Speech recognition enhancer
AssigneeAlcatel
InventorMichael Walker
Life of this patent
Estimating the term…
Abstract
The invention concerns a speech recognition enhancer (51) and a speech recognition system comprising such speech recognition enhancer (51), an audio input unit (41) and a speech recognizer (61, 3). The speech recognition enhancer (51) is arranged between the audio input unit (41) and the speech recognizer (61, 3). The speech recognition enhancer (51) has a parametrizable pre-filtering unit (511), a parametrizable dynamic voice level control unit (512), a parametrizable noise reduction unit (513) and a parametrizable voice level control unit (514). The parameters of these parametrizable units (511, 512, 513, 514) are adjusted to the characteristics of the specific audio input unit (41) and/or the characteristics of the specific speech recognizer (61, 3) for adapting the audio input unit (41) to the speech recognizer (61, 3).
Claims12
A speech recognition system comprising:
- an audio input unit arranged in a terminal;
- a speech recognizer;
- an adjustable speech recognition enhancer, separate from and arranged between the audio input unit and the speech recognizer, comprising:
- a parametrizable pre-filtering unit,
- a parametrizable dynamic voice level control unit,
- a parametrizable noise reduction unit,
- a parametrizable voice level control unit, and
- a parameter setting unit;
- wherein the parameters of the parametrizable pre-filtering unit, the parametrizable dynamic voice level control unit, the parametrizable noise reduction unit and the parametrizable voice level control unit are adjusted by the parameter setting unit to the characteristics of the specific audio input unit and/or the characteristics of the specific speech recognizer of the speech recognition system for adapting the audio input unit to the speech recognizer,
- wherein parameters set by the parameter setting unit are stored in a data storage, and
- wherein the adjustable speech recognition enhancer is adapted to process speech wave forms only in the time domain.
A speech recognition enhancer for arrangement separate from and between an audio input unit and a speech recognizer of a speech recognition system comprising
- a parametrizable pre-filtering unit,
- a parametrizable dynamic voice level control unit,
- a parametrizable dynamic voice level control unit,
- a parametrizable noise reduction unit, and
- a parametrizable voice level control unit,
- wherein the parameters of the parametrizable pre-filtering unit, the parametrizable dynamic voice level control unit, the parametrizable noise reduction unit and the parametrizable voice level control unit are adjustable by a parameter setting unit to the characteristics of the specific audio input unit and/or the