Raise your professional potential in the world of Acoustic Engineering thanks to this 100% online Professional master’s degree”

Research and innovation in the field of Acoustics has been a constant. In that sense, technologies have played a transcendental role in the sound of spaces such as theaters, halls, buildings or with the ability to isolate noise in different environments.  All this, sponsored by technological progress and regulatory changes in favor of respect for the environment.  

In this scenario, the engineer who decides to develop his professional career in this field must possess in-depth theoretical knowledge and put it into practice in sectors as varied as construction, automotive, aviation, or in areas involved in the study of the effects or improvement of the materials for sound reinforcement. In response to this reality, this Professional master’s degree in Acoustic Engineering was developed by engineering professionals with extensive experience in this field.  

An academic proposal that will lead students to delve into acoustic physics, to advance in psychoacoustics, advanced acoustic instrumentation, to delve into acoustic instrumentation, advances in systems and signal processing or recording systems and recording techniques in studio. All this, moreover, in a dynamic way thanks to pedagogical resources such as video summaries, high quality multimedia pills, specialized readings and case studies.  }

Additionally, thanks to the Relearning, system, based on the reiteration of key concepts throughout the syllabus, the graduate will be able to significantly reduce the long hours of study and achieve a much simpler and more effective learning process.  

Undoubtedly, the student is faced with a first class academic option that is also distinguished  by its 100% flexible methodology. And the fact is that, all that is required is an electronic device with Internet connection to visualize, at any time of the day, the content hosted on the virtual platform. A unique opportunity that only TECH, the largest digital university in the world, can offer you. 

A first class academic proposal developed by TECH, a Google Premier Partner institution”

This Professional master’s degree in Acoustic Engineering contains the most complete and up-to-date program on the market. The most important features include:

• Development of case studies presented by experts in Acoustics engineering 
• The graphic, schematic and practical contents of the book provide technical and practical information on those disciplines that are essential for professional practice
• Practical exercises where the process of self-assessment can be used to improve learning 
• Its special emphasis on innovative methodologies  
• Theoretical lessons, questions to the expert, debate forums on controversial topics, and individual reflection assignments 
• Content that is accessible from any fixed or portable device with an Internet connection

Solve the main problems in audio recording and guarantee quality. All of this, with knowledge acquired from the comfort of your home”

The program's teaching staff includes professionals from the sector who bring the experience of their work to this training, as well as recognized specialists from reference societies and prestigious universities.  

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The design of this program focuses on Problem-Based Learning, in which the professional will have to try to solve the different professional practice situations that will arise throughout the academic course. For this purpose, the student will be assisted by an innovative interactive video system created by renowned experts.

You have a library of multimedia resources accessible 24 hours a day, 7 days a week"

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This academic itinerary will lead students to achieve a comprehensive learning about Acoustic Engineering. Solid knowledge that will allow the graduate to apply the concepts of acoustic physics, psychoacoustics, electroacoustics in insulation projects in rooms, buildings or any other environment. All this, moreover, in a dynamic way thanks to the numerous pedagogical resources in which TECH has used the latest technology applied to university teaching.  

Thanks to the Relearning method you will achieve advanced learning, without the need to spend long hours studying and memorizing”

Module 1. Engineering Physics Acoustics

1.1. Mechanical Vibrations 

1.1.1. Simple Oscillator 
1.1.2. Damped and Forced Oscillations 
1.1.3. Mechanical Resonance 

1.2. Vibrations in Strings and Rods 

1.2.1. The Vibrating String. Transverse Waves 
1.2.2. Equation of the Longitudinal and Transverse Wave in Rods
1.2.3. Transverse Vibrations in Bars. Individual Cases 

1.3. Vibrations in Membranes and Plates 

1.3.1. Vibration of a Plane Surface 
1.3.2. Two-dimensional Wave Equation for a Stretched Membrane 
1.3.3. Free Vibrations of a Clamped Membrane 
1.3.4. Forced Vibrations of a Membrane 

