{"action":"closed","issue":{"url":"https://api.github.com/repos/bmc0/dsp/issues/18","repository_url":"https://api.github.com/repos/bmc0/dsp","labels_url":"https://api.github.com/repos/bmc0/dsp/issues/18/labels{/name}","comments_url":"https://api.github.com/repos/bmc0/dsp/issues/18/comments","events_url":"https://api.github.com/repos/bmc0/dsp/issues/18/events","html_url":"https://github.com/bmc0/dsp/issues/18","id":242914594,"number":18,"title":"Effects samples","user":{"login":"arjunmenon","id":953959,"avatar_url":"https://avatars4.githubusercontent.com/u/953959?v=4","gravatar_id":"","url":"https://api.github.com/users/arjunmenon","html_url":"https://github.com/arjunmenon","followers_url":"https://api.github.com/users/arjunmenon/followers","following_url":"https://api.github.com/users/arjunmenon/following{/other_user}","gists_url":"https://api.github.com/users/arjunmenon/gists{/gist_id}","starred_url":"https://api.github.com/users/arjunmenon/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/arjunmenon/subscriptions","organizations_url":"https://api.github.com/users/arjunmenon/orgs","repos_url":"https://api.github.com/users/arjunmenon/repos","events_url":"https://api.github.com/users/arjunmenon/events{/privacy}","received_events_url":"https://api.github.com/users/arjunmenon/received_events","type":"User","site_admin":false},"labels":[{"id":49282170,"url":"https://api.github.com/repos/bmc0/dsp/labels/question","name":"question","color":"cc317c","default":true}],"state":"closed","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":1,"created_at":"2017-07-14T07:03:00Z","updated_at":"2017-07-16T20:36:55Z","closed_at":"2017-07-16T20:36:55Z","body":"Hey man\r\nI was able to successfully include this in RPi3 and test it with gmediarender. Installing them was straight forward!\r\n\r\nFour things I like to know\r\n1. Is there some doc, or you can give an example, which lists different types of sample effects for equalization _(rock, pop, classical, etc)_ and reverb _(hallway, concert, living room, etc)_? This would be great to begin and **then** understanding/playing with them?\r\n\r\n2. For mono output, I [added this](https://www.raspberrypi.org/forums/viewtopic.php?f=29&t=33431) in addition to what was described in the docs for `asound.rc`. It fails to output mono though.\r\n\r\n> `remix 0,1 2,3` mixes input channels 0 and 1 into output channel 0, and input channels 2 and 3 into output channel 1\r\n\r\nHow does mixing 2,3 output to 1? Shouldn't it output to 2 if going by the pattern? I can't understand partly because I am failing to hear them. I simply tried `remix -`. Input is simple stereo. Required is mono from from either channel.\r\n\r\n```\r\npcm.card1 {\r\n  type hw\r\n  card 0\r\n}\r\n\r\nctl.card1 {\r\n  type hw\r\n  card 0\r\n}\r\n\r\npcm.monocard {\r\n  slave.pcm card0\r\n  slave.channels 2\r\n#  type plug\r\n  type route\r\n  ttable {\r\n    # Copy both input channels to output channel 0 (Left).\r\n    0.0 0.5\r\n    1.0 0.5\r\n    # Send nothing to output channel 1 (Right).\r\n    0.1 0\r\n    1.1 0\r\n  }\r\n}\r\n\r\nctl.monocard {\r\n  type hw\r\n  card 0\r\n}\r\n\r\npcm.!default monocard\r\n```\r\n\r\n3. For `ffmpeg` where is it specifically used? General audio playback works without it just fine.\r\n\r\n4. There is a type of DSP referred to as Psychoacoustic bass boost. It just amplifies harmonics below the resonant frequency of the speaker, which is generally set in the software. Its a good type of bass boost without affecting the excursion of the driver. Since it simply filter out the fundamentals.\r\n\r\nTherefore, are there settings to just extract harmonics, say before, 100 hz and apply a gain to them.\r\nLike for 50Hz I run a filter and get all its even harmonics, discard the fundamental which is 50hz.  and apply a gain to all even harmonics. \r\nRepeat with 51, 52, etc."}}
{"actor":{"display_login":"bmc0"}}