The Secret of Soundproofing That Supports Precise Acoustic Measurements

Not Just for Music! The Essential Role of “Soundproofing Technology for Measuring Sound” in Product Development

When you hear the term “soundproofing,” you might think of soundproof rooms for musical instruments or recording studios. However, what Enclosure focuses on is soundproof spaces for accurately measuring product sounds. We provide soundproof test rooms, anechoic chambers, and anechoic boxes for industries like automobile and home appliance manufacturers to measure product noise levels.

In other words, what’s needed here is not soundproofing for music but soundproofing for precise sound measurement.

Example: Noise Reduction Measures at a Home Appliance Manufacturer

For instance, a home appliance company, Company A, frequently received user complaints about noisy airflow from desktop fans. They decided to develop a quieter model, but first realized they needed to measure the noise levels. Not knowing what kind of sound level meters or measurement environments were required, the development team consulted Enclosure.

Enclosure proposed the following setup:

• **Place a microphone** at a specific distance from the sound source (the desktop fan) and measure the noise using a sound level meter.
• The recorded data displays sound pressure levels for each frequency, accurately identifying noise characteristics.

Designing Anechoic Boxes and Measurement Environments

The anechoic box provided by Enclosure was constructed with the following features to create a quiet environment capable of accurately measuring desktop fan sounds:

• Anechoic Box: Achieves background noise levels of -10 dB relative to the measured sound.
• Soundproof Layer: Designed to match required soundproofing levels.
• Absorption Layer: Engineered to prevent sound reflection, tailored to the target frequencies.
• Microphone: Optimized for the sound being measured.
• Cable System: Allows operation of the sound level meter from outside the box.
• Sound Level Meter: Equipped with frequency analysis for detailed acoustic data collection.
• Vibration Isolation Layer: Prevents external vibration interference.
• Casters & Adjusters: Facilitate mobility and leveling adjustments, adapting to various installation environments.

Creating “Silence” for Measuring Sound

To accurately measure sound, an extremely quiet environment is essential. In noisy environments, accurate measurements are impossible. That’s why Enclosure uses its technology to build soundproof facilities and create optimal measurement environments.

• Measurement Equipment: Sound level meters (with frequency analyzers)
• Measurement Environment: Anechoic box (designed to secure measurement distances)

In this way, Enclosure provides the technology and silence needed for product development, designing and manufacturing soundproof facilities that enable precise acoustic measurements.