for more.
dsp
fpga
microcontroller