Search found 115 matches
- Mon Jul 08, 2024 12:21 pm
- Forum: Software
- Topic: NAL-NL2 with Offline fitting tool
- Replies: 4
- Views: 4055
Estimating physical sound level from sound recording with unknown calibration setup (difficult to impossible)
1) How can I set the input SPL peak level? I mean, if I only have a wav audio file (downloaded from the internet or obtained from anywhere), how can I estimate the input SPL peak level? Is there any preprocessing I can do to normalize or effectively estimate it? Typical hearing aid processing uses ...
- Sun Jul 07, 2024 6:52 pm
- Forum: Software
- Topic: NAL-NL2 with Offline fitting tool
- Replies: 4
- Views: 4055
Determining available headroom in sound files
2) Regarding post-processing, how should I select the gain value? For example, how did you choose to amplify by -5 or +45 dB as you mentioned? If I am performing automated batch processing (e.g., calculating the amplification for 1000 audio files using NAL-NL2), how can I select or calculate an app...
- Fri Jun 28, 2024 7:54 am
- Forum: Software
- Topic: NAL-NL2 with Offline fitting tool
- Replies: 4
- Views: 4055
On judging quality of sound compressed for high hearing losses
Thank you for providing a detailed description of your processing steps! This makes it possible to reproduce your experience. 1) I used examples /01-dynamic-compression/1speaker_diffNoise_2ch.wav as my input audio file. 2) I used 94 dB as the acoustic input level in dB SPL. 94 dB SPL peak level is a...
- Fri Jun 21, 2024 7:48 pm
- Forum: Software
- Topic: openMHA 4.18.0 released
- Replies: 4
- Views: 3915
Re: openMHA 4.18.0 released
I wanted to be able to build from sources. brew install openmha/tap/openmha is actually compiling openmha from sources on your Mac. We do not provide pre-compiled "bottles" for Mac. I found that OSC was not what I needed to have installed. Instead configure was really looking for libio wh...
- Tue May 28, 2024 7:52 am
- Forum: Software
- Topic: NAL-NL2 pipeline integration
- Replies: 1
- Views: 2655
Re: NAL-NL2 pipeline integration
The offline fitting tool contained in openMHA preprocesses wav files with a dynamic compression prescription rule of your choice. Start it from Matlab or Octave by invoking mhagui_fitting_offline It can process multiple wav files at once. The installation directory of the openMHA mfiles depends on y...
- Fri May 17, 2024 5:36 pm
- Forum: Software
- Topic: NAL-NL2 wrapper, compression threshold
- Replies: 2
- Views: 3354
Re: NAL-NL2 wrapper, compression threshold
Hi Florian, thanks for reaching out! 52dB was used for the wide band compression threshold because that value is the default in the NAL NL2 demo software "NAL-NL2 Clinician Edition". You can see this value in the tab "Target Screen" next to the label "Comp. Threshold". ...
- Mon Sep 04, 2023 6:19 pm
- Forum: Software
- Topic: fftfilterbank ..The plugin that tried to do this is misbehaving and should be fixed.
- Replies: 1
- Views: 7767
Re: fftfilterbank ..The plugin that tried to do this is misbehaving and should be fixed.
Thanks for reporting this behavior! Altering the structure with the mhachain "algos" setting should be possible after cmd=release, then alter the structure, then restart with cmd=start.
I will see how we can modify mhachain in order to improve the error message.
I will see how we can modify mhachain in order to improve the error message.
- Thu Jul 20, 2023 7:25 am
- Forum: The Portable Hearing Laboratory (PHL)
- Topic: Feedback Suppression
- Replies: 1
- Views: 4873
Re: Feedback Suppression
I do not know the afc algorithm very well. There is a good chance that its implementation is still too CPU-hungry to run on the PHL. We usually use a combination of frequency shifting and coherence filtering to achieve feedback suppression in real-time openMHA setups. The afc algorithm stores the op...
- Wed Jun 07, 2023 11:26 am
- Forum: User Applications
- Topic: Feedback suppression configuration
- Replies: 2
- Views: 10969
Re: Feedback suppression configuration
Please see https://github.com/HoerTech-gGmbH/openM ... mha.m#L200 for how to feed a buffer of audio to MHAIOParser, and line 203 in this file for how to read the processed result.
- Fri Apr 07, 2023 5:00 pm
- Forum: The Portable Hearing Laboratory (PHL)
- Topic: Auto Start Node server on Boot
- Replies: 2
- Views: 5835
Re: Auto Start Node server on Boot
If I understand you correctly, then your log on the PHL shows (1) that your nodejs app has actually started, and (2) that your nodejs app reacts to your connection by logging "Cannot get /". If this is not the reaction that you want, then you need to fix this inside your custom nodejs app,...