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Groups > linux.debian.user > #184367 > unrolled thread

Live recording

Started byRodolfo Medina <rodolfo.medina@gmail.com>
First post2017-07-28 21:20 +0200
Last post2017-07-31 09:40 +0200
Articles 13 on this page of 93 — 18 participants

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Contents

  Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-07-28 21:20 +0200
    Re: Live recording deloptes <deloptes@gmail.com> - 2017-07-28 22:40 +0200
      Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-03 14:30 +0200
        Re: Live recording Jeremy Nicoll <jn.ml.dbn.25@letterboxes.org> - 2017-08-03 14:40 +0200
          Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-03 15:20 +0200
            Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-03 15:50 +0200
              Re: Live recording David Wright <deblis@lionunicorn.co.uk> - 2017-08-03 17:10 +0200
                Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-03 17:50 +0200
                  Re: Live recording Jeremy Nicoll <jn.ml.dbn.25@letterboxes.org> - 2017-08-03 19:10 +0200
                    RE: Live recording "larry owens" <larrydowens6@att.net> - 2017-08-03 19:40 +0200
                    Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-03 20:30 +0200
                      Re: Live recording David Christensen <dpchrist@holgerdanske.com> - 2017-08-04 03:10 +0200
                        Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-04 09:20 +0200
                          Re: Live recording David Christensen <dpchrist@holgerdanske.com> - 2017-08-05 23:50 +0200
                            Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-06 18:40 +0200
                      Re: Live recording David Christensen <dpchrist@holgerdanske.com> - 2017-08-04 03:40 +0200
                        Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-04 09:10 +0200
                Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-03 20:20 +0200
            Re: Live recording Doug <dmcgarrett@optonline.net> - 2017-08-03 21:30 +0200
              Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-03 21:50 +0200
        Re: Live recording deloptes <deloptes@gmail.com> - 2017-08-04 01:30 +0200
          Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-04 10:00 +0200
            Re: Live recording Curt <curty@free.fr> - 2017-08-04 15:30 +0200
            Re: Live recording deloptes <deloptes@gmail.com> - 2017-08-04 19:50 +0200
              Re: Live recording Glenn English <ghe2001@gmail.com> - 2017-08-05 03:20 +0200
                Re: Live recording Curt <curty@free.fr> - 2017-08-05 11:50 +0200
                  Re: Live recording Jeremy Nicoll <jn.ml.dbn.25@letterboxes.org> - 2017-08-05 13:20 +0200
                  Re: Live recording Glenn English <ghe2001@gmail.com> - 2017-08-06 04:20 +0200
                    Re: Live recording Curt <curty@free.fr> - 2017-08-06 11:00 +0200
          Re: Live recording Jeremy Nicoll <jn.ml.dbn.25@letterboxes.org> - 2017-08-04 11:10 +0200
          [solved] Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-04 18:00 +0200
            Re: [solved] Re: Live recording Richard Hector <richard@walnut.gen.nz> - 2017-08-06 01:50 +0200
              Re: [solved] Re: Live recording Eike Lantzsch <zp6cge@gmx.net> - 2017-08-06 03:20 +0200
                Re: [solved] Re: Live recording Doug <dmcgarrett@optonline.net> - 2017-08-06 04:40 +0200
              Re: [solved] Re: Live recording Eike Lantzsch <zp6cge@gmx.net> - 2017-08-06 03:20 +0200
                Re: [solved] Re: Live recording Richard Hector <richard@walnut.gen.nz> - 2017-08-06 05:40 +0200
                  Re: [solved] Re: Live recording Joe <joe@jretrading.com> - 2017-08-06 10:20 +0200
              Re: [solved] Re: Live recording Eike Lantzsch <zp6cge@gmx.net> - 2017-08-06 03:30 +0200
              Re: [solved] Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-06 18:20 +0200
                Re: Live recording David Wright <deblis@lionunicorn.co.uk> - 2017-08-06 19:10 +0200
                  Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-06 20:30 +0200
                    Re: Live recording David Wright <deblis@lionunicorn.co.uk> - 2017-08-06 21:00 +0200
                      Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-06 22:20 +0200
                        Re: Live recording Jeremy Nicoll <jn.ml.dbn.25@letterboxes.org> - 2017-08-07 18:10 +0200
                          Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-07 20:00 +0200
                            Re: Live recording David Wright <deblis@lionunicorn.co.uk> - 2017-08-07 23:40 +0200
