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decimator
- Digital filter in delta-sigma ADC. But only work for RTL code now. Still have bugs in gate-level simulation.
vhdl_sigmadelta
- Sigma-Delta audio DAC. Connect a RC lowpass filter to the pin to reduce noise and improve the audio quality.
filter loop
- sigma-deltaADC的环路滤波器设计FPGA实现(realise sigma-delta ADC and it filter)