# Ecosystem of SampledSignals

**URL:** <https://discourse.julialang.org/t/ecosystem-of-sampledsignals/49922>\
**Category:** General Usage\
**Tags:** dsp\
**Created:** [November 10, 2020, 4:48pm UTC](https://discourse.julialang.org/t/ecosystem-of-sampledsignals/49922 "2020-11-10T16:48:02Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![phlavenk](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/phlavenk/32/1873_2.png) [@phlavenk](https://discourse.julialang.org/u/phlavenk)\
**Post date:** [November 10, 2020, 4:48pm UTC](https://discourse.julialang.org/t/ecosystem-of-sampledsignals/49922/1 "2020-11-10T16:48:02Z")

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I’d like to ask if there is some consensus in the sampled signal domain on basic type definitions. In my work, I have my algorithms and packages for signal processing (FFT spectrum comparisons, different ways of chopping out “resets” or disturbances, etc, all using `AxisArrays` and dispatching on the `:time` axis with unitful StepRanges. However, digging into JuliaHub, I’ve found the `SampledSignals.jl` package defining `AbstractSampleBuf` and `AbstractSampleStream` that I’d call the basic type for package interaction. But, on the other hand, `SignalAnalysis`, however uses `SampledSignals`, operates on `MetaArrays`.  
It would be just great to have a common trait and an API for all those arrays and streams to be useable.  
I very much regret the `AxisArray` didn’t become the blessed universal interface to deal with all kinds of arrays that have an physical meaningful axis attached, be it FFT, spectroscopy spectra, time series or different types of measurements.  
Did I miss some conversation around the ecosystem? I really liked the way `Images.jl` solved this for image processing ecosystem.

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**Author:** ![Zach\_Christensen](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/zach_christensen/32/7220_2.png) [@Zach\_Christensen](https://discourse.julialang.org/u/Zach_Christensen)\
**Post date:** [November 10, 2020, 5:28pm UTC](https://discourse.julialang.org/t/ecosystem-of-sampledsignals/49922/2 "2020-11-10T17:28:50Z")

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If this PR goes through [https://github.com/SciML/ArrayInterface.jl/pull/83](https://github.com/SciML/ArrayInterface.jl/pull/83) then I can complete this package [https://github.com/JuliaArrays/SpatioTemporalTraits.jl](https://github.com/JuliaArrays/SpatioTemporalTraits.jl) with minimal dependencies. There’s a lot going on under the hood that carefully ties things together across the ecosystem. I will definitely write a detailed post on it when it is ready to start using, but I can’t give any hard deadlines because it’s entire utility depends on getting others on board.