Method, electronic apparatus and wireless earphone of choosing master wireless earphone in wireless earphone set

An electronic apparatus of choosing a master wireless earphone in a wireless earphone set, comprising:

• a transceiver;
• a storage circuit, storing a plurality of modules;
• and
• a processing circuit, coupled with the transceiver and the storage circuit, accessing and executing the modules, wherein the modules comprise:
• a first testing module, transmitting a plurality of first testing signals to a first wireless earphone in the wireless earphone set and receiving a plurality of first acknowledgment signals, wherein the first acknowledgment signals are returned to the electronic apparatus by the first wireless earphone due to correctly receiving a first part of the first testing signals;
• a second testing module, transmitting a plurality of second testing signals to a second wireless earphone in the wireless earphone set and receiving a plurality of second acknowledgment signals, wherein the second acknowledgment signals are returned to the electronic apparatus by the second wireless earphone due to correctly receiving a second part of the second testing signals;
• a determining module, determining whether a first acknowledgment ratio of the first acknowledgment signals to the first testing signals is higher than a second acknowledgment ratio of the second acknowledgment signals to the second testing signals;
• and
• a choosing module, choosing the first wireless earphone as a master earphone of the wireless earphone set and setting the second wireless earphone as the slave earphone of the wireless earphone set if the first acknowledgment ratio is higher than the second acknowledgment ratio, or else, choosing the second wireless earphone as the master earphone of the wireless earphone set and setting the first wireless earphone as the slave earphone of the wireless earphone set.

A wireless earphone, belonging to a wireless earphone set with another wireless phone, comprising:

• a transceiver;
• a storage circuit, storing a plurality of modules;
• and
• a processing circuit, coupled with the transceiver and the storage circuit, accessing and executing the modules, wherein the modules comprise:
• a receiving module, receiving a plurality of testing signals from an electronic apparatus paring with the wireless earphone set;
• an acknowledging module, finding out parts contained in the testing signals which match a preset signal and correspondingly generating a plurality of acknowledgment signals;
• and
• a transmitting module, returning the acknowledgment signals to the electronic apparatus, such that the electronic apparatus chooses a master wireless earphone in the wireless earphone set.