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<p>Hi,</p>
<p>software like Pd or jack doesn't care because it's not forbidden
to send only positive or even constant values. You might use your
DAC to send control voltages for a modular synthesizer, for
example. Most audio interfaces, however, apply some kind of
highpass filter to the outputs to get rid of very low frequencies,
but there are some "DC coupled" audio interfaces which pass the
output unchanged. If you use such an interface with speakers, you
have to be careful :-) But then again, you speakers might actually
have a highpass filter...<br>
</p>
<p>Personally, I like to play it safe and add a [hip~ 5] as a DC
filter before my [dac~] :-) </p>
<p>Christof<br>
</p>
<div class="moz-cite-prefix">On 02.03.2020 00:24, ffdd cchh wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAO_HSB4wNE7gr-mB9tKGqeOm3+Nz5gHRw9bjAz_FxWhyAOANaw@mail.gmail.com">
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<div dir="ltr">Hi everyone,
<div><br>
</div>
<div>I just found out that I have sent signals between 0..1
instead of -1..1 to [dac] (!!!), and I am wondering... what
happens in that case? </div>
<div><br>
</div>
<div>Does Pd take care of that in any way?</div>
<div>Or, Is that the job of portaudio/asio/jack?</div>
<div>Or, Is that the job of the audio interface? </div>
<div>Or, nothing happens and you just send non-negative values
to a speaker?<br clear="all">
<div><br>
</div>
<div>I attach a minimal noise test patch to show this (I only
hear a difference in loudness on macos using portaudio and a
motu...)</div>
<div><br>
</div>
<div>Thanks in advance,</div>
<div><br>
</div>
<div>f</div>
<div><br>
</div>
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