This invention is a signal recordingreproducing apparatus for searching for a reproduction position desired by a user from a recorded video signal andor audio signal and reproducing the signal. The cruise control system is configured to selectively synchronize speed control of the host vehicle with at least one other vehicle. The manager 4 transmits a product information service message 16b to the customer agent 9 and a product information service message 16c to a shop agent 17. A training module may then train the recognizer with the modified training database to thereby optimize speech recognition procedures in cyclostationary noise environments. A knockout plunger has open areas corresponding to the solid areas of the pattern and solid areas corresponding to the open areas of the mold pattern.