This is a simple software that I made, and that permits to process sound from an SB ISA sound card to another. Why SB ISA sound cards ?
Just because I was just testing how to control the Sound Blaster cards directly with the DMA, IRQ and DSP signals.
And, because we get very low latency with this (less than 30 msec for 44100 16 bits stereo), I wondered if I could be able to make a sound processor.
And here it is. It works under DOS, with two Sound Blaster ISA cards.|
Admire the screenshot in your right, that let see the processor in action. You can also follow this link to see a video.
For the moment, I implemented a noise gate, a stereo enlarger and a compressor-limiter. No frequency analysis for the moment.
I have to say that it MUST be two cards because they are full-duplex, but you cannot record and play both 16 bits at the same time on the same card. So, the only thing to do is to use two cards.