This is an unusual article, in that it documents an abandoned approach that I am hopeful some others will pick up and maintain. The Active Speaker Test Bed was envisioned as a low-cost learning platform that could tie together a lot of the concepts presented in other articles on this site. The test bed was originally started as a proposal for the Part Express Speaker Design Team, but it proved to be a bit too complicated as a PE project and it was subsequently abandoned. However, the Test Bed is still a good idea, especially as a learning tool, and I’ve got a number of DSP boards that were completed as part of that effort. So it’s worth spending some time documenting this project and outlining how the Test Bed could be used.
The proposal to PE for this project is at this link (http://www.audiodevelopers.com/PE_design_team/Active_Speaker_Test_Bed_Rev1.pptx).