Thank you @Volusiano for moving our posts to this thread and continuing the discussion. Thank you as always for the detailed responses.
1 HEADROOM: Regarding frequency normalization and headroom adjustments, I plan to visit an audiologist (even that person is 40+ miles away) to verify my programmed settings and ensure that my frequency adjustments are safe and logical. The distance and hassle may be worth it, but this audiologist received multiple recommendations. I also hope to find out how to increase headroom from 2 clicks to maybe 3 or 4. I tried adjusting the MPO levels to a higher value as per the screenshot below, but saw no changes in the gain levels (area where there are four arrows with a label of -2.5db, 5db, 7.5db, or 10db next to the charts in Fine Tuning section). If anyone has suggestions on how to increase the headroom and have an idea for safe parameters, happy to hear folks’ thoughts.
2 TELECOIL: Yes I did buy the miniRITE-T version, which has a telecoil. It also has a double volume rocker for separate volume up and volume down actions, which was the primary reason why I opted for that model over others. My old Altas and Epoqs did activate a telecoil automatically with cell phones and landlines that had these magnets. However, with the landlines - specifically the CaptionCall telephone - and my cell phone - Samsung Galaxy S8 Plus, the telecoil does not activate automatically for some unknown reason. Until I get an iPhone, I will have to rely on the telecoil and will have to figure out how to activate the telecoil automatically, so as to remove the Phone telecoil program and use it for another more useful program. I tried setting the programming for an automatic switch by going to “End Fitting => Accessories => Autophone” section as per the below screenshot, but I still don’t have this automatic switch when using telephones. Does anyone know if this automatic switch to telecoil is a programming feature that needs to be enabled?
3 SPEECH RESCUE: Your explanation and the previously linked whitepaper were helpful, particularly in showing the 10 different frequency bands as options. What is unclear is the algorithm on how Speech Rescue chooses a band from the 10 available frequency band options. I was automatically chosen band 7, which is fine, but I wonder if it chose that band by taking the max of the integral or area between the target and similated insertion gain curves (see highlighted yellow section below). If that’s the case, then the automatically chosen bands are correct because from eyeballing, band 7 covers the max area between those two curves.
Regarding the second point on why my initial Program 1 (Default) and Program 2 (Speech in Noise) were different, your suggestion in that the compression ratios being different were indeed correct, hence even with NR, SR, TNM settings being identical, sound output were distinctly different.
Regarding your third point, yes SR was indeed useful because I am able to hear high frequencies that I couldn’t previoulsy hear as noted in this below linked post. I agree with you that Music should contain unmodified sounds (a subjectie preference) so I turned off SR for that program.
4 My program settings are now as follows:
P1 default program: SR On, NR Med, OST Med, TNM Med, Open Automatic, Tinnitus On (Ocean 3 wave)
P2 Speech in Noise; SR On, NR Hi, OST NA, TNM Med, Full Directional, Tinnitus Off (similar to P1 but it sounds louder than P1 slightly)
P3 Lecture: SR On, NR Med, OST Hi, TNM Med, Open Automatic, Tinnitus Off
P4 Music: SR Off, NR Off, OST Off, TNM Off, Pinni Omni, Tinnitus Off
The rationale for choosing for these programs were as follows:
P1 The default program sounded great, but sounded better when adding more NR and having Tinnitus on for soothing/relaxation means
P2 Speech In Noise seemed especially useful in noisy restaurants and pubs where the target audience is most likely ahead of me, hence the full directional and high NR mode
P3 Lecture mode seemed more useful than the Phone telecoil mode, particularly in corporate boardroom settings where speech is more finely attuned with high NR mode
P4 Music for raw, uncompressed sound output for concerts and wireless streaming from iPad (I tried it on my father’s iPad and it sounded fantastic, just like the TV Adapter). I put it in Pinni Omni mode since the target audience is probably in front of me, but didn’t want to lose the omni 360 degree mode. This seemed like a nice compromise.
Legend: SR = Speech Rescue, NR = Noise Reduction where low = 0 or -5 dB/Med = -1.5 or -7 dB/Hi = -3 or -9 dB, OST = Open Sound Transition, Directionality = Open Automatic/Pinni Omni/Full Directional, Tinnitus On/Off
Regarding the wireless streaming options with TV adapter and iPad, is there a way to use a particular program such as Music or does it always use P1 the default program?
5 MANUAL FREQUENCY ADJUSTMENTS: After consulting with the recommended Audiologist, I hope to be more scientific in adjusting the each frequencies gain levels based on what I can hear via the frequency generator websites. I agree with you that Genie is a tool that must be used carefully in which one should not deviate too much from the prescribed curve fittings. However, fine-tuning (by manually increasing the gain) of certain frequencies that I find difficulty in hearing such as 125-250 Hz range or the 6K - 8K Hz range may improve my audio recognition. I’ll share my findings after consulting with the audiologist.
Thanks again all for hearing my thoguhts and your invaluable responses. Looking forward to keeping the dialogue going! Cheers.