So nobody heard these before? or did I do something stupid that anyone
should know and nobody wanted to yell at me for it ;)
On Wed, 2006-02-08 at 12:54 -0600, Gerard Saraber wrote:> Hi,
> I've got some weird sound artifacts happening during calls, they're
very
> hard to describe, so I have a 122kb recording:
> http://openprojects.rarcoa.com/~miztic/artifact.wav
> normally the artifacts are just short blips, not quite as long as the
> one above, but they sound the same.
> When using the aggressive echo suppressor, it seems like those artifacts
> cause a really loud buzzing sound to come out of the cisco phone, pretty
> much made using the aggressive canceler impossible to use, it's too bad
> because it worked the best out of all of them, mark3 works ok but still
> gives echos on at least 20% of the calls.
>
> I thought they might be caused by IRQ sharing, so I pulled one of the
> TDM400P cards out and made sure the remaining two were on their own IRQ,
> the artifacts were still there. I've also tried running a kernel with
> all the low-latency stuff turned on, and the same kernel with it all
> turned off (2.6.16-rc2) doesn't appear to make any difference either.
> I'm not sure what else to try, any input would be appreciated.
>
> Thanks,
> Gerard Saraber
> gsaraber@rarcoa.com
>
> hardware:
> AMD64 1.8Ghz 512M ram
> MSI nforce3 socket 754 mainboard
> 3 Digium TDM400P cards, 10 FXO + 2 FXS modules
>
> /proc/interrupts
> CPU0
> 0: 2784232 IO-APIC-edge timer
> 1: 8 IO-APIC-edge i8042
> 8: 0 IO-APIC-edge rtc
> 9: 0 IO-APIC-level acpi
> 177: 71552 IO-APIC-level eth0
> 185: 9412 IO-APIC-level libata, NVidia CK8S
> 193: 0 IO-APIC-level ehci_hcd:usb1
> 201: 0 IO-APIC-level ohci_hcd:usb2
> 209: 0 IO-APIC-level ohci_hcd:usb3
> 217: 5577811 IO-APIC-level wctdm, wctdm
> 225: 2769262 IO-APIC-level wctdm
>
> lspci (for completeness):
>
> 02:07.0 Network controller: Tiger Jet Network Inc. Tiger3XX Modem/ISDN
> interface
> Subsystem: Unknown device b119:0001
> Flags: bus master, medium devsel, latency 32, IRQ 217
> I/O ports at ac00 [size=256]
> Memory at fdeff000 (32-bit, non-prefetchable) [size=4K]
> Capabilities: [40] Power Management version 2
>
> 02:09.0 Network controller: Tiger Jet Network Inc. Tiger3XX Modem/ISDN
> interface
> Subsystem: Unknown device b119:0001
> Flags: bus master, medium devsel, latency 32, IRQ 225
> I/O ports at a800 [size=256]
> Memory at fdefe000 (32-bit, non-prefetchable) [size=4K]
> Capabilities: [40] Power Management version 2
>
> 02:0a.0 Network controller: Tiger Jet Network Inc. Tiger3XX Modem/ISDN
> interface
> Subsystem: Unknown device b119:0001
> Flags: bus master, medium devsel, latency 32, IRQ 217
> I/O ports at a400 [size=256]
> Memory at fdefd000 (32-bit, non-prefetchable) [size=4K]
> Capabilities: [40] Power Management version 2
>
>
--
Regards,
Gerard Saraber
Network Admin, Rarcoa, Inc.
(630) 654-2580 x11
gsaraber@rarcoa.com