The invention disclosed herein is a fastener which is embedded into a sturdy fabric. A memory device according to the present invention includes a ready signal sending portion, and the ready signal sending portion monitors a memory portion to detect the memory portion becoming ready for reading or writing of specified data. Performing the speaker segmentation on the media includes utilizing the number of faces visible in the video stream to augment the speaker segmentation. The receiver selects a channel length from the plurality of different candidate channel lengths in response to the respective criterion value.