AUDIO SOURCE SPATIALIZATION
An audio customization system operates to enhance a user's audio environment. A user may wear headphones and specify what portion the ambient audio and/or source audio will be transmitted to the headphones or the personal speaker system. The audio signal may be enhanced by application of a spatialized transformation using a spatialization engine such as head-related transfer functions so that at least a portion of the audio presented to the personal speaker system will appear to originate from a particular direction. The direction may be modified in response to movement of the personal speaker system.
1 . An audio spatialization system comprising:
a personal speaker system with an input representative of an audio input;
an audio spatialization engine having an output representative of said audio output of said personal speaker system;
an audio source having an output connected to said audio spatialization engine;
a motion sensor associated with said personal speaker system; and
a listener position orientation unit having an input connected to said motion sensor and an output connected to said audio spatialization engine representing the position and orientation of said personal speaker system;
wherein said audio spatialization engine adds spatial characteristics to said output of said audio source on the basis of output of said listener position/orientation unit.
2 . An audio spatialization system further comprising:
a directional cue reporting unit having an output representative of a direction connected to said audio spatialization engine; and
wherein said audio spatialization engine adds spatial characteristics to said output of said audio source on the added basis of said output representative of a direction of said directional cue reporting unit.
3 . An audio spatialization system according to claim 2 wherein said directional cue reporting unit further comprises a location processor connected to a beamforming unit; a beam steering unit and a directionally discriminating acoustic sensor associated with said personal speaker system.
4 . An audio spatialization system according to claim 3 wherein said directionally discriminating acoustic sensor is a microphone array.
5 . An audio spatialization engine according to claim 4 wherein said motion sensor is an accelerometer, a gyroscope, or a magnetometer.
6 . An audio spatialization system according to claim 5 wherein said audio spatialization engine applies head related transfer functions to said output of said audio source.