Patent ID: 6959094
Filing Date: 2005-10-25
Classification: G10K,H04R

Abstract:
1. A method of synthesizing sound signals associated with a vehicle having an engine, comprising: providing to an engine process model a plurality of engine control parameters which characterize respective engine control conditions, and generating, in response to an output from said engine process model, engine related sound signals corresponding to said engine control parameters, wherein the outputs from said engine process model comprise engine load, spark event and engine rotational speed signals, and said engine process model comprises an engine physical model which generates said spark event and engine rotational speed outputs, and a load behavior model which generates said engine load output, said engine physical model comprising a starter motor model which provides an initial engine shaft rotational speed signal in response to an engine start control signal, an angular integrator which generates an engine shaft angle signal from said engine shaft rotational speed signal, and a spark timing model that generates said spark event output to simulate the firing of sparks at multiple shaft angles in response to said engine shaft angle signal.