Can you sense ultrasound or RF?

[Overclocked]

You are right and I also know about this bias. Emotionally I'm more comfortable with my own lies. I think I'm a typical man, I like to feel that "I did it my way".

We all are. Confronted with the truth some people get hostile or defensive. Some people can accept the fact they were wrong and have new information, kind of like how people originally thought the earth was the center of it all. We are only human and it gets better. Progress still marches on unimpeded .

You have answered the question yourself.
I don't have the talent to tell between good scientist to a bad one. Most times I look at their photo and if they look honest I believe them. If she is good looking scientist I believe every word she say. I also know that the honest man in the photo isn't the scientist, he is a manager paid to quote the modified report. I fall for it anyway.
I worked for several firms, whenever we had an unhappy customer I lied to him without feeling guilty because I was loyal to the firm.
I think people on this forum are telling the truth all the time because nobody pays them.
It's a catch 22.

It is hard to figure out at times. I think there is also a name for this bias as well, if people "look" good we are more biased to believe them. Case and Point: Jenny Mccarthy. Bunch of wackos believe (because of her) that vaccines cause autism. They dont, but she is a good looking person (Also former Porn Star or Playboy bunny). She wasn't paid though.

There's also a whole bunch of other biases. Its like Alice in wonderland. You jump in the rabbit hole only to find out more than you ever wanted to know.

EDIT: Can we please fix the email notifications? Im not getting any .

 

[JoeJester]

I don't have the talent to tell between good scientist to a bad one.

You need to develope your inner

 

[audioguru]

In my teens and early twenties I clearly heard "ultrasonic" transmissions from burglar alarms. Since "nobody can hear it" they were turned on all the time. It was loud but didn't bother me because it was something like pressure on my ears, not sound. Of course I could hear the lower frequency of a TV's 15kHz H oscillator but it was not too loud because of the distance.
Like music? No, I love music. In my teens I studied music and I almost accomplished having "perfect pitch" where hearing is accurate to frequencies like a frequency counter. I heard all the subtle differences between the instruments in an orchestra so I listened to live and recordings of all classical music ever produced until I heard them all so many times that I began listening to different types of music and singing. I rarely listen to AM radio because it sounds bad but I like listening to FM radio stations playing the latest music (not RAP).

One of my dogs learned the music at the beginning of a TV dog food commercial and gets excited when the commercial begins. I identify the image of a singer before a song begins, especially if she is pretty then I REALLY get excited.

Today I am 69 years old, still love music and can still hear frequencies pretty high but not ultrasonic frequencies anymore. I think I have tinnitus because I hear very high pitched background noise all the time. But I take a small Asprin every day to keep my arteries working and high doses are said to cause tinnitus. I think tinnitus is caused by the high frequency nerves are not damped by damaged high frequency transducers (hairs inside the cochlea?) anymore. I read today that when your doctor can also hear your tinnitus then you have a serious medical problem with blood flow (like a faucet that squeals).

Ear doctors measure only as high as 8kHz to make sure your hearing aid works with voices, not with music.
If you hear more noise when one ear is blocked then that is normal. I think we have two ears and hear in stereo not as a backup in case one ear is chopped off, but stereo allows your brain to cancel noises that are usually in mono (the same sound or noise in both ears). Echoes are horrible in mono but are easily cancelled in stereo, try it.

 

[Rich D.]

Our dogs used to get fed at exactly 6pm. At that time, the local news show starts on TV and they got used to the opening theme song just before getting fed. Now when they hear that song they get excited. Funny how they are able to distinguish different kinds of music.

I play music too, but always seemed to have a difficult time identifying the bass notes. One day at the lab I was listening to an audio circuit with a low frequency signal to listen for distortion artifacts. I removed the headphones when interrupted and when I put them on again the sound was in the wrong ear. I swapped the sides and noticed that the pitch seemed to be exactly one semitone higher. Huh????

Over the next hour or so, I tried a lot of different frequencies in either ear and discovered that ONLY in the range of maybe 150 to 250 Hz, a pitch in the right ear and my left ear seems to be about one semitone apart. All other frequency ranges seem consistent from ear to ear. I mean I literally hear a note in my left ear, then move the speaker over to my right ear, and it really sounds like a different note is being played!

