Date: Sat, 14 Oct 2017 17:00:53 +0200 From: Alexander Leidinger <Alexander@leidinger.net> To: Gary Jennejohn <gljennjohn@gmail.com> Cc: Hans Petter Selasky <hps@selasky.org>, freebsd-usb@freebsd.org Subject: Re: uaudio - distorted output Message-ID: <20171014170053.Horde.QzVYNRV5LzWL1QougXx4G4l@webmail.leidinger.net> In-Reply-To: <20171011060734.6db69d1e@ernst.home> References: <20171008125631.Horde.ZsqSFDr1-uiT1YrkgH5i0tF@webmail.leidinger.net> <633f23dd-3b61-fe17-b894-6b1221a5dfd4@selasky.org> <20171008142514.Horde.hRkzth4Ur4wvjgUIlWuc70c@webmail.leidinger.net> <21e04dc4-045d-fb30-337a-7f7bd4fe8b50@selasky.org> <20171008230836.Horde.gG7VyE_62V3bMJX_VtbUrAP@webmail.leidinger.net> <85f5fd9a-2a58-9f5d-6796-716aae617274@selasky.org> <20171009210535.Horde.-orp9MzE2_7XgkKpP7K9L4J@webmail.leidinger.net> <9399c2dc-b514-fd0f-3401-57d43daad96b@selasky.org> <20171009214747.Horde.6Me9X2nep_RP1M2tHVDmKxq@webmail.leidinger.net> <de20c0f8-76b1-7ab5-c2b3-7ca5c2f9d087@selasky.org> <20171010201437.Horde.akunLS7Olg1TP_2Xo07fLI3@webmail.leidinger.net> <20171011060734.6db69d1e@ernst.home>
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[-- Attachment #1 --] Quoting Gary Jennejohn <gljennjohn@gmail.com> (from Wed, 11 Oct 2017 06:07:34 +0200): > On Tue, 10 Oct 2017 20:14:37 +0200 > Alexander Leidinger <Alexander@leidinger.net> wrote: > >> Quoting Hans Petter Selasky <hps@selasky.org> (from Mon, 9 Oct 2017 >> 22:38:32 +0200): >> >> > On 10/09/17 21:47, Alexander Leidinger wrote: >> >>> If you are using multi channel audio equipment with 24-bits, >> try >>> to avoid FULL-speed ones! >> >> I have now tried every single USB connector, external and internal. >> None of them attaches to the EHCI bus. :( The only connector which >> Iwas not able to test is labeled "USB SSD" and has a smaller >> pin-gridthan those other internal usb-PIN-connectors with cables to >> the frontof the case. >> >> I think I will now buy a PCIe USB3.0 card. Anything I should avoid? >> Anything you recommend? I found this: >> >> www.amazon.de/CSL-Express-Controller-SATA-Stromanschluss-Schnittstellenkart >> e/dp/B00OBACW0G >> which seems to have some VLI chip on it. I haven't found anything >> usable in terms of vendor/product ID or such. >> 4 ports may be enough, for an external USB backup HD, the >> soundcard, and a video device, but for ~10 EUR difference... >> > > I've been using the CSL B00F9XGPTI XHCI 4-port card which works. I > bought it on amazon.de, but I don't know whether it's still available. I bought the one I had listed. Works. I did a short Amazon review which mentions FreeBSD. >> >> Well... first I want to get the 2 channel 16bit case working... >> >> then I will have a look at extending this to 5.1 (most probably >> >> 16bit, that's enough to watch action movies). >> > >> > Hi, >> > >> > Some more ideas: >> > >> > 2 channel 16 bit will only work if you turn off bitperfect. The >> >> I activated bitperfect as a test because I got the distortion and >> was hoping to either