A method for processing an audio signal comprising: receiving a first audio signal via a first receiving path comprising a first microphone; receiving a second audio signal via a second receiving path comprising a second microphone; wherein the first receiving path is different from the second receiving path; performing echo suppression of the first audio signal based on the first audio signal and the second audio signal; wherein performing echo suppression of the first audio signal based on the first audio signal and the second audio signal comprises obtaining an error signal from the difference between the first audio signal and an echo signal estimate, wherein an echo power spectrum density, PSD, is defined as an estimated PSD of a residual echo in the error signal, determining an echo suppression gain based on the echo PSD, and performing echo suppression of the first audio signal based on the determined echo suppression gain and the error signal, characterised in that: performing echo suppression of the first audio signal based on the first audio signal and the second audio signal comprises identifying an echo-only state in which the first and the second signals include only respective echo-signals based on applying a threshold on a level difference between the first audio signal and the second audio signal; and the method further comprises setting the echo PSD to be equal to the error signal PSD, during echo-only periods. receiving a first audio signal via a first receiving path comprising a first microphone; receiving a second audio signal via a second receiving path comprising a second microphone; wherein the first receiving path is different from the second receiving path; performing echo suppression of the first audio signal based on the first audio signal and the second audio signal; wherein performing echo suppression of the first audio signal based on the first audio signal and the second audio signal comprises obtaining an error signal from the difference between the first audio signal and an echo signal estimate, wherein an echo power spectrum density, PSD, is defined as an estimated PSD of a residual echo in the error signal, determining an echo suppression gain based on the echo PSD, and performing echo suppression of the first audio signal based on the determined echo suppression gain and the error signal, characterised in that: performing echo suppression of the first audio signal based on the first audio signal and the second audio signal comprises identifying an echo-only state in which the first and the second signals include only respective echo-signals based on applying a threshold on a level difference between the first audio signal and the second audio signal; and the method further comprises setting the echo PSD to be equal to the error signal PSD, during echo-only periods. performing echo suppression of the first audio signal based on the first audio signal and the second audio signal comprises identifying an echo-only state in which the first and the second signals include only respective echo-signals based on applying a threshold on a level difference between the first audio signal and the second audio signal; and the method further comprises setting the echo PSD to be equal to the error signal PSD, during echo-only periods.