--- In [email protected], "Bob Macklin" <[EMAIL PROTECTED]> wrote: > > I have been trying to learn how the sound card interface works. > > I use VC++ Ver 5 because it was the last version I bought brfore I > retired. And I am comfortable with it. > > I have found the DSOUND files but not much infomation on how it works. > > Is it possible to get any help from this group about how you read > and write to the sound card?
Back in 2003 I was asked by the RSGB (the UK equivalent of the US ARRL) to write a chapter for a book they publisehd the next year, named "Command". The chapter was about interfacing the sound card in a simple way, using the wavIn and wavOut APIs. I write for that chapter an example program, intended to implement a notch filter for the 50 or 60 Hz hum often found in received radio signals. I called that program Humid (Hum Instant Destroyer...) It can be compiled with straight VC5, no fancy compilers nor MFC needed. You can find its source code in the File section of this group, in the folder named I2PHD, filename humid.zip 73 Alberto I2PHD
