<html> <head> <meta content="text/html; charset=utf-8" http-equiv="Content-Type"> </head> <body bgcolor="#FFFFFF" text="#000000"> WIth speaker-test in 2.1 and 4.1 modes I do not hear LFE in either of 6 available outputs, I've tried it as: <blockquote> speaker-test -D surround21:CARD=S51 -c 3 -l 1 speaker-test -D surround41:CARD=S51 -c 5 -l 1 </blockquote> WIth all other modes I can hear sound in correct outputs. Following command results in correct sound on 2/6 outputs correspondingly: <blockquote> speaker-test -D hw:S51 -c 2 -l 1 speaker-test -D hw:S51 -c 6 -l 1 </blockquote> Interestingly: <blockquote> ~> speaker-test -D hw:S51 -c 4 -l 1 speaker-test 1.1.0 Playback device is hw:S51 Stream parameters are 48000Hz, S16_LE, 4 channels Using 16 octaves of pink noise Channels count (4) not available for playbacks: Invalid argument Setting of hwparams failed: Invalid argument </blockquote> Requested details: <blockquote> ~> cat /proc/asound/cards 0 [HDMI ]: HDA-Intel - HDA Intel HDMI HDA Intel HDMI at 0xf7b14000 irq 39 1 [PCH ]: HDA-Intel - HDA Intel PCH HDA Intel PCH at 0xf7b10000 irq 38 2 [S51 ]: USB-Audio - SB Omni Surround 5.1 Creative Technology Ltd SB Omni Surround 5.1 at usb-0000:00:14.0-6, full speed </blockquote> So, generic USB-Audio. <pre class="moz-signature" cols="72">Sincerely, Nazar Mokrynskyi github.com/nazar-pc Skype: nazar-pc Diaspora: <a class="moz-txt-link-abbreviated" href="mailto:nazarpc@diaspora.mokrynskyi.com">nazarpc@diaspora.mokrynskyi.com</a> Tox: A9D95C9AA5F7A3ED75D83D0292E22ACE84BA40E912185939414475AF28FD2B2A5C8EF5261249</pre> <div class="moz-cite-prefix">On 16.01.16 14:10, Tom Yan wrote: </div> <blockquote cite="mid:CAGnHSEmgjGTS441BpqdeA8yX2-rHV-Jjz+g-tPcw5SyvRAB4uA@mail.gmail.com" type="cite"> <pre wrap="">NVM I was probably wrong about those two confs. FWIW, here are the speaker-test results of my builtin 7.1 audio (HDA Intel PCH/Realtek ALC887-VD), when I have my only pair of stereo speaker connected to the Center/Subwoofer port: Firstly I tested with: speaker-test -D hw:PCH -c 2 -l 1 speaker-test -D hw:PCH -c 4 -l 1 speaker-test -D hw:PCH -c 6 -l 1 speaker-test -D hw:PCH -c 8 -l 1 These 4 are the layout that support natively by the driver/hardware. Interestingly, for: speaker-test -D hw:PCH -c 2 -l 1 speaker-test -D hw:PCH -c 4 -l 1 I can hear sound coming out from my speakers respectively when: 0 - Front Left 1 - Front Right is playing. But while I did NOT change the physical connection at all, for these: speaker-test -D hw:PCH -c 6 -l 1 speaker-test -D hw:PCH -c 8 -l 1 I can hear sound coming out from my speakers respectively when: 4 - Front Center (LEFT speaker) 5 - LFE (RIGHT speaker) is playing. Then I test with: speaker-test -D surround21:CARD=PCH,DEV=0 -c 3 -l 1 speaker-test -D surround41:CARD=PCH,DEV=0 -c 5 -l 1 speaker-test -D surround50:CARD=PCH,DEV=0 -c 5 -l 1 which are the only 3 PCMs with ttable in their conf. For: speaker-test -D surround21:CARD=PCH,DEV=0 -c 3 -l 1 I can hear sound coming out from my RIGHT speaker when: 2 - LFE is playing. For: speaker-test -D surround41:CARD=PCH,DEV=0 -c 5 -l 1 I can hear sound coming out from my RIGHT speaker when: 4 - LFE is playing. For: speaker-test -D surround50:CARD=PCH,DEV=0 -c 5 -l 1 I can hear sound coming out from my LEFT speaker when: 4 - Front Center is playing. I think you can test with similar commands. The only part you need to change is probably "PCH". Also the one with "-c 8" probably won't work on your device. Last but not least, can you paste your output of: cat /proc/asound/cards So that we can get an idea on which conf in /usr/share/alsa/cards/ is your card relying on? On 16 January 2016 at 17:59, Tom Yan <a class="moz-txt-link-rfc2396E" href="mailto:tom.ty89@gmail.com"><tom.ty89@gmail.com></a> wrote: </pre> <blockquote type="cite"> <pre wrap="">I think you should use speaker-test to test the various PCMs in aplay -L first, so that you can at least get a hint on whether it has something to do with ALSA or pulse. For example: [tom@localhost ~]$ speaker-test -D surround21:CARD=PCH,DEV=0 -c 3 -l 1 speaker-test 1.1.0 Playback device is