Acoustic Response Measurements of Screens and Two-Layer Systems in an Impedance Tube

Two different films were sampled 40 times each to characterize their acoustic parameters in an impedance tube with an inner diameter of 44.44mm. Measurements span the [4, 4520] Hz band and include configurations with melamine and glass wool backings, which were also characterized using 3 and 2 samples respectively. The dataset was created by researchers including Mathieu Gaborit from the Centre National de la Recherche Scientifique and is released under a Creative Commons Attribution license.

Use Cases

• Modeling acoustic impedance of woven and non-woven films based on characterized parameters.
• Analyzing the sound absorption performance of two-layer systems combining films with porous backings.
• Calibrating or validating acoustic simulation software using empirical impedance tube measurements.
• Studying the effect of backing material type and sample preparation on acoustic response.

Strengths

• Includes a high number of repeated samples, with 40 samples per film type for characterization.
• Measurements cover a specific and wide frequency band from 4 Hz to 4520 Hz.
• The experimental protocol is detailed, mentioning calibration before each session and specific references for characterization methods.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

Centre National de la Recherche Scientifique

Collection Method

Manual sampling and measurement in an impedance tube (Mecanum 3-microphones tube).