[linux-audio-dev] Hi, is it possible to record multi channel speech audio and down sample it 2 stereo channels BUT with horizontal audio positioning of each audio channel ie. like dolby surround effect. I'm not looking to make multi channel podcast, just a plain stere
13 Mar
2007
13 Mar
'07
6:15 a.m.
Hi,
is it possible to record multi channel speech audio and down sample it
2 stereo channels BUT with horizontal audio positioning of each audio
channel ie. like dolby surround effect.
I'm not looking to make multi channel podcast, just a plain stereo
podcast. Ok, not just plain, maybe better term is enhanced podcast
with "dolby surround" or "binaural" effect so that different voices
appear to be coming from different positions.
The idea is to make a podcast with 5 (or more/less people) and record
each of them individually and to make an stereo file for distribution
but such that each person has a distinct "location" in your ear. So
you can hear that person A is in front of you, person B is on the far
left, person C is to the right but closer to center... and so on.
I would maybe have 3 channels sometimes and sometimes maybe 7
channels, it differs by the amount of guests there are in each podcast
show.
Is there some linux audio tool which I could feed 3-7 wav tracks and
define where in horizontal space I want each channel to be located -
and it makes final stereo track with this "binaural" or "Dolby
surround" enhanced podcast?
Thank you in advance.
--
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Skype: valent.turkovic
13 Mar
13 Mar
6:34 a.m.
New subject: [linux-audio-dev] Hi, is it possible to record multi channel speech audio and down sample it 2 stereo channels BUT with horizontal audio positioning of each audio channel ie. like dolby surround effect. I'm not looking to make multi channel podcast, just a plain stere
On Tue, 2007-03-13 at 10:15 +0100, Valent Turkovic wrote:
Is there some linux audio tool which I could feed 3-7
wav tracks and
define where in horizontal space I want each channel to be located -
and it makes final stereo track with this "binaural" or "Dolby
surround" enhanced podcast?
You could try this LADSPA plugin: http://quitte.de/dsp/caps.html#HRTF
I haven't used it myself, but it seems to do what you want (HRTF
positioning at elevation 0). You could probably use Ardour to apply the
HRTF to each channel and downmix to stereo.
--ll
6:48 a.m.
New subject: [linux-audio-dev] Hi, is it possible to record multi channel speech audio and down sample it 2 stereo channels BUT with horizontal audio positioning of each audio channel ie. like dolby surround effect. I'm not looking to make multi channel podcast, just a plain stere
Hallo!
I'm not looking to make multi channel podcast,
just a plain stereo
podcast. Ok, not just plain, maybe better term is enhanced podcast
with "dolby surround" or "binaural" effect so that different voices
appear to be coming from different positions.
[...]
Is there some linux audio tool which I could feed 3-7
wav tracks and
define where in horizontal space I want each channel to be located -
and it makes final stereo track with this "binaural" or "Dolby
surround" enhanced podcast?
Yes, there are various implementations of binaural spatialization in
Pure Data (and I guess also in Supercollider and CSound ...).
I am just making some ready-made tutorial patches regarding this topic
for the linux audio conference - so if you wait some days you can have
them !
LG
Georg
1:59 p.m.
New subject: [linux-audio-dev] Hi, is it possible to record multi channel speech audio and down sample it 2 stereo channels BUT with horizontal audio positioning of each audio channel ie. like dolby surround effect. I'm not looking to make multi channel podcast, just a plain stere
Hi Valent,
On Tue, 2007-03-13 at 10:15 +0100, Valent Turkovic wrote:
Hi,
is it possible to record multi channel speech audio and down sample it
2 stereo channels BUT with horizontal audio positioning of each audio
channel ie. like dolby surround effect.
Please bare in mind that for your (podcasting) application mono
compatibility is everything. Don't use fancy stereo effects which too
easily lend themselves to phase cancellations during mono playback.
I say that because too often people forget about that. Guess how many
kitchen radios exist out there or how many people are listening to a
piece from the next room and so on.
Basically you want to use only a few effects like panning or a small
portion of room reverb in order to simulate run-time differences. (I
used that trick, too for wetting a too "intimate" voice over)
If possible don't rely on phase shifting effects (as are most
psycho-acoustic effects) for the sake of mono compatibility.
But don't limit yourself to effect processing either. Be creative when
it comes to recording. You could use a stereo microphone setup and place
it different for every narrator.
If you begin with mono tracks you could play them back through any PA
and record it with a stereo mic pair. Lot's of possibilities there.
Think of what you had done if all you had was a 2-track tape deck.
As a last thought think about the typical playback setup of your
listeners. Most fancy stereo effects either work through a well-adjusted
speaker setup or through headphones only. Only a few are compatible with
both.
To start with have a look at Wikipedia. They have a pretty good section
about audio engineering which covers a lot of topics including
sterophony. (At least the German edition does)
Yours sincerely,
Dennis Schulmeister
--
Dennis Schulmeister - Schliffkopfweg 12 - 76189 Karlsruhe - Germany
Tel: 0721/5978883 - Fax: 0721/5705992 - dennis(a)windows3.de
http://www.windows3.de - http://www.denchris.de
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3 comments
4 participants
participants (4)
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Dennis Schulmeister -
Georg Holzmann -
Lars Luthman -
Valent Turkovic