Signal Processing Articles

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A

A Different Way Of Averaging - Time Synchronous Averaging

A Simple Frequency Response Function

A, B & C Weighting

Acceleration, Velocity & Displacement Spectra – Omega Arithmetic

Aliasing, Orders and Wagon Wheels

Amplitude And Energy Correction – A Brief Summary

Analyzing Shaft Twist And Repairing Damaged Tachos

Audio Equalisation Filter & Parametric Filtering

Average Waterfalls Or Average Orders?

C

Calculating Velocity Or Displacement From Acceleration Time Histories

Cleaning Up Data

Converting Acceleration, Velocity & Displacement

D

Data Decimation. What Do I Do?

Data Smoothing : RC Filtering And Exponential Averaging

Data Windows : What, why and when?

Developing an Algorithm for Tick Detection

Do Missing Tacho Pulses Mean The End Of The Road For Your Test?

Does The Signal Have A Gaussian Probability Density?

Don’t Let Spikes Spoil Your Data

Dynamic Range And Overall Level : What Are They ?

E

Evaluating A Closed Loop Control System For High Pressure Pumps

Examples Of Event Extraction And Removal

Exhaust Development Using A Prosig P8000 System

F

Fatigue & Durability Testing

Frequency, Hertz & Orders

G

Getting Rid Of Spikes

H

High Dynamic Range – Fact or Fiction?

High Pass Filtering And Tacho Signals

How To Analyze Noise & Vibration In Rotating Machines

How To Calculate A Resultant Vector

Human Exposure To Vibration In Buildings (DIN 4150-2:1999-06 & DIN 45669-1:1995-06)

I

Interpolation Versus Resampling To Increase The Sample Rate

Interpretation of the Articulation Index

M

Measurement And Analysis Of Torsional Vibration

Measuring For Success

Measuring Torsional Crank Shaft Jitter

Measuring Torsional Twist & Vibration Along a Shaft or Through a Geartrain

Measuring Torsional Vibration 101

N

Negative Frequencies - What Are They?

N (continued)

Noise & Vibration Analysis: Back To Basics

Non-Linear Calibration Curve And Polynomial

Notes On Fourier Analysis

O

Order Cuts And Overall Level

Orders v Time – Comparing Overall Levels

P

Phase Between Signals

Q

Quantifying Signals - Peak, Peak-to-Peak, & RMS metrics

R

Removing A-Weighting From Time History Signals

Removing Phase Delay Using Phaseless Filtering

S

Shaft Displacement Measurement Using A PROTOR System

Smoothing Spectral Data

Sound Steering

Standard Octave Bands

T

Testing Times : Why & How We Measure Noise & Vibration

The Causes of Road Noise

The Intelligent Way To Sort, Extract & Analyze Signals

Time Varying Overall Level

Torsional Vibration, Tacho Pulses And Aliasing

U

Understanding & Measuring Noise

Understanding Filter Characteristics

Understanding The Cross Correlation Function

Understanding the Importance of Transducer Orientation

Understanding Windowing And Overlapping Analysis

V

Vibration : Measure Acceleration, Velocity or Displacement?

Vibration Monitoring Phase Measurement And The Tacho Signal

Video: Noise & Vibration From Rotating Machines

W

Waterfall Analysis: Frequency Resolution and Smearing

Waterfall Analysis: Frequency Spectrum or Order Spectrum?

What Are AC and DC Coupling?

What Are dB, Noise Floor & Dynamic Range?

What Can I Do About Spikes In My Data?

What Is Resonance?

What is Resonance? (Part 2)

What is Synchronous (Angular) Sampling?

What Is The Difference Between Single Ended & Differential Inputs?

Where Does The Noise Come From?

Which Should I Use? Real & imaginary? Or magnitude & phase?

Why is the microphone pressure reference 2*10^-5 Pascals?

Wide Band Integrators - What Are They?

Case Studies

0 1 2 3 4 5 6 7 8 9 A B C D E F G H

I J K L M N O P Q R S T U V W X Y Z

A Simple Noise Test

Analyzing Shaft Twist And Repairing Damaged Tachos

Building a new test model

Comparing Vibration On Bicycle Suspension

Developing an Algorithm for Tick Detection

Do You Need To Measure Brake Noise?

