Docs | ELNS Audio Tool

The matrix mixer supports custom mapping and mixing of any input channels to any output channel. The typical use case is a mono or stero input mapped to a 8-channel (7.1) output, enabling sending the input audio any channel or speaker.

The input channels are represented as rows and the output channels are represented as columns. An input and output is connected by clicking the box corresponding to the row and column for the input and output channel. The number in the box corresponds to the attenuation of that connection. The color represents the polarity. Green color indicates normal polarity, while red color signifies a 180° phase shift. The phase is swapped by right-clicking the box.

For stereo channel 1 is the left audio and channel 2 is the right audio. In the screenshot above, input channel 1 (left) is sent to output channel 1 (left) at full volume, +0dB, and input channel 2 (right) is sent to output channel 2 (right). The speaker assignments for the full 8 channels can be found in the channels assignments.

Any number of channels can be sent to any output channel. The matrix mixer will automatically reduce the output level to prevent overflow.

The following setups shows some stereo to 8 channel routing examples.

Stereo sent to the L and R fronts
Stereo mixed down to mono and sent to the center channel
Stereo mixed down to mono and sent to the LFE channel
Stereo to the L and R front channels, where the phase for R is reversed.
Stereo sent to the left and right surround channels
Stereo sent to the left and right surround back channels
Stereo upmixed to a surround mix to demonstrate complex and composite mixes

Matrix mixer function

Matrix examples