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authorTakashi Iwai2016-11-10 16:31:07 +0100
committerTakashi Iwai2016-11-10 22:33:22 +0100
commite7030c96fc0e08b9d1c4fb1cbedb326a3f46dad3 (patch)
tree8a6ae356bdc57b8e5b9185e267e791cf91123f2e /Documentation/sound/alsa
parent72e69166714bfa7bfafb7a06a8499de472299ab9 (diff)
ALSA: doc: ReSTize emu10k1-jack.txt
Another simple conversion from a plain text file. Put to cards directory. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'Documentation/sound/alsa')
-rw-r--r--Documentation/sound/alsa/emu10k1-jack.txt74
1 files changed, 0 insertions, 74 deletions
diff --git a/Documentation/sound/alsa/emu10k1-jack.txt b/Documentation/sound/alsa/emu10k1-jack.txt
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-This document is a guide to using the emu10k1 based devices with JACK for low
-latency, multichannel recording functionality. All of my recent work to allow
-Linux users to use the full capabilities of their hardware has been inspired
-by the kX Project. Without their work I never would have discovered the true
-power of this hardware.
-
- http://www.kxproject.com
- - Lee Revell, 2005.03.30
-
-Low latency, multichannel audio with JACK and the emu10k1/emu10k2
------------------------------------------------------------------
-
-Until recently, emu10k1 users on Linux did not have access to the same low
-latency, multichannel features offered by the "kX ASIO" feature of their
-Windows driver. As of ALSA 1.0.9 this is no more!
-
-For those unfamiliar with kX ASIO, this consists of 16 capture and 16 playback
-channels. With a post 2.6.9 Linux kernel, latencies down to 64 (1.33 ms) or
-even 32 (0.66ms) frames should work well.
-
-The configuration is slightly more involved than on Windows, as you have to
-select the correct device for JACK to use. Actually, for qjackctl users it's
-fairly self explanatory - select Duplex, then for capture and playback select
-the multichannel devices, set the in and out channels to 16, and the sample
-rate to 48000Hz. The command line looks like this:
-
-/usr/local/bin/jackd -R -dalsa -r48000 -p64 -n2 -D -Chw:0,2 -Phw:0,3 -S
-
-This will give you 16 input ports and 16 output ports.
-
-The 16 output ports map onto the 16 FX buses (or the first 16 of 64, for the
-Audigy). The mapping from FX bus to physical output is described in
-SB-Live-mixer.txt (or Audigy-mixer.txt).
-
-The 16 input ports are connected to the 16 physical inputs. Contrary to
-popular belief, all emu10k1 cards are multichannel cards. Which of these
-input channels have physical inputs connected to them depends on the card
-model. Trial and error is highly recommended; the pinout diagrams
-for the card have been reverse engineered by some enterprising kX users and are
-available on the internet. Meterbridge is helpful here, and the kX forums are
-packed with useful information.
-
-Each input port will either correspond to a digital (SPDIF) input, an analog
-input, or nothing. The one exception is the SBLive! 5.1. On these devices,
-the second and third input ports are wired to the center/LFE output. You will
-still see 16 capture channels, but only 14 are available for recording inputs.
-
-This chart, borrowed from kxfxlib/da_asio51.cpp, describes the mapping of JACK
-ports to FXBUS2 (multitrack recording input) and EXTOUT (physical output)
-channels.
-
-/*JACK (& ASIO) mappings on 10k1 5.1 SBLive cards:
---------------------------------------------
-JACK Epilog FXBUS2(nr)
---------------------------------------------
-capture_1 asio14 FXBUS2(0xe)
-capture_2 asio15 FXBUS2(0xf)
-capture_3 asio0 FXBUS2(0x0)
-~capture_4 Center EXTOUT(0x11) // mapped to by Center
-~capture_5 LFE EXTOUT(0x12) // mapped to by LFE
-capture_6 asio3 FXBUS2(0x3)
-capture_7 asio4 FXBUS2(0x4)
-capture_8 asio5 FXBUS2(0x5)
-capture_9 asio6 FXBUS2(0x6)
-capture_10 asio7 FXBUS2(0x7)
-capture_11 asio8 FXBUS2(0x8)
-capture_12 asio9 FXBUS2(0x9)
-capture_13 asio10 FXBUS2(0xa)
-capture_14 asio11 FXBUS2(0xb)
-capture_15 asio12 FXBUS2(0xc)
-capture_16 asio13 FXBUS2(0xd)
-*/
-
-TODO: describe use of ld10k1/qlo10k1 in conjunction with JACK