<div dir="ltr">Hello,<div><br></div><div>I tried with a regular stereo system with two speakers very close together and got bass, which seems wrong.</div><div><br></div><div>Then, i also tried on my project wher I use a TDA1543 as dac and the sound was not good, like with an echo.</div><div>TDA1543 outputs sound to a Differential mono amplifier.</div><div><br></div><div>So for the time being I came back to my original setting with mono, one channel output to one input of the TDA1543 and Single ended output to the mono amplifier.</div><div><br></div><span style="font-size:12.8px">/# Send alsa API to jconvolver</span><br style="font-size:12.8px"><span style="font-size:12.8px">pcm.rawjack {</span><br style="font-size:12.8px"><span style="font-size:12.8px"> type jack</span><br style="font-size:12.8px"><span style="font-size:12.8px"> playback_ports {</span><br style="font-size:12.8px"><span style="font-size:12.8px"> 0 jconvolver:in.L</span><br style="font-size:12.8px"><span style="font-size:12.8px"># 1 jconvolver:in.R</span><br style="font-size:12.8px"><span style="font-size:12.8px"> }</span><br style="font-size:12.8px"><span style="font-size:12.8px"> capture_ports {</span><br style="font-size:12.8px"><span style="font-size:12.8px"> 0 system:Output_L</span><br style="font-size:12.8px"><span style="font-size:12.8px"> 1 system:Output_R</span><br style="font-size:12.8px"><span style="font-size:12.8px"> }</span><br style="font-size:12.8px"><span style="font-size:12.8px">}</span><br style="font-size:12.8px"><span style="font-size:12.8px"># jackplug</span><br style="font-size:12.8px"><span style="font-size:12.8px">pcm.jack {</span><br style="font-size:12.8px"><span style="font-size:12.8px"> type plug</span><br style="font-size:12.8px"><span style="font-size:12.8px"> slave { pcm "rawjack" }</span><br style="font-size:12.8px"><span style="font-size:12.8px"> hint {</span><br style="font-size:12.8px"><span style="font-size:12.8px"> description "JACK Audio Connection Kit"</span><br style="font-size:12.8px"><span style="font-size:12.8px"> }</span><br style="font-size:12.8px"><div><span style="font-size:12.8px">}</span></div><div><span style="font-size:12.8px"># use following peripherical by defaut with alsa:</span><br></div><div><span style="font-size:12.8px">pcm.!default {</span><br style="font-size:12.8px"><span style="font-size:12.8px"> type plug</span><br style="font-size:12.8px"><span style="font-size:12.8px"> slave { pcm "rawjack" }</span><br style="font-size:12.8px"><span style="font-size:12.8px"> slave.channels 2</span><br style="font-size:12.8px"><span style="font-size:12.8px"> ttable.0.0 0.6</span><br style="font-size:12.8px"><span style="font-size:12.8px"> ttable.1.0 0.6</span><br style="font-size:12.8px"><span style="font-size:12.8px"> ttable.0.1 0</span><br style="font-size:12.8px"><span style="font-size:12.8px"> ttable.1.1 0</span><br style="font-size:12.8px"><span style="font-size:12.8px">}</span><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">2016-03-10 12:48 GMT+01:00 Ralf Mardorf [via Linux Audio] <span dir="ltr"><<a href="/user/SendEmail.jtp?type=node&node=99283&i=0" target="_top" rel="nofollow" link="external">[hidden email]</a>></span>:<br><blockquote style='border-left:2px solid #CCCCCC;padding:0 1em' class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">
On Thu, 10 Mar 2016 13:13:14 +0100, Gerhard Zintel wrote:
<br>>On Thursday 10 March 2016, Clemens Ladisch wrote:
<br></span><span class="">>> Can you look at the output with an oscilloscope?
<br>>Or record with the input of another sound card / computer and look at
<br>>it in e.g. Audacity?
<br><br></span>Or simply play a sinus tone and mix the tone and the out of phase tone
<br>to mono by a mixer or move two speakers face to face, one playing the
<br>tone, the other the out of phase tone.
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