Analog Delta-Sigma interpolation DAC

[U130421]

 

[U130421]

Why the Blackman-Harris shows no trace of image has a lot on 20khz.

This is Hamming.

 

[Hans Polak]

What about 19Khz?

Hans

 

[TNT]

Seems to be down 40 dB at Fs/2. Are you satisfied with this mirror wise? Do you have a goal for this aspect?

//

 

[U130421]

This is for 19khz Hamming.

and this the B-H.

At 22khz after 5ms it levels to -0.6db.

 

[U130421]

transients 19khz Hamming

B-H

 

[U130421]

I am looking at Farrow interpolator.
https://ccrma.stanford.edu/~jos/Interpolation/Interpolation_4up.pdf

 

[scott wurcer]

View attachment 927804

 

[Hans Polak]

I am looking at Farrow interpolator.
https://ccrma.stanford.edu/~jos/Interpolation/Interpolation_4up.pdf

Hayk,
I was curious to hear wether you made some progress.

Hans

 

[U130421]

I will not be able to go back home before next year to continue with the hardware of this project. I am learning nowadays about the STM32h750 programming.

 

[Hans Polak]

Succes