Noise estimation for dynamic sound adjustment

A method for audio adjustment, comprising:

• providing, by one or more signal outputs, an audio signal to a transducer;
• transducing, by the transducer, the audio signal into an acoustic signal in a listening space;
• receiving, by a first signal input, a first signal representative of acoustic energy at a first location in the listening space;
• receiving, by a second signal input, a second signal representative of acoustic energy at a second location in the listening space;
• determining, by a coherence calculator, a coherence value between at least a portion of the first signal and the second signal;
• deriving, by a noise estimate computation processor, an estimate of a level of noise in the acoustic energies at the first and second locations in the listening space based on an approximation according to the coherence value and generates an adjustment value from the estimate of the level of noise in the acoustic energies at the first and second locations, respectively;
• and
• applying, by a signal adjustment processor, the adjustment value to the audio signal based on the noise level estimate.

A computer program product for audio adjustment, the computer program product comprising:

• a non-transitory computer readable storage medium having computer readable program code embodied therewith, the computer readable program code comprising;
• computer readable program code configured to receive a first signal representative of acoustic energy at a first location in a listening space;
• computer readable program code configured to receive a second signal representative of acoustic energy at a second location in a listening space;
• computer readable program code configured to determine a coherence value between at least a portion of the first signal and the second signal;
• computer readable program code configured to derive an estimate of a level of noise in the acoustic energies at the first and second locations in the listening space based on an approximation according to the coherence value and generates an adjustment value from the estimate of the level of noise in the acoustic energies at the first and second locations, respectively;
• and
• computer readable program code configured to apply the adjustment value to an audio signal input to a transducer based on the noise level estimate.