Configuring 44.1kHz 16-Bit Stereo in Ecasound

This guide covers the shorthand format syntax required to configure a standard 16-bit, stereo, 44.1kHz audio chain in Ecasound. It details the exact command-line arguments used to define these stream parameters, explains each component of the format option, and provides a clear example of how to implement it within a functional audio processing setup.

The shorthand syntax for configuring a stereo, 44.1kHz, 16-bit chain in Ecasound is:

-f:16,2,44100

Alternatively, you can explicitly define the sample format endianness using:

-f:s16_le,2,44100

Breakdown of the Syntax

The -f option sets the audio stream parameters using the format -f:sample_format,channels,sample_rate:

• 16 (or s16_le): Specifies the sample format. Entering 16 serves as standard shorthand for signed 16-bit audio (typically native or little-endian, s16_le).
• 2: Specifies the channel count, establishing a two-channel stereo stream.
• 44100: Defines the sampling rate in Hertz (44.1kHz), matching standard Red Book CD audio specifications.

Command Example

To apply this format shorthand across an input and output chain in Ecasound, structure your command as follows:

ecasound -f:16,2,44100 -i:input.raw -o:output.wav

In this command, Ecasound interprets the raw input file using the specified 16-bit stereo 44.1kHz parameters and processes it accordingly. When working with formats that require explicit channel interleaving or buffer settings, Ecasound defaults to standard interleaved processing unless trailing arguments are appended.