I got a weeks break and I've decide to build a simple audio amplifier and I've been doing the transfer functions for the filters but I was wondering if anyone had a better faster method of designing filters? Like a design tool and a link to that tool. A program would be more desirable than a web site as most of the time I'm not near internet access. Though I love developing transfer functions I'm in a hurry to finish this up so any help would be greatly appreciated.
Thanks
Nick