Merge "Fix a few typos in audiofx doc strings."

/**

 * Acoustic Echo Canceler (AEC).

 * <p>Acoustic Echo Canceler (AEC) is an audio pre-processing which removes the contribution of the

 * <p>Acoustic Echo Canceler (AEC) is an audio pre-processor which removes the contribution of the

 * signal received from the remote party from the captured audio signal.

 * <p>AEC is used by voice communication applications (voice chat, video conferencing, SIP calls)

 * where the presence of echo with significant delay in the signal received from the remote party

/**

 * Automatic Gain Control (AGC).

 * <p>Automatic Gain Control (AGC) is an audio pre-processing which automatically normalizes the

 * <p>Automatic Gain Control (AGC) is an audio pre-processor which automatically normalizes the

 * output of the captured signal by boosting or lowering input from the microphone to match a preset

 * level so that the output signal level is virtually constant.

 * AGC can be used by applications where the input signal dynamic range is not important but where

/**

 * Noise Suppressor (NS).

 * <p>Noise suppression (NS) is an audio pre-processing which removes background noise from the

 * <p>Noise suppression (NS) is an audio pre-processor which removes background noise from the

 * captured signal. The component of the signal considered as noise can be either stationary

 * (car/airplane engine, AC system) or non-stationary (other peoples conversations, car horn) for

 * more advanced implementations.