For instance, when acceleration of a diesel engine is initiated, a lower frequency sound will result first due to the diesel motor speeding up. In a diesel train engine, the primary sound generated is a result of both the diesel motor exhaust and the turbocharger used to supply the fuel to the engine. However, prior devices have not accurately duplicated the various sounds of trains, particularly those of the diesel type. In that regard sound simulators have been made to represent the sounds normally made by the engines or power units of such trains. In the field of model trains much has been done to make such trains exact replicas of the larger full-size counterparts which they represent.
Sounds are emitted representative of a regular diesel train.īackground of the Diesel Engine Sound Simulation It is also a good study in designing with transistors and the resulting design can be fitted inside a model train.Įxecutive Summary of the Diesel Engine Sound SimulationĪ simulator for mounting in a model diesel train engine. It's all done with discrete circuity and the only disadvantage of the project is that it will only work for one model on a track and you would have to alter it to operate with digital control of individual trains running at different speeds on the same track.įor a more complex system you would want to allow different types of trains on the same track but as far as it goes it does the job well. The interesting part about this design is that there are no microcontrollers or ROMs or EEROMs in sight.
This project, a diesel engine sound simulation fromġ974, details how to create a realistic diesel sound simulation for a model train.