1.4. Acoustic Wave Equation. Simple Solutions 

1.4.1. The Linearized Wave Equation 
1.4.2. Velocity of Sound in Fluids 
1.4.3. Plane and Spherical Waves. The Point Source 

1.5. Transmission and Reflection Phenomena 

1.5.1. Changes of Medium 
1.5.2. Transmission at Normal and Oblique Incidence 
1.5.3. Specular Reflection. Snell’s Law 

1.6. Absorption and Attenuation of Sound Waves in Fluids

1.6.1. Absorption Phenomenon 
1.6.2. Classical Absorption Coefficient 
1.6.3. Absorption Phenomena in Liquids 

1.7. Radiation and Reception of Acoustic Waves 

1.7.1. Pulsed Sphere Radiation. Simple Sources. Intensity 
1.7.2. Dipole Radiation. Directivity 
1.7.3. Near-field and Far-field Behavior

1.8. Diffusion, Refraction and Diffraction of Acoustic Waves

1.8.1. Non-Specular Reflection. Dissemination 
1.8.2. Refraction Effect of Temperature 
1.8.3. Diffraction. Edge or Grating Effect 

1.9. Standing Waves: Tubes, Cavities, Waveguides

1.9.1. Resonance in Open and Closed Tubes 
1.9.2. Sound Absorption in Tubes. Kundt Tube 
1.9.3. Rectangular, Cylindrical and Spherical Cavities

1.10. Resonators, Ducts and Filters 

1.10.1. Long Wavelength Limit 
1.10.2. Helmholtz Resonator 
1.10.3. Acoustic Impedance 
1.10.4. Duct-Based Acoustic FiltersDiffraction 

Module 2. Psychoacoustics and Acoustic Signal Detection 

2.1. Noise Sources 

2.1.1. Sound Transmission Rate, Pressure and Wavelength 
2.1.2. Noise Background Noise 
2.1.3. Omnidirectional Noise Source. Power and Sound Intensity 
2.1.4. Acoustic Impedance for Plane Waves

2.2. Sound Measurement Levels 

2.2.1. Weber-Fechner Law. The Decibel 
2.2.2. Sound Pressure Level 
2.2.3. Sound Intensity Level 
2.2.4. Sound Power Level 

2.3. Measurement of the Acoustic Field in Decibels (Db) 

2.3.1. Sum of Different Levels 
2.3.2. Sum of Equal Levels 
2.3.3. Subtraction of Levels. Correction for Background Noise 

2.4. Binaural Acoustics 

2.4.1. Structure of the Aural Model 
2.4.2. Range and Sound Pressure-Frequency Relationship 
2.4.3. Detection Thresholds and Exposure Limits 
2.4.4. Physical Model 

2.5. Psychoacoustic and Physical Measurements 

2.5.1. Loudness and Loudness Level. Phones 
2.5.2. Pitch and Frequency. Timbre. Spectral Range 
2.5.3. Equal Loudness Curves (Isophonic). Fletcher and Munson and Others 

2.6. Acoustic Perceptual Properties 

2.6.1. Sound Masking. Tones and Noise Bands 
2.6.2. Temporal Masking. Pre and Post Masking 
2.6.3. Frequency Selectivity of the Ear. Critical Bands 
2.6.4. Non-linear Perceptual and Other Effects. Hass Effect and Doppler Effect 

2.7. The Phonatory System 

2.7.1. Mathematical Model of the Vocal Tract 
2.7.2. Emission Times, Dominant Spectral Content and Emission Level
2.7.3. Directivity of the Vocal Emission. Polar Curve 

2.8. Spectral Analysis and Frequency Bands 

2.8.1. Frequency Weighting Curves A (dBA). Other Spectral Weightings 
2.8.2. Spectral Analysis by Octaves and thirds of Octave. Octave Concept
2.8.3. Pink Noise and White Noise 
2.8.4. Other Noise Bands Used in Signal Detection and Analysis 

