The right choice of microphone for optimal speech recognition

The choice of microphone and how you handle it determine the quality of speech recognition. Four points matter: microphone type, position, pop filter and keeping the microphone still.

Choosing the right microphone

Various types of microphone are suitable for speech recognition. Condenser microphones are often the best choice because they are more sensitive and offer higher sound quality than dynamic microphones. A USB microphone is easy to connect and usually delivers good sound quality.

Positioning and holding the microphone

• Place the microphone close to your mouth, but neither too far away nor too close.
• Keep it away from ventilation openings, air conditioning and other devices that generate noise.
• Speak directly into the microphone.
• Do not touch or move the microphone while dictating, as this causes interference.

Using a pop filter

A pop filter reduces sibilants and hard consonants that can cause problems for speech recognition. It fits over the microphone and absorbs the air movement produced by loud pronunciation.

Key points

• Condenser and USB microphones generally deliver the best recognition quality.
• Position and a steady hold are as important as the device itself.
• A pop filter reduces interference during recording.

Further advice can be found in the article Tips for effective dictation with speech recognition software. For optimal recognition quality we recommend the PowerMic III, available in the DEVACON shop. The accompanying speech recognition solution is described on the page ProDictate.