Thank you all for your advice. The plain digital square wave doesn't sound well (I use it as an LFO in a ring modulator. I've just added some partials to my bandlimited square wave and now it works ok. <br>I'll try [sqosc~] though.<br>
<br>Cheers,<br><br>Pierre.<br><br><div class="gmail_quote">2012/2/6 Martin Peach <span dir="ltr"><<a href="mailto:martin.peach@sympatico.ca">martin.peach@sympatico.ca</a>></span><br><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
You can use [mrpeach/sqosc~] bandlimited to a low frequency as an LFO.<br>
Since [sqosc~] is slew-rate limited according to the bandwidth limit, the peaks are absolutely flat and there is no overshoot, and the transitions are smooth.<br>
<br>
Martin<div class="im"><br>
<br>
On 2012-02-06 09:43, chris clepper wrote:<br>
</div><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class="im">
In an analog synth the square wave has some distortion to it: the rise<br>
is not instantaneous and there is some overshoot of the peak too. Over<br>
the years this was minimized by using high slew rate amp circuits and<br>
the like so an old Moog pulse wave is less ideal in shape than a new one.<br>
<br>
For a digital square wave you would want to use band limiting to avoid<br>
alias artifacts which are quite severe for a square or sawtooth wave.<br>
As the frequency goes higher both of those waves will begin to look more<br>
like sine waves as the partials are filtered out. Pretty much every<br>
commercial digital synth and plugin uses anti-aliased waveforms.<br>
<br>
On Mon, Feb 6, 2012 at 8:31 AM, Pierre Massat <<a href="mailto:pimassat@gmail.com" target="_blank">pimassat@gmail.com</a><br></div><div class="im">
<mailto:<a href="mailto:pimassat@gmail.com" target="_blank">pimassat@gmail.com</a>>> wrote:<br>
<br>
Dear List,<br>
<br>
I need a square wave to use as an LFO in a ring mod patch. Though i<br>
could simply use [expr~ $v1>0.5], I m wondering if I could get a<br>
smoother square wave. I tried to use a bandlimited square wave, but<br>
I don't have enough harmonics and the top of the wave isn't flat<br>
enough. Incidentally, what do analog square waves from old synths<br>
look like? Anyway, I think i want a square wave with no jumps<br>
between 0 and 1.<br>
<br>
Cheers!<br>
<br>
Pierre.<br>
<br>
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