Electronic and Acoustic System Evaluation and Response Analysis EASERA - May '19

The Guide for EASERA Measurements


Registration Closed


Course Facts Sheet

Title Electronic and Acoustics System Evaluation and Response Analysis EASERA

Language English

Type Online course

Instructor Emad El-Saghir

Maximum number of enrolled students 30

Material available for enrolled students starting 01.05.2019 12:00 CEST

Material available for enrolled students until 30.04.2020 12:00 CEST (EASE®/EASERA Pro/AFMG SysTune Training License is valid for 60 days only for training.)

Enrollment open? No

Enrollment closes on 30.04.2019 18:00 CEST

Estimated completion time of the course For example two weeks with 12 hours studying time per week

Software training license with course material EASERA Pro version valid for 60 days

Testing Yes

Certification Certificate of Successful Completion

Direct e-mail support until 01.08.2019 00:00 CEST extendable to 01.05.2020 00:00 CEST


About the Course

EASERA is a comprehensive acoustic measurement platform, which provides the user with a wide range of field as well as lab measurement, post-processing and assessement possibilities.

This online course covers the measurement platform and addresses the theoretical background that the user needs to use the tool.

A considerable part of the course treats the practical side of using EASERA in real-world field measurements.

Course Objectives

Upon completion of the course, the students will

1. get acquainted with the theoretical background in acoustics and digital signal processing for using EASERA,
2. learn how to set-up the measurement system and calibrate the measurement chain,
3. be familiar with the different test signals and how to make the right decision about using any one of them,
4. know the different methods of exchanging measurement files between EASERA and other platforms/formats,
5. understand the broad palette of available measurements in EASERA and how to perform any one of them,
6. gain better understanding of using EASERA through exploring several real-world cases, and
7. be trained in interpreting the measurement results and extracting conclusions out of them.

For Whom Is the Course?

The course is designed for those, who are involved in setting up, testing, commissioning and measuring room acoustics, sound reinforcement, voice alarm systems and components.

Previous knowledge and experience with acoustical measurements would be helpful but are not prerequisites for the course.

Students, however, are assumed to have a reasonable level of engineering general knowledge and to understand the basic definitions and terminology.


Direct E-Mail Support

Each course student shall have access to direct and personal e-mail support for the course curriculum for ninety days from the day of enrollment or releasing course material online, whichever is later.

During this period, the student can send his/her questions to the instructor, and shall receive an answer from the instructor within 48 hours at latest.

The e-mail support can be extended to one year against extra charge.


Testing and Certification

After each lecture, students shall have the chance to take a number of quizzes to test their progress with the course topics.

At the end of the course, there shall be a final set of quizzes to test the students' knowledge of the entire course and how far the met the objectives.

Certificates for this course are issued by sistrum.eu in cooperation with AFMG® Technologies GmbH. A certificate of successful completion shall be issued to the students, whose overall score based on all quizzes in the course including the final set is 75% or better.


Contact instructor with your questions and comments.


Course Curriculum

1. Fundamentals

1.1 Why measure?
1.2 What measure?
1.3 Basic concepts

1.3.1 Analogue versus digital
1.3.2 Sampling and quantization
1.3.3 Fourier transform
1.3.4 DFT/FFT/dual-channel FFT
1.3.5 Transfer functions and impulse response
1.3.6 Time and frequency domains
1.3.7 Amplitude and phase
1.3.8 Linear and logarethmic

1.4 Overview of measurement standards
1.5 General measurement set-up

2. Test Signals

2.1 The need for test signals
2.2 Test signal types

2.2.1 White noise
2.2.2 Pink noise
2.2.3 Sweeps
2.2.4 TDS
2.2.5 SIM
2.2.6 Others

2.3 Which signal is the right test signal?
2.4 Test signal in the room

3. Signal Acquisition

3.1 Measurement microphones

3.1.1 Wired microphones
3.1.2 Wireless microphones

4. Signal Processing

4.1 AD-DA boxes
4.2 Frames
4.3 Latency
4.4 Interface to PC

5. Related Measurement Instruments

5.1 Dodecaeder
5.2 Sound pressure level meter
5.3 Others

6. EASERA Structure

6.1 Tabs
6.2 File formats

7. Measurement Set-Up for EASERA

7.1 Preparation
7.2 Calibration
7.3 Test Signals
7.4 Measurement settings

8. Measurement Using EASERA

8.1 Screen Layout
8.2 Measurements

8.2.1 Impulse response
8.2.2 ETC
8.2.3 Schroeder back-integration curve
8.2.4 Amplitude response
8.2.5 Phase response
8.2.6 Reverberation time
8.2.7 Energy ratios
8.2.8 Speech intelligibility
8.2.9 Strength
8.2.10 Definition
8.2.11 Center Time
8.2.12 Spatial measures
8.2.13 Echo speech
8.2.14 Echo music
8.2.15 Distrotion

8.3 Tools

8.3.1 Overlays
8.3.2 Time windows
8.3.3 Filters

8.4 Waterfall and spectrogram
8.5 Results assessment
8.6 Real-time analysis

9. Real-World Cases

9.1 Case study 1
9.2 Case study 2
9.3 Case study 3

10. Putting All together

10.1 Checklist for measurements
10.2 Some concepts of statistics
10.3 Reporting measurement results


Emad El-Saghir
Emad El-Saghir

Emad El-Saghir earned his Bachelor's degree in electronics and communications engineering in 1992 from Ain-Shams University in Cairo. After working in the Middle East for several years, he left to Germany and earned his Master's degree in Acoustics from Dresden University of Technology in 2003.

Emad possesses an experience of more than 20 years in the industries of room-, electro-acoustics and sound reinforcement systems. He has been participating over these years in numerous projects in the Middle East and Europe including, among others, performing arts venues, landmark worship houses, stadia, universities, airports and museums.

Between 2012 and 2018, Emad was a Senior Consultant with Berlin acoustical consulting office ADA. Earlier between 2003 and 2009, he headed ADA presence in the Middle East.

Since 2018, Emad is the Head of Applications with the German loudspeaker manufacturer HOLOPLOT.

This course is closed for enrollment.