{
	speaker:{
		io:"output",
		map-on:{
			interface:"alsa",
			name:"AD1989A_outputs",
			timestamp-mode:"trigered",
		},
		frequency:48000,
		channel-map:[
			"front-left", "front-right",
		],
		type:"int16",
		nb-chunk:6000,
		volume-name:"MASTER",
		mux-demux-type:"int16-on-int32",
	},
	microphone:{
		io:"input",
		map-on:{
			interface:"alsa",
			name:"AD1989A_inputs",
			timestamp-mode:"trigered",
		},
		frequency:48000,
		channel-map:[
			"front-left", "front-right"
			, "rear-left", "rear-right"
		],
		type:"int16",
		nb-chunk:6000,
		mux-demux-type:"int16",
	},
	speakerGroup:{
		io:"output",
		map-on:{
			interface:"alsa",
			name:"hw:0,0",
			timestamp-mode:"trigered",
		},
		group:"baseIOSynchrone",
		frequency:48000,
		channel-map:[
			"front-left", "front-right",
		],
		type:"int16",
		nb-chunk:1024,
		volume-name:"MASTER",
		mux-demux-type:"int16-on-int32",
	},
	microphone-front:{
		io:"input",
		map-on:{
			interface:"alsa",
			name:"hw:0,0,0",
			timestamp-mode:"trigered",
		},
		group:"baseIOSynchrone",
		frequency:48000,
		channel-map:[
			"front-left", "front-right"
		],
		type:"int16",
		nb-chunk:1024,
		mux-demux-type:"int16",
	},
	microphone-rear:{
		io:"input",
		map-on:{
			interface:"alsa",
			name:"hw:0,0,1",
			timestamp-mode:"trigered",
		},
		group:"baseIOSynchrone",
		frequency:48000,
		channel-map:[
			"rear-left", "rear-right"
		],
		type:"int16",
		nb-chunk:1024,
		mux-demux-type:"int16",
	},
	# virtual Nodes :
	microphone-clean:{
		io:"aec",
		# connect in input mode
		map-on-microphone:{
			# generic virtual definition
			io:"input",
			map-on:"microphone-muxed",
			resampling-type:"speexdsp",
			resampling-option:"quality=10"
		},
		# connect in feedback mode
		map-on-feedback:{
			io:"feedback",
			map-on:"speaker",
			resampling-type:"speexdsp",
			resampling-option:"quality=10",
		},
		#classical format configuration:
		frequency:16000,
		channel-map:[
			"front-left", "front-right", "rear-left", "rear-right"
		],
		type:"int16",
		# AEC algo definition
		algo:"river-remover",
		algo-mode:"cutter",
		feedback-delay:10000, # in nanosecond
		mux-demux-type:"int16",
	},
	microphone-muxed:{
		io:"muxer",
		map-on-input-1:{
			# generic virtual definition
			io:"input",
			map-on:"microphone-front",
			resampling-type:"speexdsp",
			resampling-option:"quality=10"
		},
		map-on-input-2:{
			io:"input",
			map-on:"microphone-rear",
			resampling-type:"speexdsp",
			resampling-option:"quality=10",
		},
		frequency:48000,
		channel-map:[
			"front-left", "front-right", "rear-left", "rear-right"
		],
		type:"int16",
		mux-demux-type:"int16",
	},
}