Hello @luoxihappy

Your posting is over a year old and I'm not sure if you found resolution.

For comparison, my hearing loss begins at 40db at 250 Hz and goes to 80 db at Khz. My Speech in Noise score is 12.

I wear Phonak Lumity 90s after upgrading from Phonak Marvel 70s. While the Lumity HAs do perform better than the Marvel 70s, I still struggle in very noisy environments. To have a better understanding and to share with my audiologist exactly where I was having problems, I downloaded an app to my phone called DecibelX. It's a pretty accurate sound meter for measuring sound level of your environment. I then kept a log of every venue I visited (theater, restaurant, retail store, grocery store kwik mart etc) and the sound levels I experienced in each venue. This gives the audiologist some scientific data of areas where you struggle, rather than blindly walking into his office and saying "I can't hear".

My research revealed that HAs in general will help you hear up to 20 ft in a quiet setting, but that goes down to 5ft - 6ft in a noisy environment. The #1 complaint of HA users is, can't hear in noisy environments.

As powerful as Phonak Lumitys are I still struggle in the following area:

Health club fitness floor where the background is 80db and I can't converse with someone who is on the next achine only 6 ft away.

Retail store - Difficulty hearing the checkout clerk or the register promps from the self checkout kiosk.

Restaurant - Conversations to the side and back confuse my HAs and make it difficult to converse with someone at my table. Recently I had lunch with my mother in a restaurant. It was mid-afternoon so the restaurant was not crowded but background was 74db and I had a hard time pick up her voice. I asked her if she thought the restaurant was loud and she said no. As a member of the hearing loss community, everything sounds loud to me - making it difficult to pick up speech.

Grocery store - 75db background - Hard to hear the butcher at the meat counter or the clerk at the deli counter.

Recently I had to attend a visitation for a relative that passed. The parlor was 80 db background and i had a difficult time conversing with family members. I had to stand next to them to hear.

Yes the Phonak Lumity 90s boasts having Dynamic Noise Cancellation (DNC), which activates automatically in Speech in Noise program (SPiN) and Speech in Loud Noise program (SPiLN). The user is supposed to be able to adjust the strength of DNC while in SPiN or SPiLN by adjusting the SPEECH FOCUS slider in My Phonak App. I've adjusted this as well as NOISE REDUCTION without great results. I am a user of Phonak Target, the fitting software used by audiologists so I'm able to further adjust my HAs than the normal user can with My Phonak app. This is a work in progress, still trying to create the perfect recipe.

Please keep in mind, everyone reacts differently to HAs. Even if two patients have IDENTICAL audiogram prescription, they will receive hearing differently to identically programmed HAs.

What has helped in extreme conditions is using a Roger On microphone. This device has more powerful noise suppresion that is not in the hearing aid. The microphne can be operated in 360 degree listening mode or narrow focus. I tried it in narrow focus in a Walmart and was able to hear a mother and children talking 10 ft away. These devices are not cheap however you can find pre-owned ones on eBay.

I hope you will find some of this useful.