In telecommunication, the term noise power has the following meanings: 1. * The measured total noise in a given bandwidth at the input or output of a device when the signal is not present; the integral of noise spectral density over the bandwidth 2. * The power generated by a random electromagnetic process. 3. * Interfering and unwanted power in an electrical device or system. 4. * In the acceptance testing of radio transmitters, the supplied to the antenna transmission line by a radio transmitter when loaded with noise having a Gaussian amplitude-vs.-frequency distribution. (Wikipedia).
What is Sound? - Quickly Discover What Sound Really Is
What is Sound? This simple demonstration visually shows how sound waves are produced from a vibrating surface. A frequency generator is hooked up to a power amplifier, and the resultant signal is used to drive a loudspeaker. The signal is also sent to an oscilloscope. After listen
From playlist Physics Demonstrations
In this video i demonstrate sound waves interference and standing waves from loudspeaker used sound sensor. The frequency on loudspeaker is about 5500Hz. Enjoy!!!
From playlist WAVES
Sound vs. Noise: What’s the Actual Difference? (Part 1 of 3)
Noise and sound are not the same thing… really, they aren’t! What exactly is noise? Part 2 of 3 - https://youtu.be/XhFhK97hrdY Part 3 of 3 - https://youtu.be/yTyYZFcxGGQ Read More: Signal-to-Noise Ratio and Why It Matters https://www.lifewire.com/signal-to-noise-ratio-3134701 “You
From playlist Seeker Plus
Show Me Some Science! Speed Of Sound
Sound is a wave which travels through the air at about 330 m/s. The Little Shop of Physics Crew dances to the music together. When spread out along the track, it takes about a third of a second for the sound to travel from the first person to the last. The crew is blindfolded, so there are
From playlist Show Me Some Science!
A demonstration of an active noise reduction technique. We review passive noise management and go on to demonstrate phase-related active noise reduction.
From playlist Sound
From playlist 126: PHYS 126 Week 1
How electrostatic speakers work
Here's how electrostatic speakers work. Unless your an audiophile, you've probably never heard of the electrostatic loudspeaker. Electrostatic loudspeakers are pretty hip in the audiophile World because they exhibit levels of distortion one to two orders of magnitude lower than conventi
From playlist Physics Demonstrations
Physics - Mechanics: Sound and Sound Waves (7 of 47) Sound Intensity
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain the basics of the intensity of sound (speaking, whisper, and screaming!).
From playlist MOST POPULAR VIDEOS
MagLab User Summer School: The Physics of Noise and Musings of Experimental Errors
This video was recorded in 2016 at the National MagLab’s annual User Summer School, where early-career scientists learn from lab experts best practices for conducting experiments at the lab. For more information, please visit https://nationalmaglab.org/user-summer-school
From playlist User Summer School Talks
EEVblog #1118 - Why Are Studio Monitors Noisy?
Why do many powered studio monitor speakers have a low level audible background noise? This is an issue with many big and popular brand monitors like KRK, Yamaha, JBL, Alesis and many others, even top end brands like Focal. Time for some investigation on the KRK Rokit 6 studio monitor spe
From playlist Audio & Speakers
EEVblog #594 - How To Measure Power Supply Ripple & Noise
Fundamentals Friday Dave explains what the ripple and noise specifications on a power supply is and how to measure it using different methods on both analog and digital oscilloscopes. From bad techniques through to good, showing the effect of each one. Traps for young players aplenty in th
From playlist Fundamentals Friday
Peter R Saulson - Shot noise and Radiation Pressure noise (Classic view /Poisson fluctuations)
PROGRAM: ICTS Winter School on Experimental Gravitational-Wave Physics DATES: Monday 23 Dec, 2013 - Saturday 28 Dec, 2013 VENUE: Raja Ramanna Centre for Advanced Technology, Indore PROGRAM LINK: http://www.icts.res.in/program/GWS2013 A worldwide network of detectors are currently involved
From playlist ICTS Winter School on Experimental Gravitational-Wave Physics
Measuring supermassive black hole mergers with LISA (Lecture 2) by Antoine Klein
DISCUSSION MEETING ASTROPHYSICS OF SUPERMASSIVE BLACK HOLES ORGANIZERS: Parameswaran Ajith, K. G. Arun, Suchetana Chatterjee and Bala R. Iyer DATE: 17 December 2019 to 19 December 2019 VENUE: Madhava Lecture Hall, ICTS, Bangalore There is overwhelming evidence for the existence of sup
From playlist Astrophysics of Supermassive Black Holes 2019
MIT 6.02 Introduction to EECS II: Digital Communication Systems, Fall 2012 View the complete course: http://ocw.mit.edu/6-02F12 Instructor: George Verghese This lecture introduces a noise model based on a Gaussian random variable. Background on calculating mean and variance of probability
From playlist MIT 6.02 Introduction to EECS II: Digital Communication Systems, Fall 2012
EEVblog #528 - Opamp Input Noise Voltage Tutorial
Dave explains one of the most confusing parameters in an opamp datasheet, Input Noise Voltage Density, that mysterious nV/RootHz figure. Along with different types of opamp noise, corner noise frequency, and how to calculate output noise spectral density. And how to use a Dynamic Signal An
From playlist Opamps - Tutorials & Practicals
EEVblog #1128 - Studio Monitor Speaker Noise - Part 2
Follow-up to the Studio Monitor Noise video, replacing the mains power supply with a battery supply. Does the noise floor go away? Part 1: https://www.youtube.com/watch?v=_k5MrB99lpU Forum: http://www.eevblog.com/forum/blog/eevblog-1127-studio-monitor-speaker-noise-part-2/ EEVblog Main
From playlist Audio & Speakers
Fourier Transforms: Discrete Fourier Transform, Part 3
Data Science for Biologists Fourier Transforms: Discrete Fourier Transform Part 3 Course Website: data4bio.com Instructors: Nathan Kutz: faculty.washington.edu/kutz Bing Brunton: faculty.washington.edu/bbrunton Steve Brunton: faculty.washington.edu/sbrunton
From playlist Fourier
Oliver Puncken - Stabilization of the PSL
PROGRAM: ICTS Winter School on Experimental Gravitational-Wave Physics DATES: Monday 23 Dec, 2013 - Saturday 28 Dec, 2013 VENUE: Raja Ramanna Centre for Advanced Technology, Indore PROGRAM LINK: http://www.icts.res.in/program/GWS2013 A worldwide network of detectors are currently involved
From playlist ICTS Winter School on Experimental Gravitational-Wave Physics