this PR set enable and speak_enable to nil for volume zero app.
setting volume0 means that robot speaks but no voice.
this causes interruption when other nodes speaks something.
this PR changes to set enable and speak_enablenil.
this change does not sent sound_play action, so it does't interrupt any other nodes.
this PR set
enable
andspeak_enable
tonil
forvolume zero
app. settingvolume
0
means that robot speaks but no voice. this causes interruption when other nodes speaks something.this PR changes to set
enable
andspeak_enable
nil
. this change does not sentsound_play
action, so it does't interrupt any other nodes.