my main use of buds+ Ambient mode is to help hear other people talk to me, or the Announcer in public place, such as the Airport while I listen to music.  However when I turn on Ambient mode, and especially with max volume,  all I can hear is the ambient fan-sound, and water fountain sound.   I suggest if the Ambient mode audio input is processed through a low-pass filter to filter off higher frequency sound (> 500kHz) and amplify only human voice spectrum, like actual human ear does, this mode would be much more useful.  To push the idea further, if buds+ can detect human voice actively and temporarily lower the audio sound volume to high-light human voice, that would be a great feature in buds+.  ... View more