surround21:CARD=PCH,DEV=0 Stream parameters are 48000Hz, S16_LE, 3 channels Using 16 octaves of pink noise Rate set to 48000Hz (requested 48000Hz) Buffer size range from 22 to 349525 Period size range from 11 to 174762 Using max buffer size 349524 Periods = 4 was set period_size = 87381 was set buffer_size = 349524 0 - Front Left 1 - Front Right 2 - LFE Time per period = 5.470904 [tom@localhost ~]$ speaker-test -D surround41:CARD=PCH,DEV=0 -c 5 -l 1 speaker-test 1.1.0 Playback device is surround41:CARD=PCH,DEV=0 Stream parameters are 48000Hz, S16_LE, 5 channels Using 16 octaves of pink noise Rate set to 48000Hz (requested 48000Hz) Buffer size range from 22 to 349525 Period size range from 11 to 174762 Using max buffer size 349524 Periods = 4 was set period_size = 87381 was set buffer_size = 349524 0 - Front Left 1 - Front Right 3 - Rear Right 2 - Rear Left 4 - LFE Time per period = 9.121826 [tom@localhost ~]$ speaker-test -D surround51:CARD=PCH,DEV=0 -c 6 -l 1 speaker-test 1.1.0 Playback device is surround51:CARD=PCH,DEV=0 Stream parameters are 48000Hz, S16_LE, 6 channels Using 16 octaves of pink noise Rate set to 48000Hz (requested 48000Hz) Buffer size range from 22 to 349525 Period size range from 11 to 174762 Using max buffer size 349524 Periods = 4 was set period_size = 87381 was set buffer_size = 349524 0 - Front Left 4 - Front Center 1 - Front Right 3 - Rear Right 2 - Rear Left 5 - LFE Time per period = 10.953665 [tom@localhost ~]$ I do feel like surround21.conf and surround41.conf is problematic though. I don't see why it should map LFE that way if it relys on surround51. It should be always "5 - LFE". I'll probably write to ALSA devel about it soon. On 16 January 2016 at 17:32, Nazar Mokrynskyi <a class="moz-txt-link-rfc2396E" href="mailto:nazar@mokrynskyi.com"><nazar@mokrynskyi.com></a> wrote: </pre> <blockquote type="cite"> <pre wrap="">Noise appears when I test speaker in sound settings UI, so there is no specific command. Also, when test sound stops - clicking doesn't. I know it doesn't make sense, but it is what it is. BTW, noise appears in target output, meaning even if I do not skip output, but try to direct LFE to third output (one of rear speakers), there is no sound there, only mentioned noise. Is it possible that sound card doesn't want to output low frequency sound on other than default output, I mean some hardware/firmware limitation? I'd be fine if LFE worked with 3rd output instead of 6th. Sincerely, Nazar Mokrynskyi github.com/nazar-pc Skype: nazar-pc Diaspora: <a class="moz-txt-link-abbreviated" href="mailto:nazarpc@diaspora.mokrynskyi.com">nazarpc@diaspora.mokrynskyi.com</a> Tox: A9D95C9AA5F7A3ED75D83D0292E22ACE84BA40E912185939414475AF28FD2B2A5C8EF5261249 On 16.01.16 10:24, Tom Yan wrote: </pre> <blockquote type="cite"> <pre wrap=""> Sorry, I meant surround21. On 16 January 2016 at 17:21, Tom Yan <a class="moz-txt-link-rfc2396E" href="mailto:tom.ty89@gmail.com"><tom.ty89@gmail.com></a> wrote: </pre> <blockquote type="cite"> <pre wrap=""> What do you mean by "noise in nth output starting from 1 instead, relatively hight frequency light clicking"? How were you testing exactly? speaker-test? if so what're the "-D"s you used? Can you paste full commands (and maybe even the text output). What you said doesn't seem to make sense. If surround51 works, then surround41 and surround20 should at most cause a signal/speaker mismatch. I don't see how it can produce some weird noise/click. On 16 January 2016 at 16:26, Nazar Mokrynskyi <a class="moz-txt-link-rfc2396E" href="mailto:nazar@mokrynskyi.com"><nazar@mokrynskyi.com></a> wrote: </pre> <blockquote type="cite"> <pre wrap=""> OK, I've spent another hour or so trying different combinations and it seems to be a bug inside either ALSA or PulseAudio. SB Omni Surround 5.1, as you can see from name, has 6 outputs: front-left,front-right,rear-left,rear-right,front-center,lfe (lets ignore other non-related inputs/outputs here) I've done many experiments and defined which modes are working and which doesn't. Modes that work fine: - 5.1 - 5.0 - 4.0 - 2.0 Modes that doesn't work