2.9. Atmospheric Attenuation of Sound in a Free Field 

2.9.1. Attenuation Due to Temperature and Atmospheric Pressure Variation in the Speed of Sound
2.9.2. Air Absorption Effect 
2.9.3. Attenuation Due to Height Above the Ground and Wind Velocity 
2.9.4. Attenuation Due to Turbulence, Rain, Snow or Vegetation
2.9.5. Attenuation Due to Noise Barriers or Terrain Variation Due to Interference

2.10. Temporal Analysis and Acoustic Indices of Perceived Intelligibility 

2.10.1. Subjective Perception of First Acoustic Reflections. Echo Zones 
2.10.2. Floating Echo 
2.10.3. Speech Intelligibility. Calculation of %ALCons and STI/RASTIIntelligibility of the Word

Module 3. Pumping Stations 

3.1. Noise 

3.1.1. Noise Descriptors by Energy Content Assessment: LAeq, SEL 
3.1.2. Noise Descriptors by Temporal Variation Assessment: LAnT 
3.1.3. Noise Categorization Curves: NC, PNC, RC and NR 

3.2. Pressure Measurement 

3.2.1. Sound Level Meter. General Description, Structure and Operation by Blocks 
3.2.2. Frequency Weighting Analysis. Networks A,C, Z 
3.2.3. Temporal Weighting Analysis. Slow, Fast, Impulse Networks 
3.2.4. Integrating Sound Level Meter and Dosimeter (Laeq and SEL). Classes and Types. Regulations 
3.2.5. Phases of Metrological Control Regulations 
3.2.6. Calipers and Pistophones 

3.3. Intensity Measurement 

3.3.1. Intensimetry. Properties and Applications 
3.3.2. Intensimetric Probes 

3.3.2.1. Pressure/Pressure and pressure/Velocity Types 

3.3.3. Calibration Methods. Uncertainties 

3.4. Sources of Acoustic Excitation 

3.4.1. Dodecahedral Omnidirectional Source. International Regulations 
3.4.2. Airborne Impulsive Sources. Gun and Acoustic Balloons 
3.4.3. Structural Impulsive Sources. Impact Machine 

3.5. Vibration Measurement 

3.5.1. Piezoelectric Accelerometers 
3.5.2. Displacement, Velocity and Acceleration Curves 
3.5.3. Vibration Analyzers. Frequency Weightings 
3.5.4. Parameters and Calibration 

3.6. Measuring Microphones 

3.6.1. Types of Measuring Microphones 

3.6.1.1. The Condenser and Pre-polarized Microphone. Basis of Operation 

3.6.2. Design and Construction of Microphones 

3.6.2.1. Diffuse Field, Random Field and Pressure Field

3.6.3. Sensitivity, Response, Directivity, Range and Stability
3.6.4. Environmental and Operator Influences. Measurement with Microphones 

3.7. Acoustic Impedance Measurement 

3.7.1. Impedance Tube Methods (Kundt): Standing Wave Range Method
3.7.2. Determination of Sound Absorption Coefficient at Normal Incidence. ISO 10534-2:2002 Transfer Function Method
3.7.3. Surface Method: Impedance Gun 

3.8. Acoustic Measuring Chambers 

3.8.1. Anechoic Chamber. Design and Materials 
3.8.2. Semi-Anechoic Chamber. Design and Materials 
3.8.3. Reverberation Chamber. Design and Materials 

3.9. Other Measurement Systems 

3.9.1. Automatic and Autonomous Measurement Systems for Environmental Acoustics
3.9.2. Measurement Systems Using Data acquisition Cards and Software 
3.9.3. Systems Based on Simulation Software 

3.10. Uncertainty in Acoustic Measurement 

3.10.1. Sources of Uncertainty 
3.10.2. Reproducible and Non-Reproducible Measurements 
3.10.3. Direct and Indirect Measurements 

