26 Jan
2006
26 Jan
'06
1:05 p.m.
Hello
I started a session in Ardour - drag and dropped a .wav file, then recorded (sucessfully)
from a Jack input.
Checking the session folder, Ardour appears to record to disc as it's going along
(on-the-fly).
I presume Ardour can also route the incoming sound to its outputs, for monitoring.
Does anyone know what mechanism Ardour uses to do this?
(I'll walk blindly into speculation. Ardour uses a jack ringbuffer on its Jack input
port, in the approved way - but that only leaves one read on the ringbuffer output...)
Robert
26 Jan
26 Jan
1:16 p.m.
On Thu, 2006-01-26 at 17:05 +0000, zen95156(a)zen.co.uk wrote:
Checking the session folder, Ardour appears to record
to disc as it's going
along (on-the-fly). I presume Ardour can also route the incoming sound to
its outputs, for monitoring. Does anyone know what mechanism Ardour uses
to do this?
(I'll walk blindly into speculation. Ardour uses a jack ringbuffer on its Jack
input port, in the approved way - but that only leaves one read on the
ringbuffer output...)
A ringbuffer is only needed if you need to transport the data from the
JACK thread to another thread (like when you record incoming data to
disc). If you want to route the sound to a JACK output the data never
has to leave the JACK thread, it can be processed and copied directly to
the output buffer - so there's nothing stopping you from copying the
incoming data from the JACK input buffer to a ringbuffer _and_ to
another JACK output buffer.
(That being said I don't know anything about the internals of Ardour)
--
Lars Luthman
PGP key: http://www.student.nada.kth.se/~d00-llu/pgp_key.php
Fingerprint: FCA7 C790 19B9 322D EB7A E1B3 4371 4650 04C7 7E2E
4:30 p.m.
On Thu, 2006-01-26 at 17:05 +0000, zen95156(a)zen.co.uk wrote:
Hello
I started a session in Ardour - drag and dropped a .wav file, then recorded (sucessfully)
from a Jack input.
Checking the session folder, Ardour appears to record to disc as it's going along
(on-the-fly).
I presume Ardour can also route the incoming sound to its outputs, for monitoring.
Does anyone know what mechanism Ardour uses to do this?
See Windows -> Options-> misc -> "Use Software Monitoring"
This mechanism will push the input sound to the track outputs when the
track is record enabled.
(I'll walk blindly into speculation. Ardour uses a
jack ringbuffer on its Jack input port, in the approved way - but that only leaves one
read on the ringbuffer output...)
You don't need to care about ringbuffers to get monitoring working. :)
--
Sampo Savolainen <v2(a)iki.fi>
6688
days inactive
6688
days old
linux-audio-dev@lists.linuxaudio.org
2 comments
3 participants
participants (3)
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Lars Luthman -
Sampo Savolainen -
zen95156＠zen.co.uk