I am retired and have a hearing issue.
I found that if I do Valsalva (pressurize ears) my hearing improves considerably especially toward higher frequencies. I tested my hearing with an online tone generator adjusted so that 1000Hz is moderately loud. My hearing response normally goes only to about 4600Hz. If I do Valsalva I can then hear out to 7000 Hz and barely detect 7300Hz. I have asked the Dr and looked for details on Valsalva and hearing improvement, but did not find much. The inner ear is near the Carotid Artery, the Jugular Vein and the jaw hinge, why is Valsalva changing my hearing?
Warning - Valsalva causes stresses that may be harmful, so don't do Valsalva without understanding the issues.
Downloaded a great audio spectrum analyzer for my phone, free from Google Play, Specrtoid. Free.
My hearing is badly bothered when background music on TV interferes with speech. The spectrum analyzer shows why. My current speculation is that perhaps I am missing hearing certain octaves of voices on TV and that the background music is overwhelming some of the voice octaves that I can hear.
After years of not understanding my hearing and sound, these two simple instruments finally showed me a great deal of relevant information in about a week!
I just purchased a low cost oscilloscope and am very impressed by what it can do.
I'd like to learn more about my hearing and sounds. In addition, I would like to demonstrate sound, voice and musical instruments to my grandchildren. I just learned what octaves are and would like to show them.
In addition, I have a background in light research and would like sensors for the new oscilloscope. In addition, I don't understand using my computer as an oscilloscope and whether that should be an option for viewing sensors.
Any suggestions for the simplest low cost, flat, microphone type that would work with the oscilloscope. I want to show sound waveforms. If you think the computer approach is a good option as well, please mention.
Any suggestions
1) light sensor
2) video camera with manual control of gain
3) pressure sensor for measuring the pressure between the chest and upper arm
4) other sensors for educational purposes
Goal is to get started with low cost sensors that demonstrate waveforms in a reasonably representative and informative way.
I found that if I do Valsalva (pressurize ears) my hearing improves considerably especially toward higher frequencies. I tested my hearing with an online tone generator adjusted so that 1000Hz is moderately loud. My hearing response normally goes only to about 4600Hz. If I do Valsalva I can then hear out to 7000 Hz and barely detect 7300Hz. I have asked the Dr and looked for details on Valsalva and hearing improvement, but did not find much. The inner ear is near the Carotid Artery, the Jugular Vein and the jaw hinge, why is Valsalva changing my hearing?
Warning - Valsalva causes stresses that may be harmful, so don't do Valsalva without understanding the issues.
Downloaded a great audio spectrum analyzer for my phone, free from Google Play, Specrtoid. Free.
My hearing is badly bothered when background music on TV interferes with speech. The spectrum analyzer shows why. My current speculation is that perhaps I am missing hearing certain octaves of voices on TV and that the background music is overwhelming some of the voice octaves that I can hear.
After years of not understanding my hearing and sound, these two simple instruments finally showed me a great deal of relevant information in about a week!
I just purchased a low cost oscilloscope and am very impressed by what it can do.
I'd like to learn more about my hearing and sounds. In addition, I would like to demonstrate sound, voice and musical instruments to my grandchildren. I just learned what octaves are and would like to show them.
In addition, I have a background in light research and would like sensors for the new oscilloscope. In addition, I don't understand using my computer as an oscilloscope and whether that should be an option for viewing sensors.
Any suggestions for the simplest low cost, flat, microphone type that would work with the oscilloscope. I want to show sound waveforms. If you think the computer approach is a good option as well, please mention.
Any suggestions
1) light sensor
2) video camera with manual control of gain
3) pressure sensor for measuring the pressure between the chest and upper arm
4) other sensors for educational purposes
Goal is to get started with low cost sensors that demonstrate waveforms in a reasonably representative and informative way.
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