parvin

general recent conversations

$Mathematics$ Mathematics

Associated with Math.SE; for both general discussion & math qu...

parvin

Mar 26, 2023 21:56

true...

parvin

Mar 26, 2023 21:51

and some others.

parvin

Mar 26, 2023 21:51

for instance 3.5 = Cos(a)
32.5 = Sin(a)

parvin

Mar 26, 2023 21:50

I'm trying to find a way to find x in Cos(x) for a number of coordinates.

parvin

Mar 26, 2023 21:49

T_T
How is one supposed to solve these stuff then...

parvin

Mar 26, 2023 21:48

the thing is,
for example
cos (12.86) = 0.95719
but arccos (0.95719) is not 12.86 !

parvin

Mar 26, 2023 21:48

oh my god... infinite?

parvin

Mar 26, 2023 21:47

I mean google is not helping me at all! I did look up. and the last time I was studying these was like 10 years ago. long time for remembering anything!

parvin

Mar 26, 2023 21:46

Cos(x)= y then how am I supposed to reverse it at find x?!

parvin

Mar 26, 2023 21:40

Hello. How can I find the x in Cos(x)=12 with an online calculator?!

The h Bar

General chat for Physics SE (physics.stackexchange.com). For M...

parvin

Mar 25, 2023 02:25

Also, in adding the sine waves, if the speakers are in front of eachother, should we substract or add?

parvin

Mar 25, 2023 02:16

Hey! I got a question,
If we add two white noise together would the result amplitude or sound pressure level of the sum be different than when we add sine waves of the same amp and SPL?

parvin

Mar 24, 2023 20:14

Thank you!

parvin

Mar 24, 2023 20:11

@Amit On the PDF I have, the information consists of a "SPL at the membrane of speaker" and also "Virtual point Distance". Does this mean that the SPL at the membrane is measured at Virtual point distance?

parvin

Mar 24, 2023 20:03

@amit I already know the sound pressure the speaker is producing, but I wanna see, in the distance the listener has to the speaker, how the spl changes, how would it be at the listening position.

parvin

Mar 24, 2023 20:02

finding spl at the listening position, not the source

parvin

Mar 24, 2023 19:46

well yeah this is when you have a listener in the middle and two speakers and you want to calculate spl for the second spekaer

parvin

Mar 24, 2023 19:42

cause it would give me 0 or infinity ! which is nonsense in rl.

parvin

Mar 24, 2023 19:42

and the distances are like r1/r2 so I cannot use 0 in this equation

parvin

Mar 24, 2023 19:41

The point is that I wanna find the SPL at the source

parvin

Mar 24, 2023 19:37

@Amit Thanks! already saw this one but it's not saying how SPL changes from one source to one listener. does it?

parvin

Mar 24, 2023 19:32

Hello. I need to know how to calculate SPL change from a sound source to the listening position at a distance.
Please help me find this out it's so important and urgent! thank you.

Electrical Engineering

A place to talk with friends from the EE community about vacuu...

parvin

Mar 25, 2023 02:17

I got a question,
If we add two white noise together would the result amplitude or sound pressure level of the sum be different than when we add sine waves of the same amp and SPL?

parvin

Mar 25, 2023 02:17

hey

parvin

Mar 24, 2023 19:10

Please help me find this out it's so important and urgent! thank you.

parvin

Mar 24, 2023 19:10

Hello. I need to know how to calculate SPL change from a sound source to the listening position at a distance.

parvin

Apr 29, 2020 16:20

@ThePhoton so does it show the peak voltage and current? how would I know how the waveform is like without oscilliscope?

parvin

Apr 29, 2020 14:51

Hello
I want to know why multimeter doesn't show voltage and current changing in an alternating current, and only shows a steady number ?

parvin

Feb 7, 2020 17:30

Hi everyone.
Considering voltage constant, is the usage of power at houses measured with usage of current? (number of electrons entered the electrical devices)

Discussion between Newbie and Tim Wil…

Imported from a comment discussion on electronics.stackexchang...

parvin

Mar 24, 2023 19:13

Hello. I need to know how to calculate SPL change from a sound source to the listening position at a distance.
Please help me find this out it's so important and urgent! thank you.

The Practice Room

General discussion for music.stackexchange.com

parvin

Nov 7, 2021 21:48

Q: Why does major 2nd have more harmonics than major 3rd?

I was watching this video about Just-intonation tuning system. In this video he is explaining how the harmonics work. He is explaining that the first harmonic is created by dividing a string into half, which has the lowest frequency. Then by dividing more, we will get higher frequencies. He is al...

Winter Bash 2020

discussion & mask/hat hunting

parvin

Dec 17, 2020 15:02

I will sure @CinCout

parvin

Dec 17, 2020 15:00

thank you !

parvin

Dec 17, 2020 14:58

okay I guess I can ask lol
I'm looking for a word indicating interest in Carpentry and making mechanical toys
I'm gonna add it to my C.V

parvin

Dec 17, 2020 14:58

@Shadow10YearsWizard cuz people are online in here!!

parvin

Dec 17, 2020 14:55

I'm looking for a word to express a particular interest so I can add it to my C.V

parvin

Dec 17, 2020 14:54

oh no it's not realated to here that's why I'm asking if it's okay to ask

parvin

Dec 17, 2020 14:53

im looking for a word and im so in a rush so may I ask it in here?

parvin

Dec 17, 2020 14:52

hey any english native in here?

Language Overflow

This is the main chat room for ell.stackexchange.com. Welcome!

parvin

Dec 17, 2020 14:41

Q: Name of a job for working in a workshop

I am looking for a word indicating that I am interested in working in a workshop, meaning working with machines, wood carpentry, metal carpentry, even making automatons, and making stuff with hands. I am going to add this to the interests part of my C.V.

word-request

parvin

Jun 24, 2020 15:25

I have a question and I need a quick answer please!

parvin

Jun 24, 2020 15:24

hello, anybody online?

English Language & Usage: Multi-Layer…

Not for the faint of heart or those easily triggered by Englis...

parvin

Dec 16, 2020 12:30

Thanks

parvin

Dec 16, 2020 12:24

This certificate is presented to Ms. Y on April 25, 2019,
as a member of the first-place team in the Firefighter Robot section of the fourth robotics competition of the X univeristy

parvin

Dec 16, 2020 12:24

Or maybe this one

parvin

Dec 16, 2020 12:21

is there any way I can make it correct?!

parvin

Dec 16, 2020 12:21

"This certificate is presented to Ms. Y on April 25, 2019,
Winning the first place team in the Firefighter Robot section of the fourth robotics competition of X University"

parvin

Dec 16, 2020 12:20

I have this sentens and i'm sure it's incorrect!

parvin

Dec 16, 2020 12:20

The Screening Room

“We are all the pieces of what we remember. We hold in ourselv...

parvin

Jun 2, 2020 12:48

hi
im looking for the name of a movie about an american guy who goes to paris to forget his girlfriend and then meets a whore, and after losing all his money he moves in with her and lives with her for a while, bribes her clients to make more money and cheats her with another french girl. that's what I remember about it. does anyone know the name? and it's a recent movie it's not an old one.