I think I discovered something really unusual here. I think that may account for my difficulty in determining pitch of bass notes. Never heard or read of such an effect before or since.

 

[JoeJester]

I never thought about the common mode rejection of the human brain .....

 

[moty22]

If you hear more noise when one ear is blocked then that is normal. I think we have two ears and hear in stereo not as a backup in case one ear is chopped off, but stereo allows your brain to cancel noises that are usually in mono (the same sound or noise in both ears). Echoes are horrible in mono but are easily cancelled in stereo, try it.

Our dogs used to get fed at exactly 6pm. At that time, the local news show starts on TV and they got used to the opening theme song just before getting fed. Now when they hear that song they get excited. Funny how they are able to distinguish different kinds of music.

I play music too, but always seemed to have a difficult time identifying the bass notes. One day at the lab I was listening to an audio circuit with a low frequency signal to listen for distortion artifacts. I removed the headphones when interrupted and when I put them on again the sound was in the wrong ear. I swapped the sides and noticed that the pitch seemed to be exactly one semitone higher. Huh????

Over the next hour or so, I tried a lot of different frequencies in either ear and discovered that ONLY in the range of maybe 150 to 250 Hz, a pitch in the right ear and my left ear seems to be about one semitone apart. All other frequency ranges seem consistent from ear to ear. I mean I literally hear a note in my left ear, then move the speaker over to my right ear, and it really sounds like a different note is being played!

I think I discovered something really unusual here. I think that may account for my difficulty in determining pitch of bass notes. Never heard or read of such an effect before or since.

If you add what you say to what audioguru said about stereo and noise it will be easy for you to understand why some people are very disturbed by low frequencies sound.

 

[KeepItSimpleStupid]

When music went digital, I seemed to have lost interest in music and even the ATSC DTV. My nice 1970's stereo has been in disrepair for a while.
By nice, I mean a 0-100 kHz in the pre-amp stages and 0.5 Khz - 40 Hz for the output with both multipath processors (Carver) and a dynamic range processor with derivative processing (speeds up rise time) by a dbx 4bx. A 12 band EQ also with a response out to 100 Khz.

The amp has been compared with a Mcintosh tube amp running to Voice of the theater speakers with horns. The low wattage tube amp could really drive the horns louder than my 100 W amp could. Bass was much better with the solid state amp. The sound was comparable except for those differences. My friend likes classical music and I like high rise time stuff (Dome tweeter material) e.g. Hammer dulcimer or Folk music.

 

[moty22]

Today I am 69 years old, still love music and can still hear frequencies pretty high but not ultrasonic frequencies anymore. I think I have tinnitus because I hear very high pitched background noise all the time. But I take a small Asprin every day to keep my arteries working and high doses are said to cause tinnitus. I think tinnitus is caused by the high frequency nerves are not damped by damaged high frequency transducers (hairs inside the cochlea?) anymore. I read today that when your doctor can also hear your tinnitus then you have a serious medical problem with blood flow (like a faucet that squeals).

Your story supports my theory that people with good hearing are more likely to get tinnitus.
I accept your explanation for the cause of your tinnitus. Do you accept the possibility that it could also be that good hearing comes together in the same package with tinnitus?
Does your computer aggravates you symptoms?

 

[moty22]

When music went digital, I seemed to have lost interest in music and even the ATSC DTV. My nice 1970's stereo has been in disrepair for a while.
By nice, I mean a 0-100 kHz in the pre-amp stages and 0.5 Khz - 40 Hz for the output with both multipath processors (Carver) and a dynamic range processor with derivative processing (speeds up rise time) by a dbx 4bx. A 12 band EQ also with a response out to 100 Khz.

The amp has been compared with a Mcintosh tube amp running to Voice of the theater speakers with horns. The low wattage tube amp could really drive the horns louder than my 100 W amp could. Bass was much better with the solid state amp. The sound was comparable except for those differences. My friend likes classical music and I like high rise time stuff (Dome tweeter material) e.g. Hammer dulcimer or Folk music.

