Data representing one or more characteristics of an input airflow (e.g., an
airflow associated with a human being, such as breath or an airflow resulting from
motion of the human being, or a wind tunnel airflow) is acquired and, if necessary
or desirable, processed, then stored, transmitted to a remote location, and/or
played back. Playback of acquired airflow data entails generating a display airflow
corresponding to the input airflow. The characteristic of an airflow regarding
which data is acquired is often the velocity of the airflow, though data regarding
other airflow characteristics (e.g., direction, temperature, humidity, odor) can
also be acquired in addition to, or instead of, airflow velocity.
