This symposium on sound level meters is essentially a report of Committee Z24‐W‐18 of the American Standards Association, which for three years has been evolving a new standard for sound level meters. This new standard is more than a revision of the current one (Z24.3‐1944), since early in the deliberations of the committee it was decided that the standard warranted a completely new draft.
All persons participating in the symposium are either members of Committee Z24‐W‐18 or have been closely associated with the committee activity. In addition to the participants, other committee members have done yeoman work in the preparation of the draft through its numerous revisions. These other members are Mr. George Bonvallet, Dr. Arnold Peterson, Dr. Paul Veneklasen, Dr. Richard Wells, and the late Dr. Paul Geiger.