{"action":"opened","issue":{"url":"https://api.github.com/repos/alejolp/extmodem/issues/12","repository_url":"https://api.github.com/repos/alejolp/extmodem","labels_url":"https://api.github.com/repos/alejolp/extmodem/issues/12/labels{/name}","comments_url":"https://api.github.com/repos/alejolp/extmodem/issues/12/comments","events_url":"https://api.github.com/repos/alejolp/extmodem/issues/12/events","html_url":"https://github.com/alejolp/extmodem/issues/12","id":177652107,"number":12,"title":"extmodem decodes only when microphone playback isn't muted","user":{"login":"jpalczewski","id":4793526,"avatar_url":"https://avatars.githubusercontent.com/u/4793526?v=3","gravatar_id":"","url":"https://api.github.com/users/jpalczewski","html_url":"https://github.com/jpalczewski","followers_url":"https://api.github.com/users/jpalczewski/followers","following_url":"https://api.github.com/users/jpalczewski/following{/other_user}","gists_url":"https://api.github.com/users/jpalczewski/gists{/gist_id}","starred_url":"https://api.github.com/users/jpalczewski/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jpalczewski/subscriptions","organizations_url":"https://api.github.com/users/jpalczewski/orgs","repos_url":"https://api.github.com/users/jpalczewski/repos","events_url":"https://api.github.com/users/jpalczewski/events{/privacy}","received_events_url":"https://api.github.com/users/jpalczewski/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2016-09-18T13:33:44Z","updated_at":"2016-09-18T13:33:44Z","closed_at":null,"body":"Hi again,\r\n\r\nI have another question: In #11 there's specified my environment - I noticed that while `Mic` in `Playback`(I'm speaking about `alsamixer`) is muted, extmodem isn't able to decode either DTMF tones or APRS packets, so in case when RPi mic & speaker output are connected to speaker & mic in my PC, I can hear all sounds back, and I don't know how to solve it - I'm sure that problem is related to USB card at all(on soundblaster even soundmodem worked correctly), but there's maybe some solution - do you have any ideas? APRS is simplex at all, but I don't know how modules like [DRA818V](http://www.hamshop.cz/data/items/266_113.pdf) will behave. "}}
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