                              Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-08 00:50 +0200
                                Re: Live recording Jeremy Nicoll <jn.ml.dbn.25@letterboxes.org> - 2017-08-08 13:30 +0200
                                  Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-08 14:50 +0200
                Re: [solved] Re: Live recording David Christensen <dpchrist@holgerdanske.com> - 2017-08-06 23:10 +0200
                  Re: [solved] Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-07 08:00 +0200
                Re: [solved] Re: Live recording Jeremy Nicoll <jn.ml.dbn.25@letterboxes.org> - 2017-08-07 18:10 +0200
                  Re: [solved] Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-07 23:30 +0200
            Re: [solved] Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-14 23:10 +0200
              Re: [solved] Re: Live recording deloptes <deloptes@gmail.com> - 2017-08-15 01:50 +0200
                Re: [solved] Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-15 09:30 +0200
                  Re: [solved] Re: Live recording deloptes <deloptes@gmail.com> - 2017-08-15 13:10 +0200
                  Re: [solved] Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-16 03:10 +0200
                    Re: [solved] Re: Live recording Zenaan Harkness <zenaan@freedbms.net> - 2017-08-16 05:00 +0200
                      Re: [solved] Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-16 13:50 +0200
                        Re: [solved] Re: Live recording Zenaan Harkness <zenaan@freedbms.net> - 2017-08-16 15:50 +0200
                          Re: [solved] Re: Live recording Ric Moore <wayward4now@gmail.com> - 2017-08-16 17:20 +0200
                            Re: [solved] Re: Live recording Zenaan Harkness <zenaan@freedbms.net> - 2017-08-16 17:30 +0200
                          Re: [solved] Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-17 02:40 +0200
                            Re: [solved] Re: Live recording Jeremy Nicoll <jn.ml.dbn.25@letterboxes.org> - 2017-08-17 09:30 +0200
                              Re: [solved] Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-17 10:00 +0200
                                Re: [solved] Re: Live recording Jeremy Nicoll <jn.ml.dbn.25@letterboxes.org> - 2017-08-17 11:40 +0200
                                  Re: [solved] Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-18 10:50 +0200
    Re: Live recording Jeremy Nicoll <jn.ml.dbn.25@letterboxes.org> - 2017-07-28 22:50 +0200
    Re: Live recording David Christensen <dpchrist@holgerdanske.com> - 2017-07-29 08:00 +0200
      Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-07-29 08:20 +0200
        Re: Live recording deloptes <deloptes@gmail.com> - 2017-07-29 09:10 +0200
        Re: Live recording David Christensen <dpchrist@holgerdanske.com> - 2017-07-29 09:20 +0200
        Re: Live recording Jeremy Nicoll <jn.ml.dbn.25@letterboxes.org> - 2017-07-29 10:30 +0200
          Re: Live recording Weaver <weaver@riseup.net> - 2017-07-29 11:00 +0200
            Re: Live recording Jeremy Nicoll <jn.ml.dbn.25@letterboxes.org> - 2017-07-29 11:10 +0200
        Re: Live recording Doug <dmcgarrett@optonline.net> - 2017-07-29 23:20 +0200
        Re: Live recording Dan Ritter <dsr@randomstring.org> - 2017-07-31 17:20 +0200
        Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-01 23:10 +0200
          Re: Live recording deloptes <deloptes@gmail.com> - 2017-08-02 00:50 +0200
            Re: Live recording Fungi4All <fungilife@protonmail.com> - 2017-08-02 01:20 +0200
            Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-05 09:40 +0200
              Re: Live recording deloptes <deloptes@gmail.com> - 2017-08-05 19:20 +0200
                Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-07 09:20 +0200
                  Re: Live recording David Christensen <dpchrist@holgerdanske.com> - 2017-08-08 01:20 +0200
                    Re: Live recording David Christensen <dpchrist@holgerdanske.com> - 2017-08-08 01:30 +0200
              Re: Live recording Nicolas George <george@nsup.org> - 2017-08-05 19:30 +0200
          Re: Live recording David Christensen <dpchrist@holgerdanske.com> - 2017-08-02 08:20 +0200
            Re: Live recording Jeremy Nicoll <jn.ml.dbn.25@letterboxes.org> - 2017-08-02 08:50 +0200
              Re: Live recording Rodolfo Medina <rodolfo.medina@gmail.com> - 2017-08-02 09:10 +0200
                Re: Live recording Jeremy Nicoll <jn.ml.dbn.25@letterboxes.org> - 2017-08-02 09:20 +0200
              Re: Live recording David Christensen <dpchrist@holgerdanske.com> - 2017-08-03 04:00 +0200
    Re: Live recording Zenaan Harkness <zenaan@freedbms.net> - 2017-07-31 09:40 +0200

