Binaural signal processing techniques

A method of signal processing, comprising:

• (a) detecting an acoustic excitation at a first location to provide a corresponding first signal and at a second location to provide a corresponding second signal, the excitation being a composite of a desired acoustic signal from a first source and an interfering acoustic signal from a second source spaced apart from the first source;
• (b) localizing the second source relative to the first source as a function of the first and second signals, said localizing including establishing a number of location signals each corresponding to a different location relative to the first source, delaying each of the first and second signals by a number of time intervals to provide a number of delayed first signals and a number of delayed second signals, and establishing a signal pair that has a first member from the delayed first signals and a second member from the delayed second signals;
• and
• (c) generating a characteristic signal from the location signals, wherein the characteristic signal includes a spectral representation of the desired acoustic signal from the first source, corresponds to position of the second source, and is determined from the signal pair.

A method of signal processing, comprising:

• detecting an acoustic excitation at both a first location to provide a corresponding first signal and at a second location to provide a corresponding second signal, the excitation being a composite of a desired acoustic signal from a first source and an interfering acoustic signal from a second source spaced apart from the first source;
• incrementally delaying the first signal to provide a number of delayed first signals and the second signal to provide a number of delayed second signals, a number of different pairings of the delayed first signals and the delayed second signals representing different locations;
• localizing the second source relative to one of the different locations as a function of a difference between the members of a corresponding one of the different pairings;
• and
• generating a characteristic signal representative of spectral content of the desired acoustic signal based on the difference and a time increment corresponding to distance separating the first source and the second source.

A method of signal processing, comprising:

• detecting an acoustic excitation at both a first location to provide a corresponding first signal and at a second location to provide a corresponding second signal, the excitation being a composite of a desired acoustic signal from a first source and an interfering acoustic signal from a second source spaced apart from the first source;
• selecting the desired acoustic signal by positioning a reference axis relative to the first source;
• localizing the second source relative to the reference axis as a function of the first and second signals, which includes establishing a number of delayed first signals each corresponding to a different one of a number of first delay stages of a first delay line and a number of delayed second signals each corresponding to a different one of a number of second delay stages of a second delay line;
• and
• generating a characteristic signal representative of the desired acoustic signal during performance of said localizing, which includes determining the characteristic signal as a function of a fraction with a numerator corresponding to a difference between one output of the first delay stages and one output of the second delay stages and a denominator corresponding to a time increment representative of a distance separating the first source and the second source.