Module 4. Audio Signal Processing and Systems 

4.1. Signals 

4.1.1. Continuous and Discrete Signals 
4.1.2. Periodic and Complex Signals 
4.1.3. Random and Stochastic Signals 

4.2. Series and Fourier Transform 

4.2.1. Fourier Series and Fourier Transform. Analysis and Synthesis 
4.2.2. Time Domain Versus Frequency Domain 
4.2.3. Complex Variables and Transfer Function 

4.3. Sampling and Reconstruction of Audio Signals 

4.3.1. A/D Conversion 

4.3.1.1. Sample Size, Coding and Sampling Rate

4.3.2. Quantization Error. Synchronization Error (Jitter) 
4.3.3. D/A Conversion. Nyquist-Shannon Theorem 
4.3.4. Aliasing Effect (Masking)

4.4. Frequency Response Analysis of Systems 

4.4.1. Discrete Fourier Transform. DFT 
4.4.2. The Fast Fourier Transform FFT
4.4.3. Bode Diagram (Magnitude and Phase)

4.5. Analog IIR Signal Filters 

4.5.1. Filtering Types. HP, LP, PB 
4.5.2. Filter Order and Attenuation 
4.5.3. Q types. Butterworth, Bessel, Linkwitz-Riley, Chebysheb, EllipticTypes
4.5.4. Advantages and Disadvantages of Different Filtering 

4.6. Analysis and Design of Digital Signal Filters 

4.6.1. FIR (Finite impulse Response) 
4.6.2. IIR (Infinite Impulse Response) 
4.6.3. Design with Software Tools such as Matlab 

4.7. Signal Equalization 

4.7.1. EQ types. HP, LP, PB 
4.7.2. EQ Slope (Attenuation) 
4.7.3. EQ Q (Quality Factor) 
4.7.4. EQ cut off (Cut Off Frequency) 
4.7.5. EQ boost (Reinforcement) 

4.8. Calculation of Acoustic Parameters Using Signal Analysis and Processing Software

4.8.1. Transfer Function and Signal Convolution 
4.8.2. IR Curve (Impulse Response) 
4.8.3. RTA (Real Time Analizer) Curve 
4.8.4. Step ResponseCurve 
4.8.5. RT 60, T30, T20 Curve 

4.9. Statistical Presentation of Parameters in the Signal Processing Software 

4.9.1. Signal Smoothing (Smoothing) 
4.9.2. Waterfall 
4.9.3. TR Decay 
4.9.4. Spectrogram 

4.10. Audio Signal Generation 

4.10.1. Analog Signal Generators. Tones and Random Noise 
4.10.2. Digital Pink and White Noise Generators 
4.10.3. Tonal or Sweep Generators (sweep) 

Module 5. Electroacoustics and Audio Equipment

5.1. Laws of Electroacoustic Sound Reinforcement and Public Address (PA) 

5.1.1. Increase of Sound Pressure Level (SPL) with Power 
5.1.2. Attenuation of Sound Pressure Level (SPL) with Distance 
5.1.3. Variation of Sound Intensity Level (SIL) with Distance and Number of Sources 
5.1.4. Sum of Coherent and Non-Coherent Signals in Phase Radiation and Directivity 
5.1.5. Distorting Effects of Propagating Sound and Solutions to be Followed

5.2. Electroacoustic Transduction 

5.2.1. Electroacoustic Analogies 

5.2.1.1. Electromechanical (TEM) and Mechanoacoustic (TMA) Spinner 

5.2.2. Electroacoustic Transducers. Types and Particularities 
5.2.3. Electroacoustic Model of Moving Coil Transducer. Equivalent Circuit 

5.3. Direct Radiation Electrodynamic Transducer 

5.3.1. Structural Components 
5.3.2. Features 

5.3.2.1. Pressure and Phase Response, Impedance Curve, Maximum and RMS Power, Sensitivity and Output, Directivity Polar Pattern, Polarity, Polarity Distortion Curve