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#184513

FromFungi4All <fungilife@protonmail.com>
Date2017-08-02 01:20 +0200
Message-ID<u9OCe-1Yd-13@gated-at.bofh.it>
In reply to#184511

[Multipart message — attachments visible in raw view] — view raw

> UTC Time: August 1, 2017 10:45 PM
> From: deloptes@gmail.com
> To: debian-user@lists.debian.org
> Rodolfo Medina wrote:
>> Rodolfo Medina <rodolfo.medina@gmail.com> writes:
>>
>>> What I want to do is recording live piano: I"d like to use two mics for
>>> that,
>>> one on the grave and the other one on the high notes. Besides, some
>>> times I will need to add human voice: this requires, in my idea, a third
>>> microphone... But even starting with two would be all right for now...
>>> Those recordings would not pretend to be professional, just home made for
>>> my personal tests, but stereo.
>>
>>
>> Thanks all for the abundant information and suggestions of possible
>> solutions. As much as I can understand, the simplest solution for me to
>> live recording with several microphones is to buy a - say - 6 channel
>> mixer and plug it into the line-in PC entry...
>>
>> Rodolfo
> The simplest way is to use external mixer, but look forward to get one with
> the inputs for low/high impedance (input for mic and line) for each
> channel. Some simple mixers have only 1-2 low (mic) inputs and more high
> inputs. The mic inputs on the mixer are 3 contacts/wires. The line inputs
> are 2 or could be 3 - stereo. Here for example
> http://www.studiomasterprofessional.com/product/item/209
> You could however go the cheep way and play with multiple usb/pci audio
> cards, jack and free audio software
> If you want to experiment with linux and audio recording, you could look for
> a supported multichannel audiocards and play with jack or audacity or some
> other free software which will spare the external mixer.

My cheap and primitive way was to use two pc,s if you already have them, and
record two mono tracks, then use mixing software to align them and blend them.
There is plenty of such software available on debian and the quality is within the
guidelines of your mic quality, placement, echo/background noise.
I use headphones for the backing track and rarely use a second mic for guitar
then blend the two. As I have been away from home and haven't done it for a
while don't ask me for names of packages.

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#184665

FromRodolfo Medina <rodolfo.medina@gmail.com>
Date2017-08-05 09:40 +0200
Message-ID<ub1QJ-1HU-9@gated-at.bofh.it>
In reply to#184511
deloptes <deloptes@gmail.com> writes:

> You could however go the cheep way and play with multiple usb/pci audio
> cards, jack and free audio software


Please, could you explain that?  Suppose I have two usb audio cards, one for
each microphone.  Will they be plugged together into the usb port of the PC?

Thanks,

Rodolfo

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#184686

Fromdeloptes <deloptes@gmail.com>
Date2017-08-05 19:20 +0200
Message-ID<ubaU2-7RS-5@gated-at.bofh.it>
In reply to#184665
Rodolfo Medina wrote:

> Please, could you explain that?  Suppose I have two usb audio cards, one
> for each microphone.  Will they be plugged together into the usb port of
> the PC?

It might be also PCI card but you said you have a notebook.
You plug them to the pc and you get two separate mic inputs. Now use some
utility like jack (I haven't played with it for years) or something else to
assign the inputs to L/R line in or perhaps Audacity offers a mapping of
input to output as well.

