Sound recording and reproduction system for model train using in

Details Sound recording and reproduction system for model train using in Sound recording and reproduction system for model train using in

1997-05-05

1998-12-29

Hudspeth, David R.

Data processing: speech signal processing, linguistics, language

Speech signal processing

Application

704201, 105 15, G10L 918, A63H 1914

Patent

active

058550046

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. In addition to the analog sound storage, the same concepts and ideas may be applied to a digital sound recording and play back device as well.

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