5.3.3. Thiele-Small Parameters and Wright Parameters 
5.3.4. Frequency Classification

5.3.4.1. Radiator Types. Function as Monopole/Dipole 

5.3.5. Alternative Models: Coaxial or Elliptical 

5.4. Indirect Radiation Transducers

5.4.1. Horns, Diffusers and Acoustic Lenses. Structure and Types 
5.4.2. Directivity Control. Waveguides 
5.4.3. Compression Core 

5.5. Professional Acoustic Enclosures 

5.5.1. Infinite Screen 
5.5.2. Acoustic Suspension. Design. Modal Problems 
5.5.3. Low Frequency Reflector (Reflex). Design 
5.5.4. Acoustic Labyrinth. Design 
5.5.5. Transmission Lines. Design 

5.6. Filter Circuits and Crossovers 

5.6.1. Passive Crossover Filters. Order 

5.6.1.1. First Order Equations and Summation 

5.6.2. Active Crossover Filters. Analog and Digital 
5.6.3. Crossover Parameters 

5.6.3.1. Paths, Crossover Frequency, Order, Slope and Quality Factor 

5.6.4. Notch Filters and L-Pad and Zobel Networks 

5.7. AudioArrays  

5.7.1. Single Point Source and Dual Point Source 
5.7.2. Coverage. Constant and Proportional Directivity 
5.7.3. Grouping of Sound Sources. Coupled Sources 

5.8. Amplification Equipment 

5.8.1. Class A, B, AB, C and D Amplifiers. Amplification Curves 
5.8.2. Pre-Amplification and Voltage Amplification. High Impedance Amplifier or Line Amplifier 
5.8.3. Measurement and Calculation of the Voltage Gain of an Amplifier 

5.9. Other Audio Equipment in Recording Studio and Audio Production 

5.9.1. ADC/DAC Converters Performance Characteristics 
5.9.2. Equalizers. Types and Adjustment Parameters 
5.9.3. Dynamics Processors Types and Adjustment Parameters 
5.9.4. Limiters, Noise Gates, Delay and ReverbUnits. Parameter Settings 
5.9.5. Mixers. Types and Functions of the Modules. Spatial Integration Problems 

5.10. Monitoring in Recording Studios and Radio and Television Stations 

5.10.1. Near-Field and Far-Field Monitors in Control Rooms 
5.10.2.  Flush-Mount. Acoustic Effects. Comb Filter 
5.10.3. Time Alignment and Phase Correction

Module 6. Room Acoustics 

6.1. Distinction of Acoustic Insulation in Architecture 

6.1.1. Distinction Between Acoustic Insulation and Acoustic Treatment. Improvement of Acoustic Comfort 
6.1.2. Transmission Energy Balance. Incident Sound Power, Absorbed and Transmitted 
6.1.3. Sound Insulation of Enclosures. Sound Transmission Index 

6.2. Transmission of Sound 

6.2.1. Noise Transmission Typology Direct Airborne and Transmission Noise and Flanking 
6.2.2. Mechanisms of Propagation Reflection, Refraction, Absorption and Diffraction 
6.2.3. Sound Reflection and Absorption Rates 
6.2.4. Sound Transmission Paths Between Two Contiguous Enclosures

6.3. Sound Insulation Performance Parameters of Buildings 

6.3.1. Apparent Sound Reduction Index, R'
6.3.2. Standardized Difference of Level, DnT 
6.3.3. Standardized Level difference, Dn 

6.4. Parameters for Describing the Sound Insulation Performance of the Elements 

6.4.1. Sound Reduction Index, RSound Reduction Index, R
6.4.2. Acoustic Reduction Improvement Index, ΔR 
6.4.3. Normalized Difference in the Level of an Element, Dn,e 