Consider the data volume - perhaps USB 3 will give you better results.

regards

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#184787

FromRodolfo Medina <rodolfo.medina@gmail.com>
Date2017-08-07 09:20 +0200
Message-ID<ubKut-59V-15@gated-at.bofh.it>
In reply to#184686
deloptes <deloptes@gmail.com> writes:

> Rodolfo Medina wrote:
>
>> Please, could you explain that?  Suppose I have two usb audio cards, one
>> for each microphone.  Will they be plugged together into the usb port of
>> the PC?
>
> It might be also PCI card but you said you have a notebook.
> You plug them to the pc and you get two separate mic inputs. Now use some
> utility like jack (I haven't played with it for years) or something else to
> assign the inputs to L/R line in or perhaps Audacity offers a mapping of
> input to output as well.
>
> Consider the data volume - perhaps USB 3 will give you better results.


I started with one microphone: I bought an external USB audio card and plugged
into the USB port of my computer.  Then I plugged the microphone into the `mic'
input of the card and started Audacity.  From the main menu, I selected the
`USB PnP Sound Device' as recording device, pressed the red button, spoke into
the mic but no sound is recorded: not even the usual wave forms are shown.
Neither with socks nor arecord can I record my voice from that USB card.  Any
idea...?

Thanks,

Rodolfo

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#184861

FromDavid Christensen <dpchrist@holgerdanske.com>
Date2017-08-08 01:20 +0200
Message-ID<ubZtv-7j5-9@gated-at.bofh.it>
In reply to#184787
On 08/07/17 00:18, Rodolfo Medina wrote:
> I started with one microphone: I bought an external USB audio card and plugged
> into the USB port of my computer.  Then I plugged the microphone into the `mic'
> input of the card and started Audacity.  From the main menu, I selected the
> `USB PnP Sound Device' as recording device, pressed the red button, spoke into
> the mic but no sound is recorded: not even the usual wave forms are shown.
> Neither with socks nor arecord can I record my voice from that USB card.  Any
> idea...?

Audacity is doing what you told it to do -- record from the USB audio 
interface device.  Plug your microphone into that.


It looks like Audacity can record all the input channels from one 
device, but not multiple channels from multiple devices (e.g. built-in 
sound card plus USB audio interface):

http://wiki.audacityteam.org/index.php?title=Multichannel%5FRecording


David

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#184862

FromDavid Christensen <dpchrist@holgerdanske.com>
Date2017-08-08 01:30 +0200
Message-ID<ubZDc-7mY-5@gated-at.bofh.it>
In reply to#184861
On 08/07/17 16:13, David Christensen wrote:
> On 08/07/17 00:18, Rodolfo Medina wrote:
>> I started with one microphone: I bought an external USB audio card and
>> plugged
>> into the USB port of my computer.  Then I plugged the microphone into
>> the `mic'
>> input of the card and started Audacity.  From the main menu, I
>> selected the
>> `USB PnP Sound Device' as recording device, pressed the red button,
>> spoke into
>> the mic but no sound is recorded: not even the usual wave forms are
>> shown.
>> Neither with socks nor arecord can I record my voice from that USB
>> card.  Any
>> idea...?
>
> Audacity is doing what you told it to do -- record from the USB audio
> interface device.  Plug your microphone into that.

My bad -- I mis-read your post and thought you plugged the microphone 
into your laptop.


What is the make and model of your USB audio interface?


Does it have Linux support?


Does the device appear under whatever audio mixer applet you have on 
your desktop?  Is it unmuted?  Is the gain turned up?


David

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#184688

FromNicolas George <george@nsup.org>
Date2017-08-05 19:30 +0200
Message-ID<ubb3H-7W5-9@gated-at.bofh.it>
In reply to#184665

[Multipart message — attachments visible in raw view] — view raw

L'octidi 18 thermidor, an CCXXV, Rodolfo Medina a écrit :
> Please, could you explain that?  Suppose I have two usb audio cards, one for
> each microphone.  Will they be plugged together into the usb port of the PC?

You would need a hammer. Better plug them in two different USB ports.

But that may not work correctly. Two different audio controllers will
have clocks running at slightly different speed. It may not be much, but
it accumulates over time. IIRC (I did the test once) the difference
could be 10^-4. That may sound like not much, but after half an hour of
recording that makes a tenth of second difference, and that is way
beyond unacceptable for your use.

