Hi Gunnar,
no bad feelings here. I was neither aggressive, nor sarcastic.
I worked a little bit as audio engineer and a little bit for one of the
two more known German mic companies.
>I'm currently configuring DSP-based crossovers for active speakers,
>which involves measurements of the speakers'
On Mon, 24 Aug 2015, Gunnar Arndt wrote:
>Btw, that noise is actually from the on-board wiring - it's there even
>if nothing is connected to line input.
If nothing is connected even the best discrete circuits could be noisy.
For e.g. phono pre-amps it's common to insert short circuit connectors,
As mentioned, it's an experiment - I'm about to get better hardware, but
found it interesting.
I'm actually suprised by furor I caused...
Am 24.08.2015 um 22:46 schrieb Bill Unruh:
>>> The cheapest analog hardware method to convert from balanced to
>>> unbalanced requires two conditions: 1) the b
>> The cheapest analog hardware method to convert from balanced to
>> unbalanced requires two conditions: 1) the balanced output must
>> come from a transformer (coil of wire on a ferrous core); _AND_
>> 2) you are willing to sacrifice a little noise floor in exchange
>> for economy. That solution
Ralf,
you have been engaging heavily in this discussion, but, as it seems to
me, with increasing aggression. I cannot comprehend that - if you do not
like my idea, you do not have to use it.
Further comments below.
Am 24.08.2015 um 11:55 schrieb Ralf Mardorf:
> On Sun, 23 Aug 2015 18:07:32 -070
Bill,
> He stated that if he ran the signal left and right with the ground as common
> ground, he got lots of noise.
> If he subtracted L from R the noise disappeared.
> Now, that may mean that there is common mode noise, in which case running the
> balanced into an unbalanced would be very noisy
Clemens,
thank you for your reply - it has been the only helpful one so far.
Am 24.08.2015 um 08:43 schrieb Clemens Ladisch:
> Gunnar Arndt wrote:
>> the configuration of an Alsa PCM device which does that job
>> automatically in real time:
>>
>> (1) Grab a stereo signal from the line input.
>> (
Robert,
thank you for your message. I appreciate the additional information.
Am 23.08.2015 um 23:20 schrieb Robert M. Riches Jr.:
>> Date: Sun, 23 Aug 2015 19:11:17 +0200
>> From: Gunnar Arndt
>> To: alsa-user@lists.sourceforge.net
>>
>> I have the following idea, which may be of interest for ot
On Sun, 23 Aug 2015 18:07:32 -0700 (PDT), Bill Unruh wrote:
>Now, that may mean that there is common mode noise, in which case
>running the balanced into an unbalanced would be very noisy, or the
>noise was all in the ground wire, in which case bal->unbal might work.
It's the nature of unbalanced
Gunnar Arndt wrote:
> the configuration of an Alsa PCM device which does that job
> automatically in real time:
>
> (1) Grab a stereo signal from the line input.
> (2) Invert either the left OR the right channel (i.e. multiply its
> signal's amplitude by minus 1).
> (3) Merge the channels to mo
He stated that if he ran the signal left and right with the ground as common
ground, he got lots of noise.
If he subtracted L from R the noise disappeared.
Now, that may mean that there is common mode noise, in which case running the
balanced into an unbalanced would be very noisy, or the noise w
On Sun, 23 Aug 2015 14:20:46 -0700, Robert M. Riches Jr. wrote:
>That solution is to just ground one of the balanced wires and use the
>other as signal.
This (an unbalanced wiring) is the only sane solution for this kind of
setup.
Faked balanced input or real balanced input by using a transformer
> Date: Sun, 23 Aug 2015 19:11:17 +0200
> From: Gunnar Arndt
> To: alsa-user@lists.sourceforge.net
>
> Hi Alsa users,
>
>
> I have the following idea, which may be of interest for other users,
> too: I would like to abuse the 'normal' unbalanced stereo input of my
> on-board sound as a balanced
On Sun, 23 Aug 2015 19:11:17 +0200, Gunnar Arndt wrote:
>I have a measurement microphone with an integrated amplifier and a
>balanced mono output which should be connected to consumer sound
>devices with an `ordinary' unbalanced input
AFAIK Audacity supports LADSPA plugins, so perhaps a plugin do
Hi Alsa users,
I have the following idea, which may be of interest for other users,
too: I would like to abuse the 'normal' unbalanced stereo input of my
on-board sound as a balanced mono input.
I have a measurement microphone with an integrated amplifier and a
balanced mono output which shoul
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