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about the microphone mute and volume control command

Pin Guo
Prodigy 70 points

Thanks a lot for the answers for our former post and questions.  I have verified them on last post.

But the remaining question i have to post here in a new post, hope still can get confirmation because our project waiting for these functions to be verified.

1. probabely another bug, we found microphone mute command is invalid from slave side send to PC side, that means slave side can not toggole the PC input mute status.

2. is there microphone volume increase and decrease command in 8531 firmware?  As for standard USB audio class protocol, both input and output have volume control.