According to the data sheet, the ES9018 can be programmed to use custom coefficients in the 2 stage FIR filter.
The way how to enter the coefficients is the registry is described quite clearly. But does anyone know to calculate these coefficients?
Each of the 8 channels can be programmed to have its own filter. Would it not be an ideal solution to making it a great and simple cross-over?
I now run the cross-over on the PC, sending 8 channels over USB to XMOS and than to 4 I2S datalines to the ES9018.
If I knew how to model the filters, I could skip the PC filters.
I have been looking everywhere invain for information on it, and I'm no FIR/DSP expert. Does anyone know how to do this?
The way how to enter the coefficients is the registry is described quite clearly. But does anyone know to calculate these coefficients?
Each of the 8 channels can be programmed to have its own filter. Would it not be an ideal solution to making it a great and simple cross-over?
I now run the cross-over on the PC, sending 8 channels over USB to XMOS and than to 4 I2S datalines to the ES9018.
If I knew how to model the filters, I could skip the PC filters.
I have been looking everywhere invain for information on it, and I'm no FIR/DSP expert. Does anyone know how to do this?
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