On 03/03/2015 01:14 AM, Teemu Likonen wrote:
I believe this is either a hardware issue or some internal USB driver
issue.
The OP might want to check dmesg to see if there are any hard drive or
other warning message related failures. That could cause stutter and
hiss as well. Ric
--
My fa
Could be noise coupled in over ground/power lines of the USB
connection. This is very common, and depends a lot on the particulars
of the hardware set up.
See if you can isolate any other ground connections from the USB
device. Isolate other peripherals from the PC. Test with hea
August Karlstrom [2015-03-02 22:57:15+01] wrote:
> On 2015-03-02 21:00, Teemu Likonen wrote:
>> I got a new USB DAC device (digital to analog converter, a "sound
>> card") and I'm having problems with digital noise.
>
> What is the name of the DAC?
Henry Audio USB DAC 128 mkII
http://www.henryaud
Dan Ritter [2015-03-02 16:26:12-05] wrote:
> If you have an alsa output, there is a software mixer. Control it with
> alsamixer, and turn off all the inputs that aren't being used.
ALSA can use to sound devices' hardware mixer but ALSA has its own
software mixer too.
I'm bypassing ALSA's softwar
On 2015-03-02 21:00, Teemu Likonen wrote:
I got a new USB DAC device (digital to analog converter, a "sound card")
and I'm having problems with digital noise.
What is the name of the DAC?
Music goes directly to the device without any mixers,
Does alsamixer show only one PCM slider? Is Pulse
On Mon, Mar 02, 2015 at 10:23:40PM +0200, Teemu Likonen wrote:
> Dan Ritter [2015-03-02 15:11:00-05] wrote:
>
> > The static part could easily be introduced in mixing; check alsamixer
> > that everything non-essential is turned down to zero.
>
> But there is no mixer, neither software nor hardwar
On 02/03/2015 19:45, Teemu Likonen wrote:
But with high-dynamic classical music I need to
turn amplifier's volume up more than usually and it reveals some sort of
digital noise. Here's a short recording of the sound (file size 1.2MB):
http://koti.kapsi.fi/~dtw/usb-dac-digital-noise.flac
That's
Dan Ritter [2015-03-02 15:11:00-05] wrote:
> The static part could easily be introduced in mixing; check alsamixer
> that everything non-essential is turned down to zero.
But there is no mixer, neither software nor hardware. I think the
connection to the DAC is as bit-perfect as it can be.
sign
On Mon, Mar 02, 2015 at 09:45:13PM +0200, Teemu Likonen wrote:
> I got a new USB DAC device (digital to analog converter, a "sound card")
> and I'm having problems with digital noise.
>
> Music goes directly to the device without any mixers, like this:
>
> mplayer -af-clr -ao alsa:device=hw=1
I got a new USB DAC device (digital to analog converter, a "sound card")
and I'm having problems with digital noise.
Music goes directly to the device without any mixers, like this:
mplayer -af-clr -ao alsa:device=hw=1.0 -format s32le [...]
And it plays nicely. But with high-dynamic classica
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