Discovery, control, and streaming of multi-channel audio playback with enhanced time synchronization
Described herein are systems, devices, and methods for generating a synchronized time value for a wireless speaker having a first timer and a second timer. In some embodiments, the systems, devices, and method may include reading a first timer value associated with the first timer, wherein the first timer is synchronized with a wireless network. Further, a first timer value associated with the second timer may be read. The first timer value associated with the second timer may be correlated to the first timer value associated with the first timer to generate the synchronized time value for the wireless speaker.
1. A method for generating a synchronized time value for a wireless speaker having a first timer and a second timer, the method comprising:
reading a first timer value associated with the first timer, wherein the first timer is synchronized with a wireless network;
reading a first timer value associated with the second timer;
correlating the first timer value associated with the second timer to the first timer value associated with the first timer to generate the synchronized time value for the wireless speaker; and
generating a drift ratio based on the first timer value associated with the first timer, a second timer value associated with the first timer, the first timer value associated with the second timer, and a second timer value associated with the second timer, wherein the first timer value associated with the first timer is read subsequent to a reading of the second timer value associated with the first timer, and wherein the first timer value associated with the second timer is read subsequent to a reading of the second timer value associated with the second timer.
2. The method according to claim 1 , wherein the synchronized time value for the wireless speaker is based on the drift ratio.
3. The method according to claim 2 , wherein the first timer is a Time Synchronization Function (TSF) timer.
4. The method according to claim 2 , wherein the first timer value is associated with a timing measurement (TIMINGMSMT) value.
5. The method according to claim 1 , wherein at least one of the first timer and the second timer is a free running counter.
6. The method according to claim 1 , wherein the first timer resides in a first speaker component and the second timer resides in a second speaker component.
7. The method according to claim 1 , further comprising playing audio content based on the synchronized time value.
8. A wireless speaker comprising:
a first timer;
a second timer;
one or more processors; and
memory, wherein the memory contains one or more processor-executable instructions that when executed, cause the one or more processors to:
read a first timer value associated with a first timer, wherein the first timer is synchronized with a wireless network;
read a first timer value associated with a second timer;
correlate the first timer value associated with the second timer to the first timer value associated with the first timer to generate a synchronized time value for the wireless speaker; and
generate a drift ratio based on the first timer value associated with the first timer, a second timer value associated with the first timer, the first timer value associated with the second timer, and a second timer value associated with the second timer, wherein the first timer value associated with the first timer is read subsequent to a reading of the second timer value associated with the first timer, and wherein the first timer value associated with the second timer is read subsequent to a reading of the second timer value associated with the second timer.
9. The wireless speaker according to claim 8 , wherein the one or more processor-executable instructions cause the one or more processors to generate the synchronized time value for the wireless speaker based on the drift ratio.
10. The wireless speaker according to claim 9 , wherein the first timer is a Time Synchronization Function (TSF) timer.
11. The wireless speaker according to claim 9 , wherein the first timer value is associated with a timing measurement (TIMINGMSMT) value.
12. The wireless speaker according to claim 8 , wherein at least one of the first timer and the second timer is a free running counter.
13. The wireless speaker according to claim 8 , wherein the first timer resides in a first speaker component and the second timer resides in a second speaker component.
14. The wireless speaker according to claim 8 , wherein the one or more processor-executable instructions cause the one or more processors to play audio content based on the synchronized time value.
15. A computer-readable device storing one or more instructions thereon, that when executed by one or more processors, cause the one or more processors to:
read a first timer value associated with a first timer;
read a first timer value associated with a second timer;
correlate the first timer value associated with the second timer to the first timer value associated with the first timer to generate a synchronized time value for a wireless speaker; and
generate a drift ratio based on the first timer value associated with the first timer, a second timer value associated with the first timer, the first timer value associated with the second timer, and a second timer value associated with the second timer, wherein the first timer value associated with the first timer is read subsequent to a reading of the second timer value associated with the first timer, and wherein the first timer value associated with the second timer is read subsequent to a reading of the second timer value associated with the second timer.
16. The computer-readable device according to claim 15 , wherein the synchronized time value for the wireless speaker is based on the drift ratio.
17. The computer-readable device according to claim 15 , wherein the one or more instructions cause the wireless speaker to play audio content based on the synchronized time value.