- abuffer
- Buffer audio frames, and make them available to the filter chain.
- aevalsrc
- Generate an audio signal specified by an expression.
- afirsrc
- Generate a FIR coefficients using frequency sampling method.
- anullsrc
- The null audio source, return unprocessed audio frames.
- flite
- Synthesize a voice utterance using the libflite library.
- anoisesrc
- Generate a noise audio signal.
- hilbert
- Generate odd-tap Hilbert transform FIR coefficients.
- sinc
- Generate a sinc kaiser-windowed low-pass, high-pass, band-pass, or band-reject FIR coefficients.
- sine
- Generate an audio signal made of a sine wave with amplitude 1/8.