Soundstation Array™

Soundstation Array leverages SoundChipsponsored post-graduate research into the minimum requirements for generating a sound field that is sufficiently diffuse for ensuring repeatable and reproducible measurements of noise cancelling headphones, without the need for an anechoic or reverberation chamber. Rather than target strict conformity with International Standard definitions of diffusivity, Soundstation Array takes a more pragmatic approach that has been proven to provide an effective means for obtaining laboratory-grade results within a small office environment.

Soundstation Array comprises a rigid steel frame with adjustable speaker brackets, allowing four two-way loudspeakers to be located at the vertices of a tetrahedron. Coupled with a subwoofer, multichannel soundcard and amplifier, and a software-based signal generator, Soundstation Array renders a standalone, spatially-limited diffuse sound field large enough to accommodate a standard Head-and-Torso-Simulator (HATS), or even a human test subject, and diffuse enough for the precise measurement and characterisation of hybrid noise cancelling headphones up to 3kHz.

Soundstation Array can be operated within any type of environment, with no restriction on the proximity of locally reflecting surfaces. The frame comprises internal cable runs, ensuring neat installation and safe usage, and it can be easily assembled / dismantled using a single hex key. The height of the four loudspeaker brackets may be adjusted to suit different test fixtures, including HATS or human test subjects.

Features
  • 01

    Rigid, easy-to-install steel frame with integrated and height-adjustable loudspeaker mounts

  • 02

    Supplied with loudspeakers, subwoofer, multi-channel soundcard with amplifier and bespoke cabling

  • 03

    Renders a spatially-limited diffuse sound field with broadband, statistically decorrelated noise at each source

  • 04

    Optional SW-based equaliser to minimise difference between adjacent third octave bands (31.5 Hz to 8000 Hz)

Benefits
  • 01

    Enables repeatable and reproducible measurements of feedback, feed-forward and hybrid noise cancelling headphones

  • 02

    Provides a reliable environment for the characterisation and tuning of class-leading noise cancelling headphones

  • 03

    Supports various measurement setups, including third-party HATS and human test subjects

  • 04

    Enables performance comparisons to be made from measurements taken in different room environments