24 Sound Isolation

Noise isolation is an acoustical issue we regularly confront. The two primary methods for noise to be transmitted is airborne and structure-borne. Airborne sound sources pass sound by the air which causes the partition (wall or floor ceiling) to vibrate.  The vibration is transmitted and produces noise on the other side. Airborne sound sources include: speech, TV (assuming the unit is not vibrating the partition), stereos, animals, etc.

Structure-borne sound is transmitted from a source vibrating the partition (wall or floor). The vibration of the partition produces sound on the other side. Examples of structure-borne sound sources include: sound from walking on a tile or wood floor, mechanical units (such as a roof top HVAC), plumbing in walls, etc.

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14 Cell Tower Noise Evaluation Phoenix

Noise Expert (acoustical engineers) is evaluating the noise radiating from an existing cell tower.  The primary noise sources are the air conditioner units mounted to the equipment storage buildings.

The goal is to determine the noise levels from the air conditioning units at closest residences.  At the closest residences, there are many other noise sources including: traffic, residential air conditioning units, and aircraft.

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13 Office Building Sound Transmission Testing (FSTC)

Noise Expert (acoustical engineers) measured the Field Sound Transmission Class (FSTC) for seven different walls in a Lockheed Martin office building.  The building was going to be remodeled and some of the rooms were going to have sensitive activity that required an FSTC 50.

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9 Mechanical Noise Barriers

Noise Expert has done a few project recently evolving mechanical noise. There are a few considerations when doing these projects,  one is to address the residents near the noise source. Noise regulation includes statutes or guidelines relating to sound transmission established by national, state or provincial and municipal levels of government. Large units such as transformers, generators, pumps cause unwanted noise and at times can be unpleasant to view.

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8 Litigation in Multi-Housing Buildings – Noise

The top 3 reasons for litigation encountered in multi-housing buildings. In fact, pets, parking and impact noises (footsteps such as high heels, falling objects, moving furniture, etc.) are the main sources of conflict experienced in condos, apartments and hotels. With the evolution of floor coverings in such environments (from carpet/resilient to wood), soundproofing is becoming a major concern in renovation and new construction. Today, before purchasing a housing unit, buyers are more than ever asking about the acoustical performance.

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6 Indoor Theme Parks

Noise Expert has evaluated the noise at several indoor attractions including: Sea Life and Lego Land.  The primary noise issues that we addressed was sound isolation between display areas (where walls do not go to the structure) and the room acoustics in various spaces.  Our study included predictions and measurements.