Ecasound Interactive Mode: List Chain Operators

This guide explains how to inspect audio processing chains in Ecasound interactive mode (EIAM) and identifies the exact command required to list chain operators assigned to a selected chain. By navigating chains and querying active operators, you can verify your audio routing and monitor real-time effect chains directly from the terminal prompt.

The Command: cop-list

In Ecasound Interactive Mode, the command used to list all chain operators assigned to the currently selected chain is:

cop-list

How to Use It Step-by-Step

Chain operator commands in Ecasound operate in the context of the active chain selection. To view the operators on a specific chain, follow this sequence:

1. Launch Interactive Mode: Start Ecasound in interactive mode using the -c flag:

   ecasound -c

2. Select the Chain: Specify the chain you want to inspect using the c-select command:

   c-select chain_name

   (Replace chain_name with the actual identifier of your chain, such as default or a custom name.)

3. List the Chain Operators: Execute the listing command:

   cop-list

Output and Related Commands

When executed, cop-list prints an indexed list of every chain operator currently bound to that chain, showing its index position, operator type (such as an amplifier, filter, or LADSPA plugin), and descriptive name.

To inspect or interact with the listed operators further:

• cop-select <index>: Selects a specific operator from the printed list by its index number.
• cop-status: Displays real-time parameter values and settings for the currently selected operator.
• cop-describe: Outputs detailed parameter descriptions for the selected operator.