Re: [ecasound] Smooth on-the-fly volume control?

Hi,

Thanks to everyone who replied. It looks like Kai's suggestion of "cop-set"
does just what I need - and furthermore, this command does not break the
server-mode (as in maxing out the CPU) the way that the combination of the
"c-clear" and "cs-option" commands did, when sent via telnet. So I can now
change the volume of my radio stream remotely, without interrupting it.

The MIDI control option also seemed like it might be useful, but I couldn't
find a simple command-line program to send specific MIDI events to a
particular channel/controller...

Thanks for the help guys.

-Luke

Kai Vehmanen wrote:
>
> Hi,
>
> Julien already gave quite a few options, but just in case you are looking
> for something even simpler...
>
> On Mon, 10 Sep 2007, textchimp wrote:
>
>> USB radio device into the Jack server. I'm also using the '-ea:nn' option
>> to
>> change the volume of the radio stream, but in order to change the volume
>> on
>> the fly (in interactive mode) I seem to have to use the two commands
>> 'c-clear' and then 'cs-option -ea:nn', and these commands disconnect the
>> chainsetup and stop processing, causing gaps in the audio.
>
> You might be looking for 'cop-set' and other "real-time commands" (see
> ecasound-iam(1) man page and the section on real-time commands). In short,
> "cop-set XX" will set amplify to XX (and do so without interrupting
> playback).
> Check the man page for more details.
>
>> It also seems worth pointing out that I'm having trouble using the
>> daemon-mode of ecasound - I can send commands to the ecasound server via
>> telnet but sooner or later a command (one of the two I mentioned above)
>> will
>> cause the server to start maxing out the CPU, and the only way to stop it
>> is
>> to kill the server process. I'm not sure if this is something the
>> developers
>> are already aware of. Maybe it would be a useful feature to be able to
>> define a file or files which ecasound could poll for changes and read
>> parameter values from, to allow them to be changed on the fly?
>
> Hmm, that is new to me. Sounds like a bug in the polling mechanism... tips
> on how to reproduce this with a mimimal ecasound setup would be welcome.
>
> --
> links, my public keys, etc at http://eca.cx/kv
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2005.
> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> _______________________________________________
> Ecasound-list mailing list
> Ecasound-list@email-addr-hidden
> https://lists.sourceforge.net/lists/listinfo/ecasound-list
>
>

-- 
View this message in context: http://www.nabble.com/Smooth-on-the-fly-volume-control--tf4419681.html#a12648240
Sent from the Ecasound - General mailing list archive at Nabble.com.
-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2005.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
_______________________________________________
Ecasound-list mailing list
Ecasound-list@email-addr-hidden
https://lists.sourceforge.net/lists/listinfo/ecasound-list