Re: [ecasound] Automated volume change

From: Pedro Antonio Fructuoso Merino <pfructuoso@email-addr-hidden>
Date: Fri Sep 02 2005 - 09:23:24 EEST

Hi Luis Pablo:
    I don't know if you can do it with -km but in ecasound control interface guide you have an example about how you can do it. In this code use  the chain operator -efl, but if you change it work fine. After that, I copy&paste the c++ code.

#include <iostream>
#include <unistd.h>
#include <eca-control-interface.h>

int main(int argc, char *argv[])
{
  double cutoff_inc = 500.0;

  ECA_CONTROL_INTERFACE e;
  e.command("cs-add play_chainsetup");
  e.command("c-add 1st_chain");
  e.command("ai-add some_file.wav");
  e.command("ao-add /dev/dsp");
  e.command("cop-add -efl:100");
  e.command("cop-select 1");
  e.command("copp-select 1");
  e.command("cs-connect");
  e.command("start");
  while(1) {
    sleep(1);
    e.command("engine-status");
    if (e.last_string() != "running") break;
    e.command("get-position");
    double curpos = e.last_float();
    if (curpos > 15.0) break;
    e.command("copp-get");
    double next_cutoff = cutoff_inc + e.last_float();
    e.command_float_arg("copp-set", next_cutoff);
  }
  
  e.command("stop");
  e.command("cs-disconnect");
  e.command("cop-status");
  cerr << "Chain operator status: " << e.last_string() << endl;

  return(0);
}

Luis Pablo Gasparotto escribió:

Hi folks,

I would like to know if there's some way to change, as an example, the volume (-ea) parameter in a certain time position.

Example:
ecasound -i:test.wav -ea:100
and I would like -ea:120 at the 5 seconds position.

May I do it using -km?

I'm curious about it because I think It would be a useful feature for Tkeca.

Thank you in advance,

Luis Pablo


    

    
       
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------------------------------------------------------- SF.Net email is Sponsored by the Better Software Conference & EXPO September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf _______________________________________________ Ecasound-list mailing list Ecasound-list@email-addr-hidden https://lists.sourceforge.net/lists/listinfo/ecasound-list Received on Fri Sep 2 12:15:04 2005