fine: - 2.1 (stereo only, noise in 3rd output starting from 1 instead, relatively hight frequency light clicking) - 4.1 (quadro only, noise in 5th output starting from 1 instead, relatively hight frequency light clicking) It is clearly visible that any time I want to skip some output, for instance: ttable.0.FL 1 ttable.1.FR 1 ttable.5.LFE 1 instead of ttable.0.FL 1 ttable.1.FR 1 ttable.2.LFE 1 To direct LFE to proper output it doesn't work. This is the same reason why 5.0 is working fine (no skipped outputs, all consequent) and 4.1 doesn't (we need to skip 5th output starting from 1 and use 6th instead). When I try this: ttable.0.FL 1 ttable.2.FR 1 ttable.1.LFE 1 then as expected I can hear LFE in right front output. Any hints from anyone what is wrong here? There are literally NO DOCS about how it works internally, so these experiments all I can provide at the moment. There were pulseaudio logs in this thread if anyone needs details. ALSA 1.1.0, PulseAudio 7.1, Ubuntu 16.04 x64 Sincerely, Nazar Mokrynskyi github.com/nazar-pc Skype: nazar-pc Diaspora: <a class="moz-txt-link-abbreviated" href="mailto:nazarpc@diaspora.mokrynskyi.com">nazarpc@diaspora.mokrynskyi.com</a> Tox: A9D95C9AA5F7A3ED75D83D0292E22ACE84BA40E912185939414475AF28FD2B2A5C8EF5261249 On 28.11.15 09:56, Raymond Yau wrote: </pre> <blockquote type="cite"> <pre wrap="">I've been looking at those lines. Do you think it should be done in USB-Audio, or should it be added into separate config file specific for this sound card? </pre> </blockquote> <pre wrap=""> <a class="moz-txt-link-freetext" href="http://git.alsa-project.org/?p=alsa-lib.git;a=blob;f=src/conf/pcm/surround21.conf;hb=HEAD">http://git.alsa-project.org/?p=alsa-lib.git;a=blob;f=src/conf/pcm/surround21.conf;hb=HEAD</a> The route of surround21 is hardcoded to use surround51 , this mean your ttable are used by those usb audio support 6 channels, those usb audio which only support 8 channels need to define their own 21 route as both surround51 and surround71 of usb audio use route plugin _______________________________________________ pulseaudio-discuss mailing list <a class="moz-txt-link-abbreviated" href="mailto:pulseaudio-discuss@lists.freedesktop.org">pulseaudio-discuss@lists.freedesktop.org</a> <a class="moz-txt-link-freetext" href="http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss">http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss</a> _______________________________________________ pulseaudio-discuss mailing list <a class="moz-txt-link-abbreviated" href="mailto:pulseaudio-discuss@lists.freedesktop.org">pulseaudio-discuss@lists.freedesktop.org</a> <a class="moz-txt-link-freetext" href="http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss">http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss</a> </pre> </blockquote> </blockquote> <pre wrap="">_______________________________________________ pulseaudio-discuss mailing list <a class="moz-txt-link-abbreviated" href="mailto:pulseaudio-discuss@lists.freedesktop.org">pulseaudio-discuss@lists.freedesktop.org</a> <a class="moz-txt-link-freetext" href="http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss">http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss</a> </pre> </blockquote> <pre wrap=""> _______________________________________________ pulseaudio-discuss mailing list <a class="moz-txt-link-abbreviated" href="mailto:pulseaudio-discuss@lists.freedesktop.org">pulseaudio-discuss@lists.freedesktop.org</a> <a class="moz-txt-link-freetext" href="http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss">http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss</a> </pre> </blockquote> </blockquote> <pre wrap="">_______________________________________________ pulseaudio-discuss mailing list <a class="moz-txt-link-abbreviated" href="mailto:pulseaudio-discuss@lists.freedesktop.org">pulseaudio-discuss@lists.freedesktop.org</a> <a class="moz-txt-link-freetext" href="http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss">http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss</a> </pre> </blockquote> </body> </html>