Regards,

-- 
  Nicolas George

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#184525

FromDavid Christensen <dpchrist@holgerdanske.com>
Date2017-08-02 08:20 +0200
Message-ID<u9VaG-6at-25@gated-at.bofh.it>
In reply to#184510
On 08/01/17 14:04, Rodolfo Medina wrote:
> Rodolfo Medina <rodolfo.medina@gmail.com> writes:
>
>> What I want to do is recording live piano: I'd like to use two mics for that,
>> one on the grave and the other one on the high notes.  Besides, some times I
>> will need to add human voice: this requires, in my idea, a third
>> microphone...  But even starting with two would be all right for now...
>> Those recordings would not pretend to be professional, just home made for my
>> personal tests, but stereo.
>
>
> Thanks all for the abundant information and suggestions of possible solutions.

YW.


> As much as I can understand, the simplest solution for me to live recording
> with several microphones is to buy a - say - 6 channel mixer and plug it into
> the line-in PC entry...

That can work.  Make sure you understand phantom power and how you plan 
to connect everything before making a purchase:

https://en.wikipedia.org/wiki/Phantom_power


(If you feed phantom power to a device that is not designed to use it or 
withstand it, you can get degraded performance and/or destroy equipment.)


That I why I wrote:

On 07/29/17 00:10, David Christensen wrote:
 > What makes and models of microphones do you have?


David

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#184527

FromJeremy Nicoll <jn.ml.dbn.25@letterboxes.org>
Date2017-08-02 08:50 +0200
Message-ID<u9VDH-6on-1@gated-at.bofh.it>
In reply to#184525
On Wed, 2 Aug 2017, at 06:09, David Christensen wrote:
> On 08/01/17 14:04, Rodolfo Medina wrote:

> > As much as I can understand, the simplest solution for me to live recording
> > with several microphones is to buy a - say - 6 channel mixer and plug it into
> > the line-in PC entry...
> 
> That can work.  

If you do that you'll be recording at most 2 channels, which means you
have
to decide how to mix the more than 2 mics' signals into a stereo image
at the
venue.  That can be difficult to do, if you can't hear the incoming
sounds (eg 
in headphones) clearly, because of background noise, and the decision
you 
make then is what you're stuck with later on.

If you can possibly afford a multi-channel audio interface, do that
instead.  
Then the mics etc are connected to that external box, which if needed
powers 
the mics, amplifies their signals, digitises the analogue signals, then
sends the 
digital info via USB (usually) to the computer.  You can then fiddle
with the 
balance and everything else later on using software, and experiment with
different settings.  


> Make sure you understand phantom power and how you plan 
> to connect everything before making a purchase:
> 
> https://en.wikipedia.org/wiki/Phantom_power
> 
> (If you feed phantom power to a device that is not designed to use it or 
> withstand it, you can get degraded performance and/or destroy equipment.)

Yes;  you can also destroy a mic by plugging it into a socket on a mixer
while the
phantom power is on;  you need to make sure that phantom is only turned
on
after all the cables are connected.  And turn phantom off again before
unplugging
any powered mics.

-- 
Jeremy Nicoll - my opinions are my own.

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#184528

FromRodolfo Medina <rodolfo.medina@gmail.com>
Date2017-08-02 09:10 +0200
Message-ID<u9VX3-6JV-1@gated-at.bofh.it>
In reply to#184527
Jeremy Nicoll <jn.ml.dbn.25@letterboxes.org> writes:

> On Wed, 2 Aug 2017, at 06:09, David Christensen wrote:
>> On 08/01/17 14:04, Rodolfo Medina wrote:
>
>> > As much as I can understand, the simplest solution for me to live
>> > recording with several microphones is to buy a - say - 6 channel mixer and
>> > plug it into the line-in PC entry...
>> 
>> That can work.  
>
> If you do that you'll be recording at most 2 channels,


Mmmhhh...  this is not clear to me.  Why only two...?  Suppose the mixer has 3
channels, can't I plug three mics into it..?   Say two for the piano and the
third for the voice...?

