What are the electronic components that affect pitch and volume stability due to temperature changes in OpenTheminV3?

I understand that not all components will affect the stability of volume and pitch with temperature changes, so I would like to use more precise electronic components for some circuits instead of all, as that would increase costs. Please have experienced friends give me some guidance, thank you!

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The following is the circuit schematic diagram

Mainly L1 and L2, but it doesn't matter how precise they are, only what the temperature coefficient is.

You would have to use air core coils to make a big improvement.

Instead of that, I would suggest adding a temperature sensor and modifying the software to apply a compensating voltage via the tuning DACs.

主要是L1和L2，但不管它们有多精确，只管温度系数是多少。您必须使用空芯线圈才能进行重大改进。取而代之的是，我建议添加一个温度传感器并修改软件，以通过调谐DAC施加补偿电压。