6.5. Airborne Sound Insulation Between Enclosures 

6.5.1. Statement of the Problem 
6.5.2. Calculation Model 
6.5.3. Measurement Indexes 
6.5.4. Constructive Technical Solutions 

6.6. Impact Sound Insulation Between Enclosures 

6.6.1. Statement of the Problem 
6.6.2. Calculation Model
6.6.3. Measurement Indexes 
6.6.4. Constructive Technical Solutions 

6.7. Airborne Sound Insulation Against Exterior Noise 

6.7.1. Statement of the Problem 
6.7.2. Calculation Model 
6.7.3. Measurement Indexes 
6.7.4. Constructive Technical Solutions 

6.8. Analysis of Indoor to Outdoor Noise Transmission 

6.8.1. Statement of the Problem 
6.8.2. Calculation Model
6.8.3. Measurement Indexes 
6.8.4. Constructive Technical Solutions 

6.9. Analysis of Noise Levels Produced by the Equipment of Installations and Machinery 

6.9.1. Statement of the Problem 
6.9.2. Analysis of Sound Transmission Through the Installations 
6.9.3. Measurement Indexes 

6.10. Sound Absorption in Enclosed Spaces 

6.10.1. Total Equivalent Absorption Area 
6.10.2. Analysis of Spaces with Irregular Distribution of Absorption 
6.10.3. Analysis of Irregularly Shaped Spaces 

Module 7. Acoustic Insulation 

7.1. Acoustic Characterization in Enclosures 

7.1.1. Sound Propagation in Free Space 
7.1.2. Sound Propagation in an Enclosure. Reflected Sound 
7.1.3. Theories of Room Acoustics: Wavelet, Statistical and Geometrical Theory

7.2. Analysis of Wavelet Theory (f≤fs)

7.2.1. Modal Problems of a Room Derived from the Acoustical Wave Equation 
7.2.2. Axial, Tangential and Oblique Modes

7.2.2.1. Three-Dimensional Equation and Modal Reinforcement Characteristics of Different Types of Modes 

7.2.3. Modal Density. Schroeder Frequency. Spectral Curve of Application of Theories 

7.3. Modal Distribution Criteria 

7.3.1. Aurean Measures 

7.3.1.1. Other Posterior Measures (Bolt, Septmeyer, Louden, Boner, Sabine)

7.3.2. Walker and Bonello Criterion 
7.3.3. Bolt Diagram 

7.4. Statistical Theory Analysis (fs≤f≤4fs)

7.4.1. Homogeneous Diffusion Criterion. Sound Temporal Energy Balance 
7.4.2. Direct and Reverberant Field. Critical Distance and Room Constant 
7.4.3. TR. Sabine Calculation. Energy Decay Curve (ETC curve)
7.4.4. Optimal Reverberation Time. Beranek Tables 

7.5. Geometric Theory Analysis (f≥4fs)

7.5.1. Specular and Non-specular Reflection. Application of Snell's Law for f≥4fs.geometry Theory Analysis (f≥ 4fs)
7.5.2. First-order Reflections. Echogram 
7.5.3. Floating Echo 

7.6. Materials for Acoustic Conditioning. Absorption 

7.6.1. Absorption of Membranes and Fibers. Porous Materials 
7.6.2. Acoustic Reduction Coefficient NRC 
7.6.3. Variation of Absorption as a Function of Material Characteristics (Thickness, Porosity, Density, etc.)

