I just tested all three bass boost calculators (Amb, Morsel, Tangent) on five Mac OS X browsers (Safari, IE, OmniWeb, Foxfire, Mozilla).

The number.tofixed(2) issue wipes out Amb and Morsel on Safari, IE, Omniweb. All other combinations work.

Here's a possible fix? (I haven't tried it, but it looks reasonable.)

Quote:



Yes. That's because IE is still v5 for Mac, and because Safari (KHTML) attends to ECMAScript, which is roughly equivalent to Javascript 1.4. The method you're using was introduced in 1.5.

Why not use Math.round() the way I've done in my calculator? That method goes back to JS 1.0. No sense ignoring a significant chunk of your user base when a reasonable workaround exists. (Probably 5%, by looking at my web stats.)

Thanks for the hint syzygies and tangent, I've changed my site to use Math.round() now.

How critical is group delay? I just downloaded and ran tangent's Micro-cap simulation, plot attached. I'm not sure where the audible perception threshold is, i.e. how many mS can I get away with?

Micro-Cap evaluation version 8.1.1.0 is reporting an error on start-up using tangent's file download from his web site: http://tangentsoft.net/audio/ppa/amp...tml#bass-boost .
Extra or unknown data: Static Grids = False.
Sounds like a version problem. No big deal, just thought I'd mention it. Runs fine as-is.

Update: Most of the delay is below 20 Hz, so it's probably not that important.