MASG_release_0.3.0

[1] Using the encapsulated generator function, the speech data set is read automatically
and circularly, to generate the microphone array speech in room acoustic.
[2] Support simultaneous generation of microphone array signals with four signal-to-noise
ratios (-5dB, 0dB, 5dB, 10dB) and seven reverberation times (200ms, 300ms, 400ms, 500ms,
600ms, 700ms, 800ms).