Date: Fri, 5 Jan 2018 02:44:15 +0100 From: Polytropon <freebsd@edvax.de> To: blubee blubeeme <gurenchan@gmail.com> Cc: Per Gunnarsson <p.gunnarsson@yahoo.com>, FreeBSD <freebsd-questions@freebsd.org> Subject: Re: Static noise with microphone Message-ID: <20180105024415.c10765fc.freebsd@edvax.de> In-Reply-To: <CALM2mEmersOk3t1y2S%2Bac=nJPHAFihvMBjj7QWCP4D_=4SrVhA@mail.gmail.com> References: <c2888d59-e1f2-9e07-8a1f-16b0013d1c5b@yahoo.com> <CALM2mEmersOk3t1y2S%2Bac=nJPHAFihvMBjj7QWCP4D_=4SrVhA@mail.gmail.com>
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On Fri, 5 Jan 2018 02:43:22 +0800, blubee blubeeme wrote: > On Fri, Jan 5, 2018 at 2:35 AM, Per Gunnarsson via freebsd-questions < > freebsd-questions@freebsd.org> wrote: > > > Hello! > > > > I have attached a microphone (a Mico from Trust) to the mic in on my > > computer, and it produces some static noise. It's not connected to the USB > > port. > > > > Is this just hardware related or is there anything I can change in the > > software to get rid of it? > > > > You can hear the noise here: > > > > http://mustafejen.se:8000/stream.ogg > > > > I found this in my dmesg: > > > > hdac0: <NVIDIA (0x0e0f) HDA Controller> mem 0xfe080000-0xfe083fff at > > device 0.1 on pci3 > > hdac1: <AMD (0x157a) HDA Controller> mem 0xfe500000-0xfe503fff at device > > 9.2 on pci0 > > hdacc0: <NVIDIA (0x0051) HDA CODEC> at cad 0 on hdac0 > > hdaa0: <NVIDIA (0x0051) Audio Function Group> at nid 1 on hdacc0 > > pcm0: <NVIDIA (0x0051) (HDMI/DP 8ch)> at nid 5 on hdaa0 > > hdacc1: <Realtek ALC662 HDA CODEC> at cad 0 on hdac1 > > hdaa1: <Realtek ALC662 Audio Function Group> at nid 1 on hdacc1 > > pcm1: <Realtek ALC662 (Analog 2.0+HP/2.0)> at nid 20,27 and 24,26 on hdaa1 > > pcm2: <Realtek ALC662 (Analog)> at nid 21 and 25 on hdaa1 > > > > [per@konjak ~]$ mixer > > Mixer vol is currently set to 85:85 > > Mixer pcm is currently set to 100:100 > > Mixer speaker is currently set to 74:74 > > Mixer line is currently set to 1:1 > > Mixer mic is currently set to 90:90 > > Mixer mix is currently set to 74:74 > > Mixer rec is currently set to 85:85 > > Mixer igain is currently set to 100:100 > > Mixer ogain is currently set to 100:100 > > Recording source: mic > > > > Regards, > > > > Per Gunnarsson > > > > > > > > > > > > _______________________________________________ > > freebsd-questions@freebsd.org mailing list > > https://lists.freebsd.org/mailman/listinfo/freebsd-questions > > To unsubscribe, send any mail to "freebsd-questions- > > unsubscribe@freebsd.org" > > > > This could be any number of issues. > > 1) How's the ambient noise in your recording environment? > 2) Could be electronic noise from computer components [Is it a laptop or > desktop] > 3) The mic could have a very low noise floor, are u doing any filtering? > 4) Have you tried any other mic to see if it's the same? > > another thing, looking at your hdaa settings did you configure ur pin into > associations and groups? > That pinout looks a bit random. Also check for possible settings in other mixers (you probably have more than one): % mixer -f /dev/mixer0 % mixer -f /dev/mixer1 % mixer -f /dev/mixer2 ... Maybe the noise you're hearing is some amplified "interference" coming through a monitor channel; look for "monitor", "igain", "ogain". With a graphical mixer like xmixer or aumix-gtk, you can easily check the effects of those settings. -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...
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