How to organize the food of the DAC?

Question

Audio

I am developing a USB DAC on ES9023 and TPA6120. Would it be right to just merge all gnd into one polygon, if not, how should it be done? I will also listen to advice about stabilizing the power supply of the DAC and amplifier.
LPF on a separate circuit.

Answer 1

Learn from the Pros:

This is a professional audio interface. You can see that the Cirrus Logic DAC (center) is surrounded by a personal ground test area.
Further, if you watch the EEVBlog video , you can see that in many professional devices there are several jumpers in the ground, of which only one is closed - the selection is carried out according to the lowest noise level

Answer 2

1) For the model, make the base model and inherit from it
2) For the controller, make the base controller and inherit from it.
3) Make only one folder available and redirect to it already
4) Add composer
5) Use PSR4 It is
better to peep the structure at https://github.com/laravel/laravel