1 ==============================================
2 Low latency, multichannel audio with JACK and
3 ==============================================
4
5 This document is a guide to using the emu10k1
6 latency, multichannel recording functionality.
7 Linux users to use the full capabilities of th
8 by the kX Project. Without their work I never
9 power of this hardware.
10
11 http://www.kxproject.com
12
13
14
15 Until recently, emu10k1 users on Linux did not
16 latency, multichannel features offered by the
17 Windows driver. As of ALSA 1.0.9 this is no m
18
19 For those unfamiliar with kX ASIO, this consis
20 channels. With a post 2.6.9 Linux kernel, lat
21 even 32 (0.66ms) frames should work well.
22
23 The configuration is slightly more involved th
24 select the correct device for JACK to use. Ac
25 fairly self explanatory - select Duplex, then
26 the multichannel devices, set the in and out c
27 rate to 48000Hz. The command line looks like
28 ::
29
30 /usr/local/bin/jackd -R -dalsa -r48000 -p64
31
32 This will give you 16 input ports and 16 outpu
33
34 The 16 output ports map onto the 16 FX buses (
35 Audigy). The mapping from FX bus to physical
36 sb-live-mixer.rst (or audigy-mixer.rst).
37
38 The 16 input ports are connected to the 16 phy
39 popular belief, all emu10k1 cards are multicha
40 input channels have physical inputs connected
41 model. Trial and error is highly recommended;
42 for the card have been reverse engineered by s
43 available on the internet. Meterbridge is hel
44 packed with useful information.
45
46 Each input port will either correspond to a di
47 input, or nothing. The one exception is the S
48 the second and third input ports are wired to
49 still see 16 capture channels, but only 14 are
50
51 This chart, borrowed from kxfxlib/da_asio51.cp
52 ports to FXBUS2 (multitrack recording input) a
53 channels.
54
55 JACK (& ASIO) mappings on 10k1 5.1 SBLive card
56
57 ============== ======== ============
58 JACK Epilog FXBUS2(nr)
59 ============== ======== ============
60 capture_1 asio14 FXBUS2(0xe)
61 capture_2 asio15 FXBUS2(0xf)
62 capture_3 asio0 FXBUS2(0x0)
63 ~capture_4 Center EXTOUT(0x11)
64 ~capture_5 LFE EXTOUT(0x12)
65 capture_6 asio3 FXBUS2(0x3)
66 capture_7 asio4 FXBUS2(0x4)
67 capture_8 asio5 FXBUS2(0x5)
68 capture_9 asio6 FXBUS2(0x6)
69 capture_10 asio7 FXBUS2(0x7)
70 capture_11 asio8 FXBUS2(0x8)
71 capture_12 asio9 FXBUS2(0x9)
72 capture_13 asio10 FXBUS2(0xa)
73 capture_14 asio11 FXBUS2(0xb)
74 capture_15 asio12 FXBUS2(0xc)
75 capture_16 asio13 FXBUS2(0xd)
76 ============== ======== ============
77
78 TODO: describe use of ld10k1/qlo10k1 in conjun
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