About Sound Basics
We are happy to answer your questions regarding our products and how we can best solve your sound & vibration needs.

Sound Basics
Decibel (dB) – A unit used to measure the intensity of a sound or the power level of an electrical signal by comparing it with a given level on a logarithmic scale. Or in simpler terms, the scale used to measure how loud something is.
Frequency (Hz) – The rate at which a vibration occurs that constitutes a wave, in a material (as in sound waves) usually measured per second. Often referred to as pitch or tone.

Sound Loss Basics
Transmission Loss – The measure of the decibel loss from one side of a barrier to another. This can be found in any situation where there is a physical barrier. The concept of transmission loss is crucial to understand which product best suits your needs.
STC Rating – The STC rating is how the noise isolation performance of the products we offer are quantified, with a higher STC rating generally offering a higher transmission loss. The STC rating is calculated by taking transmission loss values at various frequencies and is compared to standard STC reference values.

What Is Noise?
Any unwanted or disruptive sound that interferes with comfort, communication, or operations. In industrial and architectural settings, noise can originate from various sources such as machinery, HVAC systems, or environmental factors. Excessive noise not only impacts productivity and concentration but can also lead to regulatory compliance issues and health concerns, including hearing loss and stress-related conditions.
Ready To Reduce Noise?
J.A. Brown company expertly serving Pennsylvania from Pittsburgh to Philadelphia, Delaware, and Southern New Jersey for nearly 70 years!
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Why Choose J.A. Brown?
With decades of experience, a commitment to delivering tailored solutions, and a proven track record across diverse industries, J.A. Brown stands out as your trusted partner.
We understand the unique challenges of noise and vibration control, whether in manufacturing, healthcare, or commercial settings. When precision, reliability, and expertise matter, J.A. Brown delivers results that meet regulatory standards and exceed client expectations.
Decades of Expertise
With nearly 70 years in business, J.A. Brown brings unmatched knowledge and experience to tackle even the most challenging noise and vibration isolation issues.
Premier Partnerships
We use industry-leading products, from IAC Acoustics, Kinetics Noise Control, and Catalyst Acoustics Group to deliver unmatched performance and durability.
Tailored Solutions
We provide custom noise and vibration control solutions designed to meet the unique demands of your industry, ensuring precision and lasting performance.
Proven Results
We have a proven track record of successfully implementing noise and vibration control systems that meet regulatory standards and enhance operational environments.

Get In Touch
Fill out the below form and a J.A. Brown noise and vibration control specialist will respond to your inquiry. You can also reach us during normal business hours at: