Audio Pipeline#

The audio pipeline in FFD processes two channel PDM microphone input into a single output channel, intended for use by an ASR engine.

The audio pipeline consists of 3 stages.

Table 6 FFD Audio Pipeline#

Stage

Description

Input Channel Count

Output Channel Count

1

Interference Canceller and Voice Noise Ratio

2

1

2

Noise Suppression

1

1

3

Automatic Gain Control

1

1

See the Voice Framework User Guide for more information.