Featured　Application　The　proposed　MASS　can　simulate　multiple　signals　collected　by　microphone　array　in　room　acoustic　environment　for　multi-channel　speech　coding　and　enhancement.　Abstract　Multi-channel　speech　coding　and　enhancement　is　an　indispensable　technology　in　speech　communication.　In　order　to　verify　the　effectiveness　of　multi-channel　speech　coding　and　enhancement　methods　in　the　research　and　development,　a　microphone　array　speech　simulator　(MASS)　used　in　room　acoustic　environment　is　proposed.　The　proposed　MASS　is　the　improvement　and　extension　of　the　existing　multi-channel　speech　simulator.　It　aims　to　simulate　clean　speech,　noisy　speech,　clean　speech　with　reverberation,　noisy　speech　with　reverberation,　and　noise　signals　by　microphone　array　used　for　multi-channel　coding　and　enhancement　of　speech　signal　in　room　acoustic　environment.　The　experimental　results　of　the　multi-channel　speech　coding　and　enhancement　prove　that　the　MASS　could　well　simulate　the　signals　used　in　real　room　acoustic　environment　and　can　be　applied　to　the　research　of　the　related　fields.