n center">
            <md-button id="startButton"
                       class="md-raised md-accent" flex
                       ng-disabled="!microphoneStartEnabled"
                       ng-click="microphone.startRecording();">
                <md-icon>mic</md-icon>
                Start Recording
            </md-button>

            <md-button id="stopButton"
                       class="md-raised md-warn" flex
                       ng-disabled="!microphoneStopEnabled"
                       ng-clic