ANSI/AVIXA A102.01:2023, Audio Coverage Uniformity

Whether in a home theater, conference room, classroom, performing arts venue, or other audio environment, sound quality can vary significantly depending on where a listener is seated. A person sitting directly in front of a loudspeaker may experience a different sound level than someone several seats away. Measurements can help Audio-visual (AV) professionals identify variations in sound pressure levels throughout a space. ANSI/AVIXA A102.01:2023, Measurement and Classification of Audio Coverage Uniformity in Listener Areas provides a procedure to measure and classify the uniformity of early arriving energy from a sound system across a listener area.

What Characterizes the Performance of a Sound System?

ANSI/AVIXA A102.01:2023 explains that the performance of a sound system can be characterized by several factors including uniformity of coverage, tonal balance and consistency, gain before feedback, and maximum sound pressure level. This American National Standard specifically focuses on the uniformity of coverage of a sound system’s early arriving energy to the listener area(s).

Uniformity of Coverage in Sound

Uniformity of coverage in sound and speakers means that the volume and tonal balance of the sound remain even and consistent across every part of the listening area, regardless of where a listener is sitting or standing. This keeps volume and sound quality consistent across an entire listening area (e.g., home theaters, auditoriums, conference rooms, classrooms, etc.)

ANSI/AVIXA A102.01:2023 aims to establish a method by which a sound system’s coverage can be assessed and classified.

What Is ANSI/AVIXA A102.01:2023?

ANSI/AVIXA A102.01:2023 defines parameters for characterizing a sound system’s coverage of defined listener areas. It provides measurement procedures and performance classifications to assess the uniformity of coverage of a sound system’s early arriving energy, with the goal of achieving consistent sound pressure levels throughout defined listener areas. The procedure associated with this American National Standard is one of many verifications of the deployment and performance of a sound system.

ANSI/AVIXA A102.01:2023 excludes testing or measuring for spectral balance, gain before feedback, maximum sound pressure level, and other parameters required to assess the total performance of a sound system.

Supporting Consistent Listening Experiences

An ideal sound system design allows all listeners to hear reproduced content at approximately the same sound pressure level, regardless of their position within a designated listener area. Achieving consistent audio coverage requires careful consideration of a space’s physical layout and sound system configuration. Factors such as room size, seating arrangements, loudspeaker placement, and the distance between speakers and listeners can influence how sound travels throughout an environment.

For example, listeners seated farther from a loudspeaker may experience different sound levels than those positioned nearby, while room layouts can create variations in how audio reaches different areas. These differences can affect the clarity and overall quality of the listening experience, particularly in environments where consistent sound reproduction is important, such as home theaters, conference rooms, classrooms, and performance venues.

By evaluating audio coverage uniformity during sound system design and performance assessment, AV professionals can identify variations in sound pressure levels and make informed decisions about system configuration to support a more consistent listening experience across designated listener areas.

Where to Find ANSI/AVIXA A102.01:2023

ANSI/AVIXA A102.01:2023, Measurement and Classification of Audio Coverage Uniformity in Listener Areas is available on the ANSI Webstore.

ANSI/AVIXA A102.01:2023 was developed by the Audiovisual and Integrated Experience Association (AVIXA).

Please direct any technical questions relating to this American National Standard to the developer. You can find the contact information for all ANSI-accredited standards developers here: List of ANSI-Accredited Standards Developers (ASDs).

For further information, please refer to: Who to Contact for Standards Related Questions.