Date: Sat, 25 Apr 2015 07:55:07 +0200 From: Hans Petter Selasky <hps@selasky.org> To: "Russell L. Carter" <rcarter@pinyon.org>, freebsd-multimedia@freebsd.org Subject: Re: uaudio0 -> audacity not recording Message-ID: <553B2C3B.6050903@selasky.org> In-Reply-To: <553A7874.8080806@pinyon.org> References: <5536BC53.4070107@pinyon.org> <55375172.8040605@selasky.org> <553805E1.80303@pinyon.org> <553A20FA.2070801@selasky.org> <553A5A07.1080701@pinyon.org> <553A6659.2020808@selasky.org> <553A7874.8080806@pinyon.org>
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On 04/24/15 19:08, Russell L. Carter wrote: > Hi Hans, > > On 04/24/15 08:50, Hans Petter Selasky wrote: >> On 04/24/15 16:58, Russell L. Carter wrote: >>> >>> >>> On 04/24/15 03:54, Hans Petter Selasky wrote: >>> >>>> >>>> Could you check or dump: >>>> >>>> sysctl -a | grep pcm >>> >>> Sure... >>> >>> dev.pcm.%parent: >>> dev.pcm.0.%desc: USB audio >>> dev.pcm.0.%driver: pcm >>> dev.pcm.0.%location: >>> dev.pcm.0.%pnpinfo: >>> dev.pcm.0.%parent: uaudio0 >>> dev.pcm.0.hwvol_step: 5 >>> dev.pcm.0.hwvol_mixer: vol >>> dev.pcm.0.play.vchans: 4 >>> dev.pcm.0.play.vchanmode: fixed >>> dev.pcm.0.play.vchanrate: 48000 >>> dev.pcm.0.play.vchanformat: s16le:2.0 >>> dev.pcm.0.rec.vchans: 1 >>> dev.pcm.0.rec.vchanmode: fixed >>> dev.pcm.0.rec.vchanrate: 48000 >>> dev.pcm.0.rec.vchanformat: s16le:2.0 >>> dev.pcm.0.buffersize: 0 >>> dev.pcm.0.bitperfect: 0 >>> dev.pcm.0.mixer.vol_0_0.val: -8225 >>> dev.pcm.0.mixer.vol_0_0.min: -32768 >>> dev.pcm.0.mixer.vol_0_0.max: 0 >>> dev.pcm.0.mixer.vol_0_0.desc: USB Audio CODEC >>> dev.pcm.0.mixer.vol_0_1.val: -8225 >>> dev.pcm.0.mixer.vol_0_1.min: -32768 >>> dev.pcm.0.mixer.vol_0_1.max: 0 >>> dev.pcm.0.mixer.vol_0_1.desc: USB Audio CODEC >>> dev.pcm.0.mixer.mute_1.val: 0 >>> dev.pcm.0.mixer.mute_1.min: 0 >>> dev.pcm.0.mixer.mute_1.max: 1 >>> dev.pcm.0.mixer.mute_1.desc: USB Audio CODEC >>> dev.pcm.0.feedback_rate: 0 >>> >>> >> >> Hi, >> >> If you run: >> >> sysctl dev.pcm.0.mixer.vol_0_0.val=-16000 >> sysctl dev.pcm.0.mixer.vol_0_1.val=-16000 >> >> Does it make any difference? > > No difference, still garbled noise being output by rec. Rec appears > to be receiving bits from the audio adapter; if I stop the audio > source, the monitor correctly goes to zero. I raised mixer pcm from > 75 to 100, and now I can hear in the garbled noise some tones that > sound like they might be from the source. > >> Also try play with: >> >> sysctl dev.pcm.0.mixer.mute_1.val=0 > > This is where it is to begin with, so no effect. To be precise, I can > hear the garbled output on 'play output.flac'. > >> sysctl dev.pcm.0.mixer.mute_1.val=1 > > And this causes the 'play output.flac' to be silent, even as the > monitor is registering the same as before (about half the indicated > max level for both channels). > > Thanks for taking a look at this. > > Russell > Hi, Could you record this noise through another audio device and send me a link? Maybe your audio adapter is broken ... --HPS
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