dsp

Feature Description

Would be nice to be able to do modtool operations from the build/ dir

Here is the sequence I always run into:
'''
gr_modtool add myblock
[go and make the block do something]
cd build
make
[get cmake error that bindings are not present]
gr_modtool bind myblock
[get nasty python error that this is not a module]

### Feature Urgency

medium (would be nice to h

This transform takes a fraction of the end or the start of the audio and treats that part as padding. We can implement several modes:

• constant (zero)
• edge - pads with the edge values of array
• wrap
• reflect