Acoustic Test Fixtures for Accurate Audio Testing
Including products for ear-and headphone testing, hearing-protector testing and telephone testing GRAS’ test fixtures are top of the line solutions to fulfill your every need.
The GRAS 45CA is a flexible test fixture designed for evaluating the sound isolation performance of hearing protectors in compliance with ISO 4869-3, as well as for testing earphones and headphones in accordance with IEC 60318-1 or IEC 60318-4 standards. For applications requiring testing of hearing protectors under the ANSI/ASA S12.42 standard, the recommended solution is the GRAS 45CB.
The 45CC with TEDS is a highly adaptable dual-channel testing platform designed for evaluating headphones and headsets. It offers a wide range of configuration options, including microphones, IEC 60318-1 and 60318-4 ear simulators, anthropometric pinnae, and an optional ITU-T P.51 mouth simulator. Its adjustable design allows for precise alignment, accommodating various headphone and headset sizes to ensure high accuracy and repeatability. This system is ideal for use in R&D, quality control, production engineering, and end-of-line testing, making it a versatile solution across multiple stages of product development and manufacturing.
The GRAS 45EB Ear-bud Positioning System is specifically developed for use with the GRAS 45BB and 45BC Head and Torso Simulators. It is designed to accurately place and secure earbuds or in-ear devices within the concha region of the simulator's artificial pinna, ensuring consistent and repeatable positioning for reliable acoustic testing.
The GRAS 45CB Acoustic Test Fixture is engineered for evaluating the sound isolation performance of hearing protectors and earphones/headphones in compliance with the ANSI/ASA S12.42 standard. For testing aligned with ISO 4869-3, the recommended fixture is the GRAS 45CA.
In addition to standard compliance, the 45CB can also serve as a reliable platform for measurements conducted under the UK Ministry of Defence’s Defence Standard 23-015 (Land System Certification Part 03: Noise), expanding its usability to military and defense-related acoustic testing.
The GRAS 45AA Telephone Test Head is a purpose-built fixture designed for evaluating the acoustic characteristics of telephone handsets in line with international standards and guidelines. Its design merges high precision with a durable structure, ensuring consistent and reliable measurements while minimizing acoustic interference for stable, repeatable test outcomes.
The 45EA Handset Positioning System for KEMAR is a user-friendly solution for telephone acoustic testing and serves as a sophisticated alternative to traditional test fixtures. Engineered for optimal flexibility and acoustic precision, it is ideal for laboratory settings and product development teams focused on maintaining high audio quality standards in their devices.
The GRAS AL0030-1, AL0030-2, and AL0030-3 are specialized acoustic test chambers designed for production line testing of various mobile electronic devices, including smartphones, tablets, and Bluetooth® speakers. These chambers provide a controlled environment for accurate and efficient audio performance evaluation during manufacturing.
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