Abstract: A special service mailpiece having at least on integral document section and a method for forming the mailpiece requiring special services is provided. The mailpiece has an integral document section requiring special mailing service and includes a sheet folded into sections along a fold line then sealed to enclose the integral document section. The sheet further has a removably attached section which, after the system is folded and sealed, forms a return postcard and at least one form. The return postcard and the form are integrally formed, but removably attached, such that the return postcard remains attached to the mailpiece until received by the addressee at which time it may be removed.

Abstract: A system is provided for recording, storing and reproducing sound for playing back in an environment requiring simulated sounds, voices, and/or sound effects. Sounds are recorded on a chip and played back in an asynchronous manner from the chip as a result of activation of a switch or inertial movement within the system. A Hall-effect sensor, reed switch or momentary switch or the like may be implemented for enabling activation of the recorded sound from the chip for broadcasting. A compander compresses the sound on the chip and expands the compressed sound for playback. Employing the above system for audio storage, a sound, motor and special effects controller may be created for model train applications as well. The different functions of the sound unit are controlled through a discrete bi-polar digital command control signal using a unique address for each unit. A synchronous means of play back may also be employed when the system is used with the bi-polar signal using a sensor.