Desktop-based Speech Recognition
For speech recognition on a standard desktop PC, the limiting factor is the sound card. Most sound cards today can record at sampling rates of between 16 kHz-48 kHz of audio, with bit rates of 8 to 16-bits per sample, and playback at up to 96 kHz.
As a general rule, a speech recognition engine works better with acoustic models trained with speech audio data recorded at higher sampling rates/bits per sample. But using audio with too high a sampling rate/bits per sample can slow the recognition engine down. A compromise is needed. Thus for desktop speech recognition, the current standard is acoustic models trained with speech audio data recorded at sampling rates of 16 kHz/16bits per sample.
Read more about this topic: Acoustic Model
Famous quotes containing the words speech and/or recognition:
“Nixon is the kind of politician who would cut down a redwood tree, then mount the stump for a speech on conservation.”
—Adlai Stevenson (1900–1965)
“The person who designed a robot that could act and think as well as your four-year-old would deserve a Nobel Prize. But there is no public recognition for bringing up several truly human beings.”
—C. John Sommerville (20th century)