| 摘要 |
<p>A modular quadraphonic sound system for use in vehicle trainers is shown. Sounds to be simulated are broken down as to mechanical source and separate voltage controlled sound generators and voltage controlled attenuators provided for each sound. Sounds are then added and proportionately provided to those of the speakers which will best simulate their source direction. Control of the system is through a digital computer having stored therein a mathematical model of the sound profile of the vehicle. Design is such that hardware is shared for those sounds which cannot occur simultaneously.</p> |
