The connected receiver or speaker may have different audio path latency due to different hardware, software and DSP processing. To maintain the synchronization of each system, it’s desirable to measure the audio path delay automatically. By leveraging the on-device microphone and proprietary algorithm, the entire audio path latency is measured automatically when it’s connected with the receiver or speaker. The latency value will be used to maintain the perfect audio synchronization in wireless multi-room or multi-channel playback.