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The `Resample` DSP component instantiates quite large FIR filters for upsampling beyond 4x, this can quickly eat FPGA area and is heavily used for scope plotting (interpolating lines from points).
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There is wrapper for FIR filters from DSP.jl.
What about IIR filters, like butter etc.?
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quantization_tests.cpp shows how to optimize the coefficients of a FIR filter synthesize by fquantizer.
Is there a way to optimize the coefficients of a FIR filter synthesize by another program?
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Most or all of the FIR filters are unsafe and require the user to set the **output** format in a (strange and arbitrary) way that backwards-connects to internal formats. In most or all cases, no error…
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Currently the octave spectrum uses IIR filters with decimation to go from one octave to the next. It would be smarter to use FIR instead of IIR filters, since they are more stable to numeric issues, a…
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I came across the following error when I used **ezmsg.sigproc.wavelets.CWT** to do wavelet transform:
```
2024-11-03 09:59:44.909 - pid: 36349 - TaskThread - WARNING - windowing: windowing is non-…
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Mathematically, a Coefficients filter has to have at least one numerator, which can be 1. Otherwise the output time series would be all zeros.
A no-coefficient Coefficient filter might be used to j…
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On the server Giant Panda #62 I found a stretch of land that generated without Biome according to ingame filters.
It has mostly Grassland grass, with a small patch of Wetland Grass, mostly Cold Fores…
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DSP-related functions and features
## Moving Average Filters
- [ ] Simple moving average filter
- [ ] Windowed moving average filter
- [ ] Weighted moving average filter
## IIR Filters
T…
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Since the 16kHz are no longer being updated, we need to adjust the audio step to download from a different source.
The best way to go about this is to build a new PTransform class the expects the sa…