Audio signal processing system and method
First Claim
1. An apparatus to process a plurality of input audio signals comprising:
- a plurality of input terminals to accept a plurality of input signals;
a multi-input, multi-output reverberator accepting the plurality of input signals and arranged to generate a set of output signals, including delayed reverberation components simulating the reverberations a listener is likely to hear in a listening environment; and
a multi-input, two-output filter with inputs coupled to the outputs of the reverberator, the inputs further coupled to the plurality of input terminals, the filter having two outputs, one for the left ear and one for the right ear, the filter arranged to implement a set of head related transfer functions corresponding to a listening environment and a set of directions of a listener in the listening environment, the two outputs playable through headphones, such that a listener listening to the left and right output signals in the listening environment through headphones has the sensation of listening to the plurality of input audio signals as if they are emanating from a plurality of loudspeakers spatially located in the listening environment to form a corresponding plurality of directions for the listener.
2 Assignments
0 Petitions
Accused Products
Abstract
A method, an apparatus, and a software product to process a plurality of input audio signals. The apparatus accepts a plurality of input signals and includes a multi-input, multi-output reverberator arranged to generate a set of output signals including delayed reverberation components simulating the reverberations a listener is likely to hear in a listening environment. The apparatus further includes a multi-input, two-output filter accepting the outputs of the reverberator and the plurality of input terminals, providing outputs for the left and right ears, and configured to implement a set of head related transfer functions corresponding to a listening environment and a set of directions of a listener in the listening environment. The apparatus is such that a listener listening to the outputs through headphones has the sensation of listening to the plurality of input audio signals as if they are emanating from a plurality of loudspeakers spatially located in the listening environment at a corresponding plurality of directions.
38 Citations
52 Claims
-
1. An apparatus to process a plurality of input audio signals comprising:
-
a plurality of input terminals to accept a plurality of input signals;
a multi-input, multi-output reverberator accepting the plurality of input signals and arranged to generate a set of output signals, including delayed reverberation components simulating the reverberations a listener is likely to hear in a listening environment; and
a multi-input, two-output filter with inputs coupled to the outputs of the reverberator, the inputs further coupled to the plurality of input terminals, the filter having two outputs, one for the left ear and one for the right ear, the filter arranged to implement a set of head related transfer functions corresponding to a listening environment and a set of directions of a listener in the listening environment, the two outputs playable through headphones, such that a listener listening to the left and right output signals in the listening environment through headphones has the sensation of listening to the plurality of input audio signals as if they are emanating from a plurality of loudspeakers spatially located in the listening environment to form a corresponding plurality of directions for the listener. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. A method to process a plurality of input audio signals comprising:
-
accepting a plurality of input signals;
generating a set of reverberator output signals from the plurality of input signals, the generating including forming delayed reverberation components that simulate the reverberations a listener is likely to hear in a listening environment; and
filtering combinations of the input signals and reverberator output signals to produce two outputs, one for the left ear and one for the right ear, the filter implementing a set of head related transfer functions corresponding to a listening environment and a set of directions of a listener in the listening environment, the two outputs playable through headphones, such that a listener listening to the left and right output signals in the listening environment through headphones has the sensation of listening to the plurality of input audio signals as if they are emanating from a plurality of loudspeakers spatially located in the listening environment to form a corresponding plurality of directions for the listener. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
-
-
37. A carrier medium carrying at least one code segment to instruct at least one processor of a processing system to implement a method, the method to process a plurality of input audio signals, the method comprising:
-
accepting a plurality of input signals;
generating a set of reverberator output signals from a plurality of input signals, the generating including forming delayed reverberation components simulating the reverberations a listener is likely to hear in a listening environment; and
filtering combinations of the input signals and reverberator output signals to produce two outputs, one for the left ear and one for the right ear, the filter implementing a set of head related transfer functions corresponding to a listening environment and a set of directions of a listener in the listening environment, the two outputs playable through headphones, such that a listener listening to the left and right output signals in the listening environment through headphones has the sensation of listening to the plurality of input audio signals as if they are emanating from a plurality of loudspeakers spatially located in the listening environment to form a corresponding plurality of directions for the listener. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
-
-
51. An apparatus to process a plurality of input audio signals comprising:
-
means for accepting a plurality of input signals;
means for generating a set of reverberator output signals from a plurality of input signals, including forming delayed reverberation components simulating the reverberations a listener is likely to hear in a listening environment; and
means for filtering combinations of the input signals and reverberator output signals to produce two outputs, one for the left ear and one for the right ear, the filter implementing a set of head related transfer functions corresponding to a listening environment and a set of directions of a listener in the listening environment, the two outputs playable through headphones, such that a listener listening to the left and right output signals in the listening environment through headphones has the sensation of listening to the plurality of input audio signals as if they are emanating from a plurality of loudspeakers spatially located in the listening environment to form a corresponding plurality of directions for the listener. - View Dependent Claims (52)
-
Specification