What is a voice dictation mask?

A voice dictation mask is a handheld, padded, soundproof device that fits over the mouth and holds a microphone inside ¹. The person speaks into it quietly, so the microphone captures a clean voice and the people in the room hear little or nothing. The device is usually called a stenomask, and court reporters use it in voice writing, the method for dictating a record. "Voice dictation mask" is not a standard product name, so the search for it leads to the same devices described under the names below.

The mask keeps the voice inside and the microphone close

A stenomask is built around two things: a padded, soundproof enclosure and an internal microphone. A court reporting company describes it as a handheld device that fits over the reporter's mouth, and says that it captures the reporter's voice clearly for speech recognition software while it dampens the sound so that others in the room cannot hear it ¹.

The two jobs are linked. The microphone sits close to the mouth, which keeps the voice strong relative to the room. The enclosure keeps the voice from spreading, so the dictation can go unheard in a crowded room. The same idea sits behind the advice to keep a headset microphone close to the mouth in a noisy place. For that reason, see the question on noisy rooms.

Voice writing uses the mask to make a verbatim record

In voice writing, the mask stops the reporter's voice from being heard in the room while the reporter repeats the testimony into the recorder ². A voice writing system consists of a stenomask, an external sound digitizer and speech recognition software ³. The reporter repeats what is said, so the software gets a clean voice to convert to text.

Wikipedia describes voice writing as a transcription method used for court reporting, medical transcription, CART and closed captioning ⁴. So the mask is not only for courtrooms. Captioners and medical transcribers use the same method.

A court reporting company says that a trained voice writer can sustain accuracy above 95 percent at speeds exceeding 180 words per minute ⁵. That is the company's own claim about trained professionals, and we did not find an independent test that confirms it. Read it as a description of what the profession aims for, not as a figure for an everyday user.

It depends on who is using it and why

A stenomask is a professional tool, and most people do not need one. A voice dictation mask makes sense when you must speak in a room full of people and the words must be captured at high accuracy, as in court or live captioning. For most people at a desk, a headset microphone and a quiet room are usually enough. The guide to dictation microphones covers those choices.

Makers of these masks describe how much sound they block. We did not find an independent measurement that confirms how much a given mask reduces sound, so treat such figures as marketing claims. If you are weighing one, ask for a test in a room like yours before you buy.

The mask is also a question of privacy as well as accuracy. Its enclosure keeps the voice inside, and the microphone stays close, which addresses both problems at once. The glossary entry for voice writing explains the term in full. For the wider picture of dictating in shared spaces, read the guide to dictation and background noise, and the dictation overview lists every guide in the series.