Could it be because you are listening to MP3?

 

[KeepItSimpleStupid]

Yep, I suppose so. ATSC is MP4 sound. So, even the FM stations are probably playing MP3's.

 

[moty22]

You need to develope your inner

I've tried your meter but the readings don't look right.

 

[moty22]

Yep, I suppose so. ATSC is MP4 sound. So, even the FM stations are probably playing MP3's.

If you have music that you know well on a CD compress it to MP4 and try the difference. Some say that compression kill the music.

 

[audioguru]

I played fairly loud music all my life that might have damaged my hearing and produced tinnitus. But my age also might have produced the tinnitus even if I did not damage my hearing.
I do not "hear" my pc or CRT TV.

I worked with Altec sound equipment. Their huge Voice Of The Theater speakers were designed to be as loud as possible to fill a theater with plenty of sound from a low power tube amplifier. They were ported "boom boxes" that resonated one-note-bass and the high output impedance of tube amplifiers did not damp the resonance. The horn mid-tweeters shrieked awful peaky and distorted sounds.
I like modern smaller speakers designed for good wideband sound not high volume from low power amps. I also like the very flat frequency response and low distortion from dome tweeters.

 

[audioguru]

I have never seen an overloaded ******** meter before. It probably stinks.
I HATE audio compression. Live music is real, not compressed and it still can be heard clearly. If audio plays too loud then simply turn it down, don't compress it down. Oh, the sound man doesn't work here anymore?

 

[moty22]

I played fairly loud music all my life that might have damaged my hearing and produced tinnitus. But my age also might have produced the tinnitus even if I did not damage my hearing.
I do not "hear" my pc or CRT TV.

I worked with Altec sound equipment. Their huge Voice Of The Theater speakers were designed to be as loud as possible to fill a theater with plenty of sound from a low power tube amplifier. They were ported "boom boxes" that resonated one-note-bass and the high output impedance of tube amplifiers did not damp the resonance. The horn mid-tweeters shrieked awful peaky and distorted sounds.
I like modern smaller speakers designed for good wideband sound not high volume from low power amps. I also like the very flat frequency response and low distortion from dome tweeters.

Thank you for the reply.
If the cause was your big speakers then it should be easy to tell; all your neighbors must suffer from tinnitus. The common claim by scientists is that the cause likely to be loud noise.

 

[KeepItSimpleStupid]

Tinnitus causes: https://www.mayoclinic.org/diseases-conditions/tinnitus/basics/causes/con-20021487

 

[audioguru]

Most deaf people I know played with guns. When I was young I played with small bombs and rockets that also blew up but never with guns. I never held a small bomb or rocket in my hands close to my ears, like people hold a gun.
I protect my hearing. I cover my ears when a kid's car or truck also with no muffler drives past me.

My home is made of bricks and mortar, not rice paper so my neighbours do not hear what I am playing.

My tinnitus is at very high frequencies, maybe ultrasonic, because I cannot identify their pitch like I can with lower frequencies. If I hear 2kHz then I know what one octave higher at 4kHz sounds like. If I hear 4kHz then I know that 8kHz sounds one octave higher. I think I can hear that 16kHz sounds one octave higher than 8kHz. But I do not think I was ever able to hear that 20kHz sounds one octave higher than 10kHz because I could not identify the pitch of frequencies as high as 20kHz and higher.

I had my hearing tested one time and my response at exactly 1kHz is a little low. I used 1kHz many times to listen for distortion on sound systems.

 

[tcmtech]

40 years old here and never protected my hearing to any degree. Mostly abused it to be honest and as of my last hearing test last year I am still scoring at of above the typical ranges most people half my age.

I can still hear frequencies to ~17.5 KHz as of my last test and have sensitivity well above what is considered normal for my age.

 

[audioguru]

I am macho and you are probably also macho but didn't you know that girls hear high frequencies better than guys?

 

[tcmtech]

Yes I did. In high school I had a GF that could hear frequencies to at least 22 - 23 KHz when we hooked a speaker up to a signal generator one time. I think I was good to about 19 KHz back then so I have not had much of a upper end loss in nearly 25 years of abusing my ears.