RE: The Doppler Effect......
May 1, 2021 at 11:17 pm
(This post was last modified: May 2, 2021 at 12:13 am by Brian37.)
Ok, how about this, lets take all things as an example being equal in distance from the time the vehicle off in the distance approaches, when you first notice it, then at your most aware perception, when it is passing you, what is the difference between the time you notice it, to the time it gets equal distance after it passes you?
Without the formulas, it seems to me, that the further away and object is, the longer the soundwaves are between peaks, but the closer they get to the observer, the more frequent and bunched up they are percieved by the observer, but after they pass the observer, the more spread out the waves become, thus giving the observer the same perception of more being lower volume as when they were off in the distance when they first aproached you?
Ok, so
Ok so when we talk about "stretched" vs "compressed" the "streched" point of view(observation)is when the light/sound is further away, and the "compressed" point of view(observation) is when two objects are closer together?
Could one compare this "doppler" when talking about sound or light waves, being like the difference between a streched Slinky toy verses a compressed slinky toy? And the "pitch" in a stretched Slinky is the sound/light being further away, and the "compressed" Slinkey" being the closer or next to proximity to the observer?
Ok another question. All things considered side by side. I know it is possible for a guitar solo to be as knife peircing as Norman Bates stabbing the woman in the hotel shower (and yes, I know that was violins). But I also know that the "BUMB BUMB BUMP Anotherone bites the dust" can be just as loud.
I can only assume the "Amplitude" applies to both "pitches"? Is this why I know about both "woofers and tweeters" in regards to old school home and car stereos?
I know tweeters projected the high peircing notes, and the woofers put out the low notes, like base guitars and base drums.
Without the formulas, it seems to me, that the further away and object is, the longer the soundwaves are between peaks, but the closer they get to the observer, the more frequent and bunched up they are percieved by the observer, but after they pass the observer, the more spread out the waves become, thus giving the observer the same perception of more being lower volume as when they were off in the distance when they first aproached you?
(May 1, 2021 at 11:14 pm)Jackalope Wrote:(May 1, 2021 at 11:09 pm)Brian37 Wrote: Ok, without making my head explode, what is the difference between volume and pitch?
Because no matter my motion, standing still, or being in motion myself, I do know somthing off in the distance I am not going to percieve as being as loud as something right next to me. And as well, after it passes me and moves off in the distance it I will not percieve it as loud as if both of us were stationary right next to each other.
Yes, all if that is true, but none of it describes the Doppler effect.
The Doppler effect describes how the wavelength of a sound (or light) emitted by a source is stretched or compressed as it either recedes from or approaches toward you. Lower wavelength sound = lower pitch. Thing about a guitar's strings. The larger strings create sounds lower in pitch because they vibrate at a lower frequency.
Ok, so
(May 1, 2021 at 11:17 pm)Brian37 Wrote: Ok, how about this, lets take all things as an example being equal in distance from the time the vehicle off in the distance approaches, when you first notice it, then at your most aware perception, when it is passing you, what is the difference between the time you notice it, to the time it gets equal distance after it passes you?
Without the formulas, it seems to me, that the further away and object is, the longer the soundwaves are between peaks, but the closer they get to the observer, the more frequent and bunched up they are percieved by the observer, but after they pass the observer, the more spread out the waves become, thus giving the observer the same perception of more being lower volume as when they were off in the distance when they first aproached you?
(May 1, 2021 at 11:14 pm)Jackalope Wrote: Yes, all if that is true, but none of it describes the Doppler effect.
The Doppler effect describes how the wavelength of a sound (or light) emitted by a source is stretched or compressed as it either recedes from or approaches toward you. Lower wavelength sound = lower pitch. Thing about a guitar's strings. The larger strings create sounds lower in pitch because they vibrate at a lower frequency.
Ok, so
Ok so when we talk about "stretched" vs "compressed" the "streched" point of view(observation)is when the light/sound is further away, and the "compressed" point of view(observation) is when two objects are closer together?
Could one compare this "doppler" when talking about sound or light waves, being like the difference between a streched Slinky toy verses a compressed slinky toy? And the "pitch" in a stretched Slinky is the sound/light being further away, and the "compressed" Slinkey" being the closer or next to proximity to the observer?
Ok another question. All things considered side by side. I know it is possible for a guitar solo to be as knife peircing as Norman Bates stabbing the woman in the hotel shower (and yes, I know that was violins). But I also know that the "BUMB BUMB BUMP Anotherone bites the dust" can be just as loud.
I can only assume the "Amplitude" applies to both "pitches"? Is this why I know about both "woofers and tweeters" in regards to old school home and car stereos?
I know tweeters projected the high peircing notes, and the woofers put out the low notes, like base guitars and base drums.
