I am working on a car infotainment design with Vbatt ranges from 6V to 16V.
I do not want to add a buck-boost converter to maintain a fix voltage supplying to the speaker amplifier considering the board area and power dissipation increase.
I am wondering if there is a good correlation (plot) between output volume level and input vbatt voltage.
And if the audio volume change is noticeable when vbatt swings 3Vpk-pk, 2Vpk-pk, or 1Vpk-pk.
It will be great if you can recommend me the industry practice for the voltage supply to the speaker amp.
thanks,
Chris