7.7. Parameters for the evaluation of the acoustic quality in enclosures 

7.7.1. Energetic Parameters (G, C50, C80, ITDG) 
7.7.2. Reverberation Parameters (TR, EDT, BR, Br) 
7.7.3. Spatiality Parameters (IACCE, IACCL, LG, LFE, LFCE) 

7.8. Room Acoustic Design Procedures and Considerations

7.8.1. Reduction of Direct Sound Attenuation from Room Shape 
7.8.2. Analysis of Room Shape in Relation to Reflections 
7.8.3. Prediction of the Noise Level in a Room 

7.9. Acoustic Diffusers 

7.9.1. Polycylindrical Diffusers 
7.9.2. Maximum Sequence Length (MLS) Schroeder Diffusers 
7.9.3. Quadratic Residual Schroeder Diffusers (QRD) 

7.9.3.1. One-dimensional QRD Diffusers 
7.9.3.2. Two-dimensional QRD Diffusers 
7.9.3.3. Primitive Root Schroeder Diffusers (PRD) 

7.10. Variable Acoustics in Multifunctional Spaces Elements for Their Design

7.10.1. Design of Variable Acoustic Spaces from Variable Physical Elements
7.10.2. Design of Variable Acoustic Spaces from Electronic Systems
7.10.3. Comparative Analysis of the Use of Physical Elements vs Electronic Systems 

Module 8. Acoustic Installations and Testing 

8.1. Acoustic Study and Reports 

8.1.1. Types of Acoustic Technical Reports 
8.1.2. Contents of Studies and Reports 
8.1.3. Types of Acoustic Tests 

8.2. Planning and Development of Airborne Sound Insulation Tests

8.2.1. Measurement Requirements 
8.2.2. Recording of Results 
8.2.3. Test Report 

8.3. Evaluation of the Global Magnitudes for Airborne Sound Insulation in Buildings and Building Elements 

8.3.1. Procedure for the Evaluation of Global Magnitudes 
8.3.2. Comparison Method 
8.3.3. Spectral Fitting Terms (C or Ctr) 
8.3.4. Results Evaluation 

8.4. Planning and Development of Impact Sound Insulation Tests 

8.4.1. Measurement Requirements 
8.4.2. Recording of Results 
8.4.3. Test Report 

8.5. Evaluation of the Global Magnitudes for Impact Sound Insulation in Buildings and Building Elements 

8.5.1. Procedure for the Evaluation of Global Magnitudes 
8.5.2. Comparison Method 
8.5.3. Results Evaluation 

8.6. Planning and Development of Airborne Sound Insulation Tests facades 

8.6.1. Measurement Requirements 
8.6.2. Recording of Results 
8.6.3. Test Report

8.7. Planning and Development of Reverberation Time Tests 

8.7.1. Measurement Requirements: Showgrounds 
8.7.2. Measurement Requirements: Ordinary Enclosures 
8.7.3. Measurement Requirements: Open-plan Offices 
8.7.4. Recording of Results 
8.7.5. Test Report 

8.8. Planning and Development of Speech Transmission Index (STI) Measurement Tests in Enclosures

8.8.1. Measurement Requirements 
8.8.2. Recording of Results 
8.8.3. Test Report 

8.9. Planning and Development of Tests for the Evaluation of the Transmission of Interior Noise to the Exterior 

8.9.1. Basic Measurement Requirements 
8.9.2. Recording of Results 
8.9.3. Test Report 

8.10. Noise Control 

8.10.1. Types of Sound Limiters 
8.10.2. Sound Limiters 

8.10.2.1. Peripherals 

8.10.3. Environmental Noise Meter 

Module 9. Recording Systems and Studio Recording Techniques 

9.1. The Recording Studio 

9.1.1. The Recording Room 
9.1.2. Design of Recording Rooms 
9.1.3. The Control Room 
9.1.4. Control Room Design 

9.2. Recording Process 

9.2.1. Pre-Production 
9.2.2. Recording in the Studio 
9.2.3. Postproduction  

9.3. Technical Production in the Recording Studio 

9.3.1. Roles and Responsibilities in Production 
9.3.2. Creativity and Decision Making 
9.3.3. Resources Management 
9.3.4. Type of Recording 
9.3.5. Room Types 
9.3.6. Technical Equipment 

