Feature/filter design scripts#185
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astewart-xmos merged 16 commits intoxmos:developfrom Jun 5, 2023
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- Generate sensible coefficients for decimation to 16 kHz or 32kHz - 3 stage and smaller filter coefficients also generated - Plotting tools to show filter response - int16 or float coefficients
… design scripts. - New filters have same number of stages, decimation factors and tap counts as previous. - Also updates several python scripts to correctly use coefficients from filter design scripts
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I've pushed an update to this branch which changes the library filter coefficients to those produced by @Allan-xmos's filter design script. I confirmed that the lib_mic_array demo apps all build, and did a simple listening test with a Avona board to verify that decent the audio coming out isn't horribly garbled. |
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Note: @keithm-xmos has requested that a readme be added for the filter design scripts. Should not merge PR until a readme has been written. |
astewart-xmos
added
status:work in progress
… into feature/filter_design_scripts * askellet/feature/filter_design_scripts: Fix stage 2 filter coef array
…n_scripts * xmos/develop: Change DCOE filter pole from 255/256 to 252/256
… into feature/filter_design_scripts * askellet/feature/filter_design_scripts: Add README for filter design scripts, document filter design functions
astewart-xmos
approved these changes
Jun 5, 2023
… into feature/filter_design_scripts * askellet/feature/filter_design_scripts: update stage 1 and stage 2 plots in programming guide
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