gain some lower-latency or at least get rid of >> somelayers of code to rule out issues there. >> >> > lowest number of channels the device exports is 4 for playback. >> That> means the kernel will re-format 2 channels to 4 channels >> always and> that is done by the PCM feeder. You'll need to check >> that there is a> filter which handle that. >> > >> > You might want to install virtual_oss from ports to handle this > >> device properly. >> >> In the end I want 5.1 output, so if the bus speed doesn't give me >> this: no need to waste our time with the slow ports. It looks like this now (here the second uaudio device is attached): ---snip--- ugen8.1: <0x1106 XHCI root HUB> at usbus8, cfg=0 md=HOST spd=SUPER (5.0Gbps) pwr=SAVE (0mA) ugen8.2: <vendor 0x2109 USB2.0 Hub> at usbus8, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=SAVE (100mA) ugen8.3: <VIA Labs, Inc. USB2.0 Hub> at usbus8, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=SAVE (0mA) ugen8.4: <vendor 0x0d8c USB Sound Device> at usbus8, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (500mA) ugen8.5: <VIA Labs, Inc. USB3.0 Hub> at usbus8, cfg=0 md=HOST spd=SUPER (5.0Gbps) pwr=SAVE (0mA) ---snip--- What I don't understand is it tells spd=FULL, so the device is not doing faster as it theoretically can do on the mainboard-usb device. Why does it work better (no audio distortion when connected to the xhci device)? I also tried 5.1 output (data goes via optical connection to the pre-amp/DAC). dev.pcm.2.bitperfect: 0 dev.pcm.2.buffersize: 0 dev.pcm.2.rec.vchanformat: s16le:2.0 dev.pcm.2.rec.vchanrate: 48000 dev.pcm.2.rec.vchanmode: fixed dev.pcm.2.rec.vchans: 1 dev.pcm.2.play.vchanformat: s16le:5.1 dev.pcm.2.play.vchanrate: 48000 dev.pcm.2.play.vchanmode: passthrough dev.pcm.2.play.vchans: 1 Audio comes out of all 5 speakers, but somehow I have the impression I get the same output everywhere... I need to download a 5.1 test and see. But this is another issue now. Thanks! Alexander. -- http://www.Leidinger.net Alexander@Leidinger.net: PGP 0x8F31830F9F2772BF http://www.FreeBSD.org netchild@FreeBSD.org : PGP 0x8F31830F9F2772BF [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJZ4ialAAoJEKrxQhqFIICEhpQP/3OMSftLBiKtxq2fnV7pFaSR Ia9EfUkdyd5C83nB7VXlL0dk2+r/+5vTwDbrdLMNtKxf02TXQZXsc1om52yBaOOr uAH/X0isvWHwkFv2IF0D1EJscclN8STwpSgfQUo9X3g8tpFKPFLbjxbyuhYnRW3b vWhXUZAuUHHm9Vgp/NfpQnEYoN45RYJVyyPUdxVG9drPPbR1GFxTixxoF4GxP+OQ Icw2gte72mxU3Sg8Pj5uwMC0FTO8dncRi4fxsJ1S9CMCHyX4qk52kGeZM6r4Qxnv 3/IYgJuFh7shxAd4p1YKVaUMd/94DkrojyQT9siQ3WvQzTE4YWVUxnety1Y+2sot xZ3D2jgyVoAUuJex7VpWCNpbJrtemk6dfbFG0KHJl+Ex3A7NN5COAonLAR+QVsUb l7K2qlUxbzIPDGUV1MuzflKKhpQ0lc2/FX8mClHyOXqigjdBvufJrqpvixudcZBh l0zmAVzKl8ntdel32kwuRc/9EHfuP3CgiKzo5cRf2dvtBs2LgmRWlZ78r0fxjnJU fioZMRgnwjMz+2geW0TnHSuI7C7QUJNMQC9plIBuo3v2CsoIyBGB4TacLyWZMayh Fwh7Ozn87/KlyzyOY8Sr/75jiJwWe/XEN2BqifUs23VBFbB2qnzAi6uYnl2wb3q7 QCBQNDI8icAotirVPWwi =b8og -----END PGP SIGNATURE-----
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