9.4. Audio Formats 

9.4.1. Audio File Formats 
9.4.2. Audio Quality and Data Compression 
9.4.3. Format Conversion and Resolution 

9.5. Cables and Connectors 

9.5.1. Electrical Wiring 
9.5.2. Charging Wiring 
9.5.3. Analog Signal Wiring 
9.5.4. Digital Signal Wiring 
9.5.5. Balanced, Unbalanced, Stereo and Monophonic Signal

9.6. Audio Interfaces 

9.6.1. Functions and Characteristics of Audio Interfaces 
9.6.2. Configuration and Use of Audio Interfaces 
9.6.3. Choosing the Right Interface for Each Project 

9.7. Studio Headphones 

9.7.1. Structure 
9.7.2. Types of Headphones 
9.7.3. Specifications 
9.7.4. Binaural Reproduction

9.8. The Audio Chain 

9.8.1. Signal Routing 
9.8.2. Recording Chain 
9.8.3. Monitoring Chain 
9.8.4. MIDI Recording 

9.9. Mixer 

9.9.1. Types of Inputs and Their Characteristics 
9.9.2. Channel Functions 
9.9.3. Mixers 
9.9.4. DAW Controllers 

9.10. Studio Microphone Techniques 

9.10.1. Microphone Positioning 
9.10.2. Microphone Selection and Configuration 
9.10.3. Advanced Microphone Techniques 

Module 10. Environmental Acoustics and Action Plans 

10.1. Analysis of Environmental Acoustics 

10.1.1. Sources of Environmental Noise 
10.1.2. Types of Environmental Noise According to their Temporal Evolution 
10.1.3. Effects of Environmental Noise on Human Health and Environment 

10.2. Indicators and Magnitudes of Environmental Noise 

10.2.1. Aspects that Influence the Measurement of Environmental Noise 
10.2.2. Environmental Noise Indicators 

10.2.2.1. Day-evening-night Level (Lden) 
10.2.2.2. Day-night Level (Ldn) 

10.2.3. Other Environmental Noise Indicators 

10.2.3.1. Traffic Noise Index (TNI) 
10.2.3.2. Noise Pollution Level (NPL) 
10.2.3.3. SEL Level 

10.3. Environmental Noise Measurement 

10.3.1. International Measurement Standards and Protocols 
10.3.2. Measurement Procedures 
10.3.3. Environmental Noise Assessment Report 

10.4. Noise Maps and Action Plans 

10.4.1. Acoustic Measures 
10.4.2. General Noise Mapping Process 
10.4.3. Noise Control Action Plans 

10.5. Sources of Environmental Noise: Types 

10.5.1. Traffic Noise 
10.5.2. Railroad Noise 
10.5.3. Aircraft Noise 
10.5.4. Activity Noise 

10.6. Noise Sources: Control Measures 

10.6.1. Control at the Source 
10.6.2. Propagation Control 
10.6.3. Receiver Control 

10.7. Traffic Noise Prediction Models 

10.7.1. Traffic Noise Prediction Methods 
10.7.2. Theories of Generation and Propagation 
10.7.3. Factors Influencing Noise Generation 
10.7.4. Factors Affecting Propagation 

10.8. Acoustic Barriers 

10.8.1. Functioning of an Acoustic Barrier Principles 
10.8.2. Types of Acoustic Barriers 
10.8.3. Design of Acoustic Barriers 

10.9. Evaluation of Noise Exposure in the Work Environment 

10.9.1. Identification of the Consequences of Exposure to High Noise Levels 
10.9.2. Methods for Measuring and Assessing Noise Exposure (ISO 9612:2009) 
10.9.3. Exposure Rates and Maximum Exposure Values 
10.9.4. Technical Measures to Limit Exposure 

10.10. Assessment of Exposure to Mechanical Vibration Transmitted to the Human Body 

10.10.1. Identification of the Consequences of Exposure to Whole-Body Vibration 
10.10.2. Measurement and Assessment Methods 
10.10.3. Exposure Rates and Maximum Exposure Values 
10.10.4. Technical Measures to Limit Exposure

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