MULTIUSER, GEOFIXED ACOUSTIC SIMULATIONS

摘要

A system for multiuser, geofixed acoustic simulations using a shared soundscape built and stored on a central server, via interfaces that also allow for live and competitive modification. A central server disseminates sound events from the soundscape to individual devices carried by users, which integrate geolocation information, head orientation information, and head-related transfer functions (HRTFs) to generate user-specific audio feeds. The audio feeds may be played through headsets so that users perceive the shared, geofixed sound events.

主权项

1. A system for multiuser, geofixed acoustic simulations, the system comprising:
a central server including:
a memory configured to store a soundscape profile defining a plurality of sound events, each of the plurality of sound events having an associated waveform, location/timing information, and trigger criteria;a soundscape controller operatively coupled to the soundscape profile and configured to select ones of the plurality of sound events based upon the trigger criteria; anda wireless transmitter operatively coupled to the soundscape controller to transmit information about selected sound events; and a plurality of user devices, each of the user devices including:
a head orientation module configured to provide information about the orientation of a user's head;a wireless receiver configured to receive information about sound events transmitted from the central server; anda sound event processor operatively coupled to the head orientation module and configured to:
receive, using the wireless receiver, a waveform and a geographic location associated with a sound event;level-adjust the waveform based upon a distance between a geographic location associated with the device and the geographic location associated with the sound event;apply a left-ear head-related transfer function (HRTF) to the received waveform to generate a left audio feed; andapply a right-ear HRTF to the received waveform to generate a right audio feed.