Re: [solved] Re: Live recording
Rodolfo Medina <email@example.com> writes:
> Rodolfo Medina <firstname.lastname@example.org> writes:
>> According to:
>> 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?
> Thanks to all. The problem seems to be solved with such a cable:
Well, actually better this one:
> as suggested by deloptes and other listers. The cable consists in two female
> 3.5mm terminations, each of them mono, and a male 3.5mm stereo. One mic at
> one female end, the other one at the other female end, and the male end
> plugged into the microphone input of my netbook. All this seems to produce a
> perfect stereo effect: the two channels sound to be very well separated.
> I'll be using the above simple connection system to live piano recording: mic
> 1 on the basses (left), mic 2 on the high (right).
> My next step is trying to add human voice, say in the middle. I'll see if
> this is possible by slightly complicating the above solution, without preamp
> or mixer or multi-channel audio interface. I'll be posting here if the
> attempt succeeds.
For human voice, I bought a USB audio card and plugged a third microphone into
it. So now I have:
mic1 for piano basses; |__________ plugged together into the
mic2 for piano highs; | above Y cable
mic3 for voice -> -> -> -> plugged into the USB dongle.
Then I do:
$ sox -t alsa default piano.wav
and, at the same time, on another xterm session,
$ sox -t alsa wh:2,0 voice.wav
where wh:2,0 is the USB device (do: `arecord -l' first). This way I get two
audio files: piano.wav and voice.wav. The first one is stereo and the second
is mono. In the end I merge the two together with Audacity. By default,
Audacity puts the mono file just in the middle between left and right channel;
but, if you like, you can have it weight more left or more right, in the
percentage you want. I must say that the result is acceptable, and more...