23 Oct
2013
23 Oct
'13
2:18 p.m.
On Wed, 2013-10-23 at 10:02 +0200, Set Hallstrom wrote:
Hi!
The bitrate is either 16 or 24. The samplerate is only restricted to
44.1KHz as a standalone unit. When used as a computer sound interface
you are supposed to be able to set it at the usual places between
44.1KHz and 96KHz.
On a related yet unrelated note, I have two of these and use them in a
master/slave configuration to record gigs using direct outs from our
board. I did have to make a couple of 8 port, 50dB L-pad boxes though
because the inputs on the R-16 are expecting line input at consumer
level (-10dBV) while the board puts out pro level (+4dBu). If anyone is
interested in the L-pad boxes I've posted a tutorial on my web page:
https://googledrive.com/host/0Bw2lTTCOj0kBeGdrbGVqNXJaODA/ZR16.html
I've since found that I should have made them 40dB so now I have to swap
out the 33K ohm resistors for 10K ohm. Oh well ;-)
> Plus, I don't know how to change the
sample rate on the device.
> There is no control exposed for alsamixer, and I cannot change it
> from the device itself. When I tested it, as soon I started jackd
> the device changed the sample rate to 96kHz (when I was trying 48kHz
> from the jackd command, and the device was at 44.1kHz before), and
> (q)jack(ctl)d stopped like waiting for the device.
I'm 99% sure you can only switch the bitrate on the r16 from 16-bits to
24-bits. The samplerate is always set to 44.1kHz.
Perhaps configuring jack to use 44.1 will solve the
problem?
Just a thaught, i still havn't got my thumb out to try Clemens Patch :/
Have a good awoken time y'all!
*set
On 2013-10-21 22:57, Natanael Olaiz wrote:
El 10/18/2013 10:04 PM, Natanael Olaiz escribió:
El 10/18/2013 08:27 AM, Clemens Ladisch
escribió:
I'm using the R16 as MIDI controller
[R16 -> a2jmidid (alsa midi)->
(jack midi) ardour3] and audio capture [R16 -> alsa_in (alsa device with
8 input channels) -> ffado jack host].
It seems to work quite well when is running, but there is something not
fine:
- it takes a long time to the device to appears as an alsa device since
it is detected from the kernel module
- at least when it is not used (but I think it can occurs even when
streaming) it seems to block ALSA for moments. Meanwhile alsa seems is
unresponsive. Trying to start qjackctl (just open the frontend, not even
starting jack) opened an unresponsive widget. As soon I disconnected the
USB from the R16, the buttons and the control of the widget appeared.
- I was with the above described chain (jack + R16 alsa_in) , and all
the audio devices suddenly hanged. I saw in the R16 the sample rate at
96kHz (when it was -as JACK- at 48kHz)
A dmesg shows this :
Natanael Olaiz wrote:
> [...]
> On the other hand, audio doesn't seem to works straightforward. The
> device is seen, but I was not able to make it work with jack nor aplay.
What happens?
I think it had some trouble with the sample rate or some of the other
defined arguments, but I still didn't had many time to try different
combinations...
Plus, I don't know how to change the sample rate on the device. There is
no control exposed for alsamixer, and I cannot change it from the device
itself. When I tested it, as soon I started jackd the device changed the
sample rate to 96kHz (when I was trying 48kHz from the jackd command,
and the device was at 44.1kHz before), and (q)jack(ctl)d stopped like
waiting for the device.
...
But after my previous mail I tried again with alsa_in on a running 48kHz
jackd server (Focusrite Saffire), and it worked!!!! I was able to use
all the 8 input channels!!! (my impression was an incredibly -for the
price...- clean sound!)
I tried then adding an alsa_out (at the same time than alsa_in), but it
said the device was already in use (I have a H2n and as far I can
remember I can execute both together...) [ 268.877864] 3:1:1: cannot get freq at ep 0x3
[ 272.489903] firewire_core 0000:07:00.0: created device fw1: GUID
00130e0100060dce, S400
[ 273.879240] 3:1:1: cannot set freq 44100 to ep 0x3
[ 278.903419] 3:1:1: cannot get freq at ep 0x3
[ 283.904662] 3:1:1: cannot set freq 44100 to ep 0x3
[ 286.633916] 3:1:1: cannot get freq at ep 0x3
[ 286.638154] 3:1:1: cannot set freq 44100 to ep 0x3
[ 286.671291] 3:1:1: usb_set_interface failed (-71)
[ 286.675542] 3:1:1: usb_set_interface failed (-71)
[ 286.679792] 3:1:1: usb_set_interface failed (-71)
"" * 20
[ 286.799821] 3:1:1: usb_set_interface failed (-71)
[ 286.830497] usb 1-1.4: USB disconnect, device number 3
[ 304.980599] hda-intel: IRQ timing workaround is activated for card
#0. Suggest a bigger bdl_pos_adj.
[ 305.930727] usb 1-1.4: new high-speed USB device number 4 using
ehci-pci
[ 306.022714] usb 1-1.4: config 1 interface 3 altsetting 0 bulk
endpoint 0x1 has invalid maxpacket 64
[ 306.022717] usb 1-1.4: config 1 interface 3 altsetting 0 bulk
endpoint 0x82 has invalid maxpacket 64
[ 306.023508] usb 1-1.4: New USB device found, idVendor=1686,
idProduct=00dd
[ 306.023513] usb 1-1.4: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[ 306.023515] usb 1-1.4: Product: R16
[ 306.023517] usb 1-1.4: Manufacturer: ZOOM Corporation
[ 306.023519] usb 1-1.4: SerialNumber: 0
[ 311.025093] 4:1:1: cannot get freq at ep 0x3
[ 321.027467] 4:2:1: cannot get freq at ep 0x84
[ 331.090900] 4:1:1: cannot get freq at ep 0x3
[ 336.092152] 4:1:1: cannot set freq 44100 to ep 0x3
[ 341.115367] 4:1:1: cannot get freq at ep 0x3
[ 346.116557] 4:1:1: cannot get freq at ep 0x3
[ 356.273029] 4:1:1: cannot get freq at ep 0x3
[ 358.352531] 4:2:1: usb_set_interface failed (-110)
[ 820.268089] 4:1:1: cannot get freq at ep 0x3
[ 825.269267] 4:1:1: cannot set freq 44100 to ep 0x3
Any hint?
Thanks in advance,
Natanael.
Soon I'll do more controlled tests and I'll update you. But it look so
good!! :-)
Thanks a lot!!!
Natanael.
> Regards,
> Clemens
>