Title:Dynamic Range in Audiovisual Systems
 Document Number:AVIXA A104.01
 Type of Standard:Audio System Performance
 Status:In Development: Discovery Phase

When released, this standard will:

  • Characterize the required SPL from an audio system, recommend a signal-to-noise ratio (based on the anticipated acoustic ambient noise level in a venue) for different venue types, and provide measurement techniques using commonly available test equipment. 
  • Define the minimum idle noise floor level of the audio system (for lower NC rooms).
  • Define performance requirements for audio system gain structure for a variety of venues and provide standards for verifying and reporting the levels of the audio system at various stages of the signal path.
  • Determine an appropriate testing procedure for a system to sustain the specified qualities and characteristics over a defined time scale.
  • Define the performance metrics to measure the temporal output characteristics of an amplified audio system that will provide high quality, intelligibility, and fidelity.
 Publication Date:N/A
 Keywords:Audiovisual; audiovisual system; AV equipment; AV installation; AV system; audio; dynamic range; gain structure; noise; noise floor; signal-to-noise; SNR; signal-to-noise ratio
Development Notes:https://docdev.avixa.org/higherlogic/ws/projects/27
 Task Group Members:

John Monitto, CTS, Meyer Sound


Thomas Mullins, CTS, Affiliated Engineers


Jay Paul, Biamp Systems

 Roger Schwenke, Meyer Sound
 Jim Smith, CTS-D, SoundControl Technologies


AVIXA's consensus standards development process is accredited by ANSI, a private, non-profit organization that administers and coordinates the U.S. voluntary standardization and conformity assessment systems. ANSI is the sole U.S. representative of the two major non-treaty international standards organizations, the International Organization for Standardization (ISO), and, via the U.S. National Committee (USNC), the International Electrotechnical Commission (IEC). Accreditation by ANSI signifies that the procedures used by AVIXA in connection with the development of American National Standards meet the Institute's essential requirements for openness, balance, consensus, right to appeal, and due process.


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