I will post links showing that the energy of sounds/speech is equally, if not more important. I now understand how my dad understands so much speech. Experments have been done on people with a similar high frequency loss as my dad and they score similar to what my dad does.
One experiment used a lowpass filter and speech scores decreased less than 5% all the way down to 1000Hz then there was a big drop at 750Hz and another big drop at 500Hz. The subjects were fully hearing and could understand speech fine(way, way better than CI) as long as they can hear to 1000Hz.
Another experiment showed that having normal hearing at just the low frequencies with no hearing above 1000Hz was better than a severe hearing loss across the audiogram. That's because with a severe loss, you are getting some distortion for all speech sounds. With normal hearing to 1000Hz and no hearing above, you are getting excellent clarity of speech sounds to 1000Hz. It is easier to fill in the blanks on the consonants you don't hear than it's to try to guess what word you are hearing when it sounds almost like gibberish or when several words sound the same. I will post more about this in the speech thread.
You can see that speech scores stay high till you drop down to 500Hz. My speech is low because I don't have enough residual hearing above 500Hz and I don't have normal hearing at any frequency, even at 250Hz my HL is 70db. If stem cells got my hearing to around 15db at 500Hz but didn't improve my hearing at all above 500Hz, my speech scores would shoot up like a rocket! I know people who have normal or near normal hearing up to 500Hz and severe-profound hearing at 750Hz or 1000Hz and up who can understand a high percentage of speech and use phones as well as those with CI can.
Also, I will need a very good reason for a refusal to get me to 0db if it's possible to begin with. It's like not correcting someone to 20/20 with glasses unless there's a very good reason. I talked to someone with the 2nd best CI result that ive seen and she's at 0db in one frequency and at 5db in a few other frequencies. She says her audiologist programmed her CI according to how much she choose to hear. This also caused her to understand speech better than the vast majority of those with CI. I do want to note that for most people, it's not even possible to get to 5db. They are able to get to around 30db and if their CI is programmed for more, they still hear at 30db. I will do the same when getting my HAs programmed as I choose to hear the best possible. How well I hear with HAs has to do with how much residual hearing I have after stem cells plus the 70db gain my HAs can dish out.
One experiment used a lowpass filter and speech scores decreased less than 5% all the way down to 1000Hz then there was a big drop at 750Hz and another big drop at 500Hz. The subjects were fully hearing and could understand speech fine(way, way better than CI) as long as they can hear to 1000Hz.
Another experiment showed that having normal hearing at just the low frequencies with no hearing above 1000Hz was better than a severe hearing loss across the audiogram. That's because with a severe loss, you are getting some distortion for all speech sounds. With normal hearing to 1000Hz and no hearing above, you are getting excellent clarity of speech sounds to 1000Hz. It is easier to fill in the blanks on the consonants you don't hear than it's to try to guess what word you are hearing when it sounds almost like gibberish or when several words sound the same. I will post more about this in the speech thread.
You can see that speech scores stay high till you drop down to 500Hz. My speech is low because I don't have enough residual hearing above 500Hz and I don't have normal hearing at any frequency, even at 250Hz my HL is 70db. If stem cells got my hearing to around 15db at 500Hz but didn't improve my hearing at all above 500Hz, my speech scores would shoot up like a rocket! I know people who have normal or near normal hearing up to 500Hz and severe-profound hearing at 750Hz or 1000Hz and up who can understand a high percentage of speech and use phones as well as those with CI can.
Also, I will need a very good reason for a refusal to get me to 0db if it's possible to begin with. It's like not correcting someone to 20/20 with glasses unless there's a very good reason. I talked to someone with the 2nd best CI result that ive seen and she's at 0db in one frequency and at 5db in a few other frequencies. She says her audiologist programmed her CI according to how much she choose to hear. This also caused her to understand speech better than the vast majority of those with CI. I do want to note that for most people, it's not even possible to get to 5db. They are able to get to around 30db and if their CI is programmed for more, they still hear at 30db. I will do the same when getting my HAs programmed as I choose to hear the best possible. How well I hear with HAs has to do with how much residual hearing I have after stem cells plus the 70db gain my HAs can dish out.