On 08/02/2013 03:34 PM, Arun Raghavan wrote: > On Fri, 2013-08-02 at 15:19 +0200, David Henningsson wrote: >> Some HD-audio codecs (at least ALC269VB and ALC283) become quite noisy on >> high Mic Boost levels. So e g, if there is a "Mic Boost" and a "Capture" >> control, both ranging from 0 dB to +30 dB, you get better quality if >> "Mic Boost" is 0 dB and "Capture" is +30 dB, than the other way around. >> >> By changing the order in the configuration files, this patch makes us prefer >> leaving "Mic Boost" low and "Capture" high if the user selects a medium gain. >> >> (This is based on limited experience, and there is no guarantee that there >> are >> no sound cards that work the other way around, and therefore this patch could >> potentially regress quality on those machines. Hopefully those are fewer, so >> this is what we should default to.) > [...] >> diff --git a/src/modules/alsa/mixer/paths/analog-input-headphone-mic.conf >> b/src/modules/alsa/mixer/paths/analog-input-headphone-mic.conf >> index 688b8ac..3a19e01 100644 >> --- a/src/modules/alsa/mixer/paths/analog-input-headphone-mic.conf >> +++ b/src/modules/alsa/mixer/paths/analog-input-headphone-mic.conf >> @@ -27,21 +27,21 @@ description-key = analog-input-microphone >> required-any = any >> state.plugged = unknown >> >> -[Element Headphone Mic Boost] >> -required-any = any >> -switch = select >> +[Element Capture] >> +switch = mute >> volume = merge >> override-map.1 = all >> override-map.2 = all-left,all-right >> >> -[Element Headphone Mic] >> +[Element Headphone Mic Boost] > > If we're doing this, might as well prefer Headphone Mic over Headphone > Mic Boost?
We could, but I'd rather have some sort of evidence/indication that this will actually make a difference first. For starters, it's unusual to have both "Headphone Mic" and "Headphone Mic Boost" on the same sound card. Also, we're moving this around because we have empirical experience that hardware behaves this way, not because it is logical for hardware to do so. Hence I'd refrain from extending the same logic to other controls. Btw, the reason I'm moving "Capture" rather than the Mic Boosts is that I remember sometimes boosts are labelled "xx Mic" instead "xx Mic Boost", even though they are boosts and could potentially work the same way (become noisy at high levels). >> required-any = any >> -switch = mute >> +switch = select >> volume = merge >> override-map.1 = all >> override-map.2 = all-left,all-right >> >> -[Element Capture] >> +[Element Headphone Mic] >> +required-any = any >> switch = mute >> volume = merge >> override-map.1 = all > [...] >> diff --git >> a/src/modules/alsa/mixer/paths/analog-input-internal-mic-always.conf >> b/src/modules/alsa/mixer/paths/analog-input-internal-mic-always.conf >> index cd08531..e9c288e 100644 >> --- a/src/modules/alsa/mixer/paths/analog-input-internal-mic-always.conf >> +++ b/src/modules/alsa/mixer/paths/analog-input-internal-mic-always.conf >> @@ -39,6 +39,12 @@ state.unplugged = unknown >> state.plugged = no >> state.unplugged = unknown >> >> +[Element Capture] >> +switch = mute >> +volume = merge >> +override-map.1 = all >> +override-map.2 = all-left,all-right >> + >> [Element Internal Mic Boost] >> switch = select >> volume = merge >> @@ -63,7 +69,6 @@ name = input-boost-on >> [Option Int Mic Boost:off] >> name = input-boost-off > > Again, maybe Boost should be after both Internal Mic? > >> - >> [Element Internal Mic] >> switch = mute >> volume = merge >> @@ -76,12 +81,6 @@ volume = merge >> override-map.1 = all >> override-map.2 = all-left,all-right >> >> -[Element Capture] >> -switch = mute >> -volume = merge >> -override-map.1 = all >> -override-map.2 = all-left,all-right >> - >> [Element Input Source] >> enumeration = select >> >> diff --git a/src/modules/alsa/mixer/paths/analog-input-internal-mic.conf >> b/src/modules/alsa/mixer/paths/analog-input-internal-mic.conf >> index ae3e9a8..5424a1b 100644 >> --- a/src/modules/alsa/mixer/paths/analog-input-internal-mic.conf >> +++ b/src/modules/alsa/mixer/paths/analog-input-internal-mic.conf >> @@ -44,6 +44,12 @@ state.plugged = unknown >> state.unplugged = unknown >> required-any = any >> >> +[Element Capture] >> +switch = mute >> +volume = merge >> +override-map.1 = all >> +override-map.2 = all-left,all-right >> + >> [Element Internal Mic Boost] >> required-any = any >> switch = select >> @@ -70,7 +76,6 @@ name = input-boost-on >> [Option Int Mic Boost:off] >> name = input-boost-off > > Same comment here. > > Rest looks good to me. Ok, can I push this one as it is then? There's nothing stopping us from switching "Headphone Mic" and "Headphone Mic Boost" too, if we want to do so later. -- David Henningsson, Canonical Ltd. https://launchpad.net/~diwic -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/1085402 Title: PulseAudio overuses 'Boost' control of microphone input producing bad audio quality Status in “pulseaudio” package in Ubuntu: Triaged Bug description: Om my notebook PulseAudio detects 2 ports on embedded sound card: 1) analog-input-microphone-internal 2) analog-input-microphone PulseAudio module "module-switch-on-port-available" chooses as default port #2 after external microphone is attached and switches back to port #1 after external mike removal. This behavior seems right. However, if I record sound with auto selected port, audio quality is very poor. There is loud noise in background. But if I switch to "wrong" port audio quality becomes great. E.g. I have to manually select "analog-input-microphone-internal" port when I attach external mike and vice versa. Example of record: http://self-perfection.homeip.net/files/2012/external_ru.flac (652 KiB) This record is made via headset microphone. During first half of record source port analog-input-microphone was selected then i switched to port analog-input-microphone-internal. ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: pulseaudio 1:2.1-0ubuntu4 ProcVersionSignature: Ubuntu 3.5.0-18.29-generic 3.5.7 Uname: Linux 3.5.0-18-generic x86_64 ApportVersion: 2.6.1-0ubuntu6 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: self 2150 F.... pulseaudio self 2255 F.... xfce4-volumed Date: Sat Dec 1 16:34:31 2012 InstallationDate: Installed on 2012-07-01 (152 days ago) InstallationMedia: Xubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425) MarkForUpload: True SourcePackage: pulseaudio UpgradeStatus: Upgraded to quantal on 2012-10-21 (40 days ago) dmi.bios.date: 04/03/2012 dmi.bios.vendor: Phoenix Technologies Ltd. dmi.bios.version: 06QB dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: 300E4Z/300E5Z/300E7Z dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.board.version: FAB1 dmi.chassis.asset.tag: Asset Tag dmi.chassis.type: 9 dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.chassis.version: 0.1 dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr06QB:bd04/03/2012:svnSAMSUNGELECTRONICSCO.,LTD.:pn300E4Z/300E5Z/300E7Z:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rn300E4Z/300E5Z/300E7Z:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1: dmi.product.name: 300E4Z/300E5Z/300E7Z dmi.product.version: 0.1 dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD. 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