[ldarby]

> clip without blowing out your meters

If the audio clips, and the meter doesn't "blow out", then in my opinion that is a defective meter.

ALSA already has an eq plugin (http://quitte.de/dsp/caps.html#Eq10) and I added this to it:

                if ((s > +0.99 && x[z1] > +0.99 && x[z2] > +0.99) ||
                    (s < -0.99 && x[z1] < -0.99 && x[z2] < -0.99) ) {
                        //clipped audio isn't exactly 1.
                        printf ("dsp/Eq.h:process(): input clipped :(\n");
                }

....

                if (
                    (r >= 1.0 || r <= -1.0) &&
                    (r < 20 && r > -20)) { //uninited memory?
                        printf ("dsp/Eq.h:process(): output clipped :( %0.16f\n", r);
                }

(one day I should try to get upstream to accept that or something like it...)

[keurrr]

If you feel strongly about clipping, I would also accept a patch that allows a user to select an option in the GUI to prevent it.

[ldarby]

Yes, I have strong feelings about clipping... For many years I was using the track Moby - Inside trying to find a hifi system or headphones that could play it without sounding crap, then discovered it couldn't be because it's clipped.

And thanks but I'm happily using my patch on a pure alsa system without pulse audio, and don't really have the time to spend on adding the equivalent to yours sorry. But I'd want to if only to spread awareness about clipping - it's not just music, there are also many Youtube channels that I unsubed from because of it (I did tell them but they didn't care).

Actually preventing clipping instead just detecting it (which mine does) is a lot of work - it would need to find the loudest frequency, then find the closest band and reduce that (while loudly informing the user, and oviously with an option to control it).