DSPvs.PC.docVIP

EE 289 LAB 10 DSP vs. PC Overview Most of the worksheets for this class run on the DSP board. Many of the VAB worksheets come in two versions, PC and DSP.? The DSP version runs on the DSP board and uses the PC to display information.? The PC versions run completely on the PC, meaning they do not need the DSP board. There are some worksheets which only run on the PC (no DSP version).? For example, all the image processing worksheets run only on the PC and not on the DSP.? This lab shows the difference between the worksheets and explains why some only run on the PC. Worksheets Description Freq Display DSP.LST Freq Display PC.LST Freq Display HD.LST These worksheets show the difference between running on the DSP board, running on the PC, and running on the PC in half duplex. Instructions Should the DSP version or the PC version be used? How do you tell them apart? The filename tells you which is which.? The last characters before the .LST should be either DSP or PC. Which one should you use? Generally, if there are two versions you should pick the DSP version.? The exceptions will be noted in the corresponding labs. What is the difference between the two? The DSP version requires you to have a DSP board attached to your computer. You do not need a sound card; the DSP does all the sound processing in that it has an A/D and D/A (Microphine and Speaker). Most of the blocks in a worksheet run on the DSP.? Some of the blocks move the data from the DSP to your PC so you can see it. This is one benefit of the VAB software. The PC version does not require a DSP board, but it does require a sound card.? Your PC does all the processing. Why have two versions? We would rather do all the processing on the DSP board, but there are some limits to this particular board.?? This DSP board has only 8K-bytes of memory.? Compare that to the many gigabytes on your PC has.? The VAB people have done some amazing things so we can do so much with 8K, but sometimes we just need more