Date: Sat, 14 Oct 2017 23:28:04 +0200 From: Hans Petter Selasky <hps@selasky.org> To: Alexander Leidinger <Alexander@leidinger.net>, Gary Jennejohn <gljennjohn@gmail.com> Cc: freebsd-usb@freebsd.org Subject: Re: uaudio - distorted output Message-ID: <1cf688d5-40e5-02a8-a90b-462221c8b8d6@selasky.org> In-Reply-To: <20171014170053.Horde.QzVYNRV5LzWL1QougXx4G4l@webmail.leidinger.net> 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> <20171014170053.Horde.QzVYNRV5LzWL1QougXx4G4l@webmail.leidinger.net>
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On 10/14/17 17:00, Alexander Leidinger wrote: > 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)? The XHCI has a better scheduler for high-speed and full-speed isochronous transfers especially when going through an external high-speed hub. --HPS
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