Engine Model Being Put Through Its Paces

Evaluating A Closed Loop Control System For High Pressure Pumps

Exhaust Development Using A Prosig P8000 System

Fatigue & Durability Testing

Getting Rid Of Spikes

In-situ balance of an Open Cycle Gas Turbine

In-Vehicle Voltage Supply From Cigar Lighter / Accessory Sockets

Measuring For Success

Measuring Torsional Crank Shaft Jitter

Measuring Torsional Twist & Vibration Along a Shaft or Through a Geartrain

Measuring Torsional Vibration 101

Non-Linear Calibration Curve And Polynomial

Shaft Displacement Measurement Using A PROTOR System

Sound Steering

Testing Times : Why & How We Measure Noise & Vibration

The Intelligent Way To Sort, Extract & Analyze Signals

Understanding & Measuring Noise

Using Your VCM To Monitor Auxiliary Equipment

Vibration Condition Monitoring Doesn't Get More Mobile Than This!

Vibration Condition Monitoring Using Your Android Smartphone

Tutorials & HowTo’s

A Different Way Of Averaging - Time Synchronous Averaging

A Simple Capture, Analysis and Report (Part 1)

A Simple Capture, Analysis and Report (Part 2)

A Simple Capture, Analysis and Report (Part 3)

A Simple Capture, Analysis and Report (Part 4)

Adding a DATS graph to a Powerpoint slideshow

Do Missing Tacho Pulses Mean The End Of The Road For Your Test?

Everything You Ever Wanted To Know About GPS But Were Afraid To Ask

How Can Social Networks Help Engineers?

How To Float Output Windows in DATS Acquisition V4

Prosig Launch YouTube Channel

Video: How To Calibrate Microphones & Accelerometers

What Can I Do About Spikes In My Data?

What Is Hammer Impact Testing?

News

2nd Annual Prosig / Portsmouth University Prize Awarded

45th UK Conference on Human Response to Vibration

A New Look for 2011

A New Partner In Condition Monitoring - VibrationDiagnostics Ltd

A New Partnership In Australia

Buzzing & Flickring: Two New Ways To Keep In Touch

Come & Meet Prosig At Automotive Testing

Come & see Prosig at Testing Expo North America 2012

Come and see Prosig at SAE 2013 Noise and Vibration Conference and Exhibition

Comparing Vibration On Bicycle Suspension

Cooling Down Using Sound Waves

Follow Prosig on Twitter & Facebook

GPS Selective Availability Lifted 10 Years Ago

Latest Version of DATS Software (V7.0.17) Released

Mari Aerotech To Attend Automotive Testing Expo India 2012

New Representation In Canada - Prosig Partner With Hoskin Scientific

New Version Of DATS Out Now - V7.0.22 Released

New Version Of DATS Software Begins Shipping To Customers

New version out now - DATS V7.0.19 Released

Noise & Vibration Blog Goes Mobile

Noise & Vibration Capture with GPS Tracking

Prosig Announce New Braking Analysis Tools

Prosig Awarded Contract To Upgrade Online Vibration Monitoring System At Wylfa

Prosig awarded ISO 9001 certification

Prosig Deutschland Exhibiting At SENSOR+TEST 2011

Prosig Fatigue Analysis Systems

Prosig launch new PROLOG data acquisition controller

Prosig Launch YouTube Channel

Prosig Power Units Offer New Levels Of Flexibility

Prosig Student Prize Awarded

Prosig to exhibit at Tenth International Conference on Recent Advances in Structural Dynamics (RASD)

Prosig's Australian Agent Will Be Exhibiting At Acoustics 2011

PROTOR Vibration Condition Monitoring System Installed in Three Thermal Power Plants in Spain for Iberdrola

See Prosig systems in action at "inter-noise 2011" in Osaka

Updated Protor System For Ringhals, Sweden

Visit Prosig at 2011 SAE Noise & Vibration Conference

Full Article Index

Signal Processing Articles

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C

D

E

F

G

H

I

M

N

N (continued)

O

P

Q

R

S

T

U

V

W

Case Studies

Tutorials & HowTo’s

News

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Signal Processing Articles

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Case Studies

Tutorials & HowTo’s

News

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