Online Decibel eLearning
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From Serebra Learning Corporation
Configuring Voice Interfaces
To configure router voice ports, identify how to monitor and troubleshoot voice ports, recognize factors affecting analog voice quality, and configure voice interface settings for optimal voice quality IT professionals responsible for preparing, configuring, and maintaining a voice and data network; candidates preparing for the Cisco Certified Voice Professional certification (CVOICE 642-432)
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From LearningMeasure.com
The Friis Transmission Equation

This course covers the Friis transmission equation. This equation models the coupling between two antennas under the assumption of far-field and free-space conditions. It has many applications in antenna measurement, communication, radar, and other areas. This is a short introductory course that assumes basic knowledge of the decibel and some basic RF concepts.
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Introduction to the decibel (dB)
...decibel (dB)
The purpose of this course is to introduce the concept of the decibel (dB). By the time the student
completes this course, the following concepts will have been introduced.
Introduction to logarithmic units
The Logarithm and its properties
Definition of the decibel and related units
Conversion between dB and Linear Units
Calculations with
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From PDHengineer. com-Decatur Professional Development, LLC
Roadway Shoulder Rumble Strips Practices and Policies
...he driver. Advantages and disadvantages of SRS Common decibel levels for driving over a SRS State Board Acceptance This course can be used by professional engineers to fulfill PDH requirements mandated by state and provincial licensing boards. Decatur Professional Development is an approved provider of continuing education in all states that pre-approve course providers. In all other
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An Introduction to the Fundamentals of Acoustics
...ic properties. Other topics that will be covered include: decibels, sound pressure level, sound power level, sound intensity level, vibration levels, frequency, temporal variations, speed of sound and wavelength, loudness, vibration transmissibility, and vibration isolation effectiveness.
To earn PDH credits for this course, the student must pass a multiple choice quiz of fifteen (15)
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