Thanks,

Rodolfo


> which means you have
> to decide how to mix the more than 2 mics' signals into a stereo image at the
> venue.  That can be difficult to do, if you can't hear the incoming sounds
> (eg in headphones) clearly, because of background noise, and the decision you
> make then is what you're stuck with later on.
>
> If you can possibly afford a multi-channel audio interface, do that instead.
> Then the mics etc are connected to that external box, which if needed powers
> the mics, amplifies their signals, digitises the analogue signals, then sends
> the digital info via USB (usually) to the computer.  You can then fiddle with
> the balance and everything else later on using software, and experiment with
> different settings.
>
>
>> Make sure you understand phantom power and how you plan 
>> to connect everything before making a purchase:
>> 
>> https://en.wikipedia.org/wiki/Phantom_power
>> 
>> (If you feed phantom power to a device that is not designed to use it or 
>> withstand it, you can get degraded performance and/or destroy equipment.)
>
> Yes; you can also destroy a mic by plugging it into a socket on a mixer while
> the phantom power is on; you need to make sure that phantom is only turned on
> after all the cables are connected.  And turn phantom off again before
> unplugging any powered mics.

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#184529

FromJeremy Nicoll <jn.ml.dbn.25@letterboxes.org>
Date2017-08-02 09:20 +0200
Message-ID<u9W6J-6Ni-13@gated-at.bofh.it>
In reply to#184528
On Wed, 2 Aug 2017, at 08:07, Rodolfo Medina wrote:
> Jeremy Nicoll <jn.ml.dbn.25@letterboxes.org> writes:

> > If you do that you'll be recording at most 2 channels,
> 
> 
> Mmmhhh...  this is not clear to me.  Why only two...?  Suppose the mixer
> has 3
> channels, can't I plug three mics into it..?   Say two for the piano and
> the
> third for the voice...?

You described connecting the mixer to your computer's line-in port.  The
line-in is stereo ie 2 channels.

So, yes, you can connect more than 2 mics to a mixer, but then use the
mixer
to mix/merge those signals into just two which you send to the computer.

It mean the decisions on how to do that mix have to be made at the time
of 
the recording... which is not easy if there's background noise, or
hardly any
time to do it, or you are listening on headphones whereas later on you
could 
also listen on speakers...

A multi-channel USB audio interface lets you record all the signals at
the time,
then do the mixing and experiments later.

 
-- 
Jeremy Nicoll - my opinions are my own.

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#184557

FromDavid Christensen <dpchrist@holgerdanske.com>
Date2017-08-03 04:00 +0200
Message-ID<uadAB-1jX-3@gated-at.bofh.it>
In reply to#184527
On 08/01/17 23:46, Jeremy Nicoll wrote:
>> On 08/01/17 14:04, Rodolfo Medina wrote:
>
>>> As much as I can understand, the simplest solution for me to live recording
>>> with several microphones is to buy a - say - 6 channel mixer and plug it into
>>> the line-in PC entry...
>
> If you can possibly afford a multi-channel audio interface, do that
> instead.

+1


Most of them provide Windows and/or MacIntosh (OS X) drivers and 
applications.  Finding one with good Linux support will require 
research.  Please post if you find a hardware/software combination that 
is known to work.


David

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#184455

FromZenaan Harkness <zenaan@freedbms.net>
Date2017-07-31 09:40 +0200
Message-ID<u9dt1-3oE-29@gated-at.bofh.it>
In reply to#184367
On Fri, Jul 28, 2017 at 09:11:00PM +0200, Rodolfo Medina wrote:
> According to:
>  http://www.upubuntu.com/2013/05/how-to-record-your-voice-from.html
> I record live sound via microphone just doing:
>  $ sox -t alsa default output.wav
> 
> Now I was wondering about the stereo o non-stereo character of such a home made
> recording...  I tried to use two microphones together, plugging them together
> into the PC with a small common connection doubber.  Can we say the result is
> stereo...?  I would doubt...  and how to have - if possible - a stereo effect
> with the above basic recording instruments?

If your hardware supports it, also a headphone jack can often be
turned into a microphone jack:
http://www.omgubuntu.co.uk/2013/12/turn-headphone-jack-microphone-jack-ubuntu

(Conversely, turn a mic jack into a (mono) headphone jack:
https://askubuntu.com/questions/27804/using-microphone-input-port-as-headphone-output
)

:)

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