[HN Gopher] Plug a guitar in your C64 and use it as a wah pedal ___________________________________________________________________ Plug a guitar in your C64 and use it as a wah pedal Author : stefanorastron Score : 35 points Date : 2022-09-23 09:08 UTC (1 days ago) (HTM) web link (www.orastron.com) (TXT) w3m dump (www.orastron.com) | rwaksmunski wrote: | I think Machinae Supermacy band does this: | https://www.youtube.com/watch?v=XKkmyMKbPKE | classichasclass wrote: | Warning to the curious: it is very easy to fry your SID | connecting directly to the audio in (don't ask how I know this). | Make sure of your levels before you connect, and don't plug this | in with the power on in case there's a short. | diydsp wrote: | any suggestions to protect it? e.g. buffer with an op-amp, | right? Any way to use diodes for static protection, etc.? | [deleted] | satiric wrote: | One common way to provide input overvoltage protection is | through a pair of schottky diodes. This article is a good | resource https://www.digikey.com/en/articles/protecting- | inputs-in-dig... | buescher wrote: | That's a pretty good article. Also, the classic one-volt- | or-so voltage limiter is a pair of antiparallel silicon | diodes. You can put them in series for a bigger limit. | classichasclass wrote: | There are some good practical solutions here ( https://www.le | mon64.com/forum/viewtopic.php?t=55483&sid=2710... ) but the | most important thing is keep the voltages down. They suggest | three volts max peak to peak, which seems prudent. | the_other wrote: | > don't ask how I know this | | Tease! | stefanorastron wrote: | ... or emulate the whole thing using a free VST plugin. | | (shameless plug) | TheRealPomax wrote: | Find the right garage sale and the C64 _is_ a free plugin =D | seanhunter wrote: | One thing to note about a wah-wah pedal[1] if you ever want to | simulate it in software is that if I understand it correctly it's | a parametric equalizer and when you wobble the peddle you are | affecting the Q (bandwidth) of the equalization. You can hear | this for yourself if you use a normal mixing desk, just play | something, set a reasonable boost to some mid frequency on the | parametric eq and wobble the Q backwards and forwards. You | basically get the effect of the pedal. | | [1] And it has to be a "wah-wah", not "wah". | camtarn wrote: | This is incorrect. | | When you move the wah pedal, you're moving the _cutoff_ of the | filter, not the Q. The Q is fixed. | | You're also incorrect about the name. Just 'wah' is perfectly | acceptable. | brudgers wrote: | Wikipedia has it as "wha-wha pedal." | | https://en.m.wikipedia.org/wiki/Wah-wah_pedal | | Because of the Wha-Wha (or Wa-Wa) effect. | | https://en.m.wikipedia.org/wiki/Wah-wah_(music) | [deleted] | wkdneidbwf wrote: | > And it has to be a "wah-wah", not "wah". | | this is just not true. guitarists regularly call it either. i | hear it called a "wah" more often these days than "wah-wah". | | anyone will clearly understand and not look at funny if you say | "wah pedal" | myself248 wrote: | YES! Someone finally used the audio-in pins! | | The SID has audio-in that can be summed with internally- | synthesized sounds and routed through the on-chip filters before | going back out. | | I found this pinout in the programmer's reference guide and | tinkered with it a bit as a kid, but I didn't really know what I | was doing, so it never went beyond a novelty. Who knew, forty | years later, that it'd get proper treatment as an effects | generator! | camtarn wrote: | Thanks for explaining - I had no idea there were audio in pins, | and was searching the page for how they managed to route audio | to the SID without any modification. ___________________________________________________________________ (page generated 2022-09-24 23:00 UTC)