[iyonix-support] Re: Audio hardware questions
- From: Ron <iyonix@xxxxxxxxxxx>
- To: iyonix-support@xxxxxxxxxxxxx
- Date: Tue, 18 Jan 2011 07:01:05 +1300
In message <5196f8ac2cjulie@xxxxxxxxxxxxxxxxxxxxxxx>
Julie <julie@xxxxxxxxxxxxxxxxxxxxxxx> wrote:
> Hi Ron,
>
> I consulted my local audio expert (he of the BTEC in Music Technology,
> euph player, and perfect pitch) and he responded as below. sorry about
> the delay!
Thanks for going to the trouble!
> The target is 0db, unfortunately there's no way of monitoring the
> incoming audio level on the Iyonix (except your ears!)
Jim Lesurf's !Wave_Stats gives an output like:
0.0 -8.20 -7.24, 8.46, 8.98
0.1 -7.94 -8.17, 8.08, 8.57
0.2 -8.15 -8.94, 8.48, 7.66
0.3 -8.92 -8.89, 8.10, 8.93
0.4 -9.98 -9.47, 9.76, 10.23
0.5 -8.23 -8.13, 8.48, 8.57
0.6 -8.44 -8.33, 8.31, 8.76
The left and right channels in dB are the first two columns.
This is (solid) music recorded with Line In (Set) to max.
As I said, this setting has no effect on AudioIn, and the
onboard sound chip seems to have the gain locked at 1:1
Maybe a good thing?
> Be careful when setting the gain;the audio will clip if the gain is
> too high. Regarding the Line In setting, be sure to click "Set"
> otherwise the computer WILL ignore it. Regarding Line in->Line out
> audio, this sounds like a bug in the software and/or hardware.
OK, thanks for the clipping tip.
The Configure window of sliders is effectively only a mixer for the
output on the Line Out socket.
I may try fitting a front mounted Headphone socket connected to
Aux Out for some variation.
A similar on board chip seems to have 32 ohm driver on the Aux Out.
Also there may be an S/PDIF o/p signal to find on the chip.
>
> I wasn't aware there was a patch for recording at 44.1KHz (which I
> think is what he means) but he's right about distortion when using
> that frequency. It's definitely cleaner at 48KHz but you still get
> artifacts in the recording :-( I think one problem is that the
> sampling is done with the hardware on the motherboard and if Castle
> have been trying to keep costs down in that area...
I think it is a commonly used motherboard ac97 sound processor.
I haven't found the exact details yet.
Ron M.
---
To alter your preferences or leave the group,
visit //www.freelists.org/list/iyonix-support
Other info via //www.freelists.org/webpage/iyonix-support
List-related queries to iyonix-support-moderators@xxxxxxxxxxxxx
Other related posts:
