The send track to estimate the answer delay.
The recv track to estimate the answer delay.
The minimum talking duration in milliseconds to detect voice start.
The minimum silent duration in milliseconds to detect voice stop.
Optionalcallback: (The callback called at the end of the question and answer.
The cleanup function to stop the estimation.
Estimates the question to answer delay. The estimation is based on the voice activity detection between the question and answer audio tracks.