A few months ago I was looking for a way to lower the amplification of the lower frequencies while listening to music on extremely bass-heavy in-ear headphones. The only way to accomplish that, seemed to be using JACK. Since that seemed overkill to me, I gave up.<\/p>\n
Today I found a solution that does not require JACK: Charles Eidsness’ ALSAEQUAL<\/a>. This is how you get it working with MPD<\/a> on Gentoo:<\/p>\n (copied from the ALSAEQUAL website – modified so that dmix is being used, which allows playing multiple audio sources simultaneously)\n<\/li>\n Other applications will be unaffected by the equaliser, if you don’t change the .asoundrc<\/tt> according to the comment, and if you don’t configure them to use the ‘equal’ ALSA device.<\/p>\n *<\/b><\/big>) Note that alsamixer needs to be run as the user that runs mpd. See Ian’s comment<\/a> for details.<\/p>\n Update (2012-06-16):<\/strong> Having the .asoundrc in place causes Skype to crash after a few seconds (see also this Gentoo Forums post<\/a>).<\/p>\n","protected":false},"excerpt":{"rendered":" A few months ago I was looking for a way to lower the amplification of the lower frequencies while listening to music on extremely bass-heavy in-ear headphones. The only way to accomplish that, seemed to be using JACK. Since that seemed overkill to me, I gave up. Today I found a solution that does not … Continue reading “An equaliser that works with MPD and ALSA”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11,13],"tags":[],"class_list":["post-180","post","type-post","status-publish","format-standard","hentry","category-gentoo-linux","category-linux-general"],"_links":{"self":[{"href":"https:\/\/patrick-nagel.net\/blog\/wp-json\/wp\/v2\/posts\/180","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/patrick-nagel.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/patrick-nagel.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/patrick-nagel.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/patrick-nagel.net\/blog\/wp-json\/wp\/v2\/comments?post=180"}],"version-history":[{"count":18,"href":"https:\/\/patrick-nagel.net\/blog\/wp-json\/wp\/v2\/posts\/180\/revisions"}],"predecessor-version":[{"id":246,"href":"https:\/\/patrick-nagel.net\/blog\/wp-json\/wp\/v2\/posts\/180\/revisions\/246"}],"wp:attachment":[{"href":"https:\/\/patrick-nagel.net\/blog\/wp-json\/wp\/v2\/media?parent=180"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/patrick-nagel.net\/blog\/wp-json\/wp\/v2\/categories?post=180"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/patrick-nagel.net\/blog\/wp-json\/wp\/v2\/tags?post=180"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\n
\r\nctl.equal {\r\n type equal;\r\n}\r\n\r\npcm.plugequal {\r\n type equal;\r\n slave.pcm \"plug:dmix\";\r\n}\r\n\r\npcm.equal {\r\n # Or if you want the equalizer to be your\r\n # default soundcard uncomment the following\r\n # line and comment the above line.\r\n# pcm.!default {\r\n type plug;\r\n slave.pcm plugequal;\r\n}\r\n<\/pre>\n\r\naudio_output {\r\n type \"alsa\"\r\n name \"equal\"\r\n device \"plug:plugequal\"\r\n}\r\n<\/pre>\n<\/li>\n