Published by - E & F. N. Spon
                           An imprint of Chapman and Hall
                           London. New York. Tokyo. Melbourne. Madras

• Mechanism of generating a sound wave
• Frequencies and wavelengths
• Acoustic Power
• Acoustic Analogy
• Simplified block diagram of a sound level meter
• Equal loudness contours after Rabinson & Dadson
• Standard weighing networks for the sound level meter
• NC (Noise Criterion) curves
• NR (Noise Rating) curves
• Decibel Arithmetic - Addition and Subtraction
• Inverse Square Law
• Attenuation with distance from various sources
• Anatomy of the ear after Bilsom International Ltd
• Bony cochlea section after Bilsom International Ltd
• Section of cochlea (left) and basilar membrane with organ of corti after Bilsom International Ltd.
• Equal loudness contours after Robinson & Dadson
• Audiograms showing different stages of noise induced hearing loss
• Hearing loss with age
• Maximum recommended octave band sound pressure levels
• Maximum exposure times for varying sound pressure levels based on second action level of 90dBA
• The important areas of hearing after Bilsom International Ltd
• The effects of ear muffs, glass down and cotton wool
• Reflection, absorption and transmission at a barrier
• Absorber response curves
• Changes affecting the performance of membrane absorbers after Day, Ford & Lord
• Reflection from different surface shapes
• Development of sound field
• Components of sound fields and Reverberation time
• Directivity patterns of noise source
• Approximate SPL between floor and ceiling in a 'two dimensional' room 3m high
• Approximate SPL at centre of a uniform square array of equal sources in a 'two dimensional' space in terms of the centre spacing of the sources
• Bending vibration of a partition
• Measurement of SRI in laboratory
• Absorption versus insulation
• Mass Law Curve
• Mass Law + Stiffness + Coincidence
• Coincidence effect
• Flanking between rooms
• Cavity versus single wall
• Mass Law for common materials
• Combined element chart
• Table 1 = Recommended Isolation Efficiencies 150mm (6inch) Concrete Floor Slab
• Dynamic amplitude of vibration for an isolated machine when subjected to a constant disturbing force
• Transmissibility for a viscously damped system
• Relative merits of each types
• Basic sound or vibration measuring system
• Typical free field frequency response curves of the 25mm diameter condenser and piezoeletric microphones showing comparative sensitivities after Bruel & Kjaer
• Schematic constructions of piezoelectric and condenser microphones
• Octave and one third octave filters in a frequency analyzer after Bruel & Kjaer
• Block diagram of sound level meter using a condenser microphone
• A sound level meter and filter set for acoustic measurement
• Environment correction factors for calculating sound power level by the two-surface method after G M Diehl
• Comparing sound powers by contour method
• Simple noise transfer from source to receiver
• Typical noise control procedures
• Neighborhood noise control analysis
• Services located at the rear of the factory - just outside bedrooms windows
• Open topped offices provide no protection against noise in an enclosed space
• Acoustic screening
• Sound attenuation by a semi-infinite screen in free space after Maekewa
• Attenuation due to screening
• Alternative configurations of partial acoustic enclosures for production machinery
• Compound sound resistant cladding for noise radiating steel pipe
• Duct cladding using sound barrier matt applied over fibrous semi-rigid slab
• Noise reduction by configurations of acoustic enclosure and vibration isolating mounts after Bolt and Ingard
• Simple reactive attenuator suitable for high speed machines after EEUA and An acoustic filter that relies on the interference of reflections produced at various changes in section within the silencer body after EEUA
• Typical acoustic performances associated with the attenuator.
• Helmholtz resonator type of attenuator consisting of a chamber connected to the main duct through branch holes after EETA
• Attenuation values for side branch resonators
• Packaged dissipative attenuators, for air or gas handling ductwork
• Packaged rectangular attenuator and influence on typical noise spectrum
• Sketch of a high TL plenum after wells
• Measured TL for plenum with no absorptive lining and for various partial treatments after wells
• Correction 'a' to be added to plane axial-wave SIL of a duct to obtain the SIL for a random incidence
• Relationship between overall, direct and reflected sound fields
• Noise contours shaded areas indicate zones where reflected sound is highly significant
• Effect of percentage perforation of facing on absorption
• Interaction between acoustic absorption and condensation at external constructions
• Example of plan layout for suspended absorbers
• Typical spectrum for low speed and high speed reciprocating compressors
• Selection of reactive attenuators after Davis. Moore and Stevens
• Side branch Helmholtz resonator
• Transmission loss for typical side branch Helmholtz resonator with and without absorbent infill
• Estimation chart - engine noise levels
• Engine exhaust noise levels
• Inlet / turbocharger noise levels
• Estimation chart - air requirements for water cooled diesels
• Typical attenuation of exhaust mufflers
• Diagrammatic view of generator house
• Typical sound spectra of industrial sounds showing the wide range of shapes that can be encountered
• Sketch plan showing location of extension to factory
• Sketch plan showing modifications to factory
• Modifications to diesel generator installation
• Principle methods of air cooling electric motors
• Sound attenuating modifications for TEFC and CACA motors
• Production of magnetic noise
• Limiting mean sound power level in dB(A) for airborne noise emitted by rotating electrical machines
• Fan Characteristics and sound spectra
• Estimation of fan sound power level
• End reflection loss
• Reverberant sound pressure level computation
• Direct sound pressure level computation
• Effect of differential between pure tone and background
• Sound pressure level measured at 120m
• Noise level against distance from source in reverberant surroundings
• Operator noise levels in reverberant surroundings
• Noise levels from multiple identical machines in reverberant surroundings showing the effect of noise reduction at source
• Effect of fan average on airflow and noise (fan speed held constant) after international Harvester Co of Great Britain Ltd.
• Valve using many small parts after Blackborough 'Flash Flow'
• Blow-off attenuator