A method for audio signal processing, comprising: acquiring audio signals from at least two sound sources respectively through at least two microphones, MICs, to obtain respective original noisy signals of the at least two MICs in a time domain, wherein the number of the at least two sound sources is same as the number of the at least two MICs, the original noisy signal of each of the at least two MICs is a mixed signal including sounds produced by the at least two sound sources, and comprises an audio signal from one of the at least two sound sources and an audio signal(s) which is/are taken as a noise signal(s) from other one(s) of the at least two sound sources; for each frame in the time domain, performing a windowing operation on the respective original noisy signals of the at least two MICs using a first asymmetric window to acquire respective windowed noisy signals of the at least two MICs; performing time-frequency conversion on the respective windowed noisy signals of the at least two MICs to acquire respective frequency-domain noisy signals of the at least two sound sources; acquiring respective frequency-domain estimated signals of the at least two sound sources according to the respective frequency-domain noisy signals of the at least two sound sources; and obtaining audio signals produced respectively by the at least two sound sources according to the respective frequency-domain estimated signals of the at least two sound sources, characterized in that, acquiring the respective frequency-domain estimated signals of the at least two sound sources according to the respective frequency-domain noisy signals of the at least two sound sources comprises: separating the respective frequency-domain noisy signals according to a separation matrix of a preceding frame of a current frame, to obtain frequency-domain priori estimated signals of the at least two sound sources; updating the separation matrix according to the frequency-domain priori estimated signals of the at least two sound sources, to obtain an updated separation matrix as a separation matrix of the current frame; and separating the respective frequency-domain noisy signals according to the separation matrix of the current frame, to obtain separated frequency-domain estimated signals as the frequency-domain estimated signals of the at least two sound sources. acquiring audio signals from at least two sound sources respectively through at least two microphones, MICs, to obtain respective original noisy signals of the at least two MICs in a time domain, wherein the number of the at least two sound sources is same as the number of the at least two MICs, the original noisy signal of each of the at least two MICs is a mixed signal including sounds produced by the at least two sound sources, and comprises an audio signal from one of the at least two sound sources and an audio signal(s) which is/are taken as a noise signal(s) from other one(s) of the at least two sound sources; for each frame in the time domain, performing a windowing operation on the respective original noisy signals of the at least two MICs using a first asymmetric window to acquire respective windowed noisy signals of the at least two MICs; performing time-frequency conversion on the respective windowed noisy signals of the at least two MICs to acquire respective frequency-domain noisy signals of the at least two sound sources; acquiring respective frequency-domain estimated signals of the at least two sound sources according to the respective frequency-domain noisy signals of the at least two sound sources; and obtaining audio signals produced respectively by the at least two sound sources according to the respective frequency-domain estimated signals of the at least two sound sources, characterized in that, acquiring the respective frequency-domain estimated signals of the at least two sound sources according to the respective frequency-domain noisy signals of the at least two sound sources comprises: separating the respective frequency-domain noisy signals according to a separation matrix of a preceding frame of a current frame, to obtain frequency-domain priori estimated signals of the at least two sound sources; updating the separation matrix according to the frequency-domain priori estimated signals of the at least two sound sources, to obtain an updated separation matrix as a separation matrix of the current frame; and separating the respective frequency-domain noisy signals according to the separation matrix of the current frame, to obtain separated frequency-domain estimated signals as the frequency-domain estimated signals of the at least two sound sources. separating the respective frequency-domain noisy signals according to a separation matrix of a preceding frame of a current frame, to obtain frequency-domain priori estimated signals of the at least two sound sources; updating the separation matrix according to the frequency-domain priori estimated signals of the at least two sound sources, to obtain an updated separation matrix as a separation matrix of the current frame; and separating the respective frequency-domain noisy signals according to the separation matrix of the current frame, to obtain separated frequency-domain estimated signals as the frequency-domain estimated signals of the at least two sound sources.