<span style="font-size: inherit;">customers' requirement</span><br>
funcionality
maneuverability
less damage
quality
price
safety
usage mood
place on the strings then automatic tuning
functions
pitch detection and Detect scale frequency
display the distance between the current tone and the target tone
display the difference in pitch frequencies
automatch
the indicator lights tune the standard strings
Selective regulation speed
Switch metronome
brainstorming design
Product Design blueprint
Lay the sketch
brainstorm
Lay down the final design through heated discussion
