Voice disorders related to occupation and work environment are often o
bserved in ENT consultations. Advising these patients requires not onl
y the investigation of their vocal capacities but also knowledge about
their vocal load. The patient will name extreme demands as the reason
for vocal problems whereas the employer will want to know if the pati
ent is capable of doing the work required of him. For an objective mea
surement of vocal load, a voice accumulator has been developed. This p
ortable instrument records total speaking time and sound level over a
period of several hours. The data can be transferred to a personal com
puter which analyses voiced time (s) between 60 and 112 dB(A)s. Thus,
more precise and objective documentation of vocal demands in some prof
essions can finally be obtained. With these results, it is possible to
monitor vocal ability or disability during vocal rehabilitation.