@jancsika "Please hammer away at the <ctrl-b> help browser in Purr Data by adding issues to the tracker"

OK, good to know. Actually I just reported one (https://git.purrdata.net/jwilkes/purr-data/issues/570) -- comport-help.pd is not found in the help browser, but the object is available.

Searching for "biquad" does turn up biquad~ help, but the problem is that the help patch illustrates nothing about calculating filter coefficients. It's just not useful for musical purposes without being able to specify cutoff frequency and Q. Sure, you can "build it" with what's given -- actually, I looked at that a couple of months ago, and decided it would take me at least a whole afternoon to hack up my own coefficient calculator, and then I just went looking for other people's abstractions. (Compare Max, where filtergraph is built-in, or SC where RLPF is built-in.)

I should also say WRT Purr-Data, I'm afraid I'm going to have to stop using it next semester. GEM is necessary for this two-semester course, and the media lab is all Mac. That Purr-Data for Mac doesn't support GEM is, unfortunately, a deal-breaker.

hjh

Searching for "biquad" does turn up biquad~ help, but the problem is that the help patch illustrates nothing about calculating filter coefficients.

Try the search again using the settings I gave in the comment under the issue you added to the tracker.

Using those settings, a search for "fmod" also returns "fmod". Unfortunately the search results aren't prepending the library name which is an issue that needs fixing.

Also I see that [creb/fmod] easily loses precision. I think I've got a fix for that...

That Purr-Data for Mac doesn't support GEM is, unfortunately, a deal-breaker.

I'm not sure what your original terms were. Are you in search of

1. the most suitable software
2. the most suitable free/open source software
3. the most suitable gratis software
4. something else?

@jancsika said:

Searching for "biquad" does turn up biquad~ help, but the problem is that the help patch illustrates nothing about calculating filter coefficients.

Try the search again using the settings I gave in the comment under the issue you added to the tracker.

Seen that, thanks.

That Purr-Data for Mac doesn't support GEM is, unfortunately, a deal-breaker.

I'm not sure what your original terms were. Are you in search of

1. the most suitable software
2. the most suitable free/open source software
3. the most suitable gratis software
4. something else?

Pd-vanilla plus a few specific external libraries will meet the needs of that course. Purr Data's GUI is more attractive, and the zoom feature is extremely useful in the classroom, but these are not critical. The ability to use GEM or Ofelia on Mac, Windows and Linux platforms is critical for me.

I suppose really "the most suitable software" is Ableton Live + Max4Live. But I can't in good conscience require students to use a specific commercial software package when I know, practically speaking, most of the students here will not pay for it. So FLOSS is preferable, yes.

But that's not really relevant to the comment. The point is that Purr Data is, unfortunately, not currently suitable for multimedia on an OS platform that is widely used for digital arts, while Pd-vanilla is.

hjh