The open Master Hearing Aid Forum

JacopoC, I've used an RPi 4 model B to compile a test plugin and other code for the PHL, but if you don't have one laying around you might want to wait a few weeks for a new Mahalia release before you buy one. There's been a lot of work on this lately for compiling directly on the PHL with progress ...

There's a problem running the BLE interface with the latest images (it has to do with node versions - no fun). It's possible to get this running though by updating some files on the PHL. There's a blog post about it with instructions at: https://bc-support.github.io/posts/BLE/ Let me know if you try...

Have you looked at the C++ code? It would be in your openMHA directory, openMHA/mha/plugins/fshift_hilbert/fshift_hilbert.cpp I'm not familiar with the algorithm myself. The documentation cites this reference for the fshift_hilbert: Scott Wardle. 'A hilbert-transformer frequency shifter' Proc. DAFX9...

I'm afraid I don't have much experience with this example. Have you looked at example 31, Adaptive Feedback Canceller? It might have a few more clues and it also explains more about the current state of the feedback canceller.

There are probably other people on here that could add more info.

There's a new blog post outlining a bare bones Ecological Momentary Assessment (EMA) system on the BatAndCat support site: https://bc-support.github.io/posts/EMA/ The example project demonstrates the basic techniques of saving data to files, setting the time on the PHL and playing sample .wav files....

Is this on the PHL?
I don't know much about node servers, but the Node Red service is set up on the PHL in
/etc/systemd/system/multi-user.target.wants/mahalia-nodered.service

Maybe there are some clues from that configuration?

Here's what I came up with for Python running on Linux. Assumes your host machine is connected to the PHL via WiFi of course. import sys import os sys.path.append('../../mha/tools/python') #set this so it matches your setup from openMHA import MHAConnection mha = MHAConnection("10.0.0.1",3...

The Node Red setup is hard to describe here, I'll make blog post about it to show more detail. I'm not real familiar with Node Red so this code is of the copy/paste variety. It seems to work though. It makes a button using the 'template' node from under Dashboard. The 'Template' section contains the...

What a coincidence, I was just working on this. (I have a feeling Hendrik may have played a part here.) The simple answer is you need to set the correct date and time on the PHL using Linux. If you ssh into the PHL ('ssh mha@10.0.0.1'), then at the command line set the date (with sudo for permission...

After going through the code and running some tests, I think the FIR filtering is done first, then the soft clipper. I turned on the soft clipper and set the threshold so I could see the clipping in the In/Out curve (No FIR). Then, I kept the same threshold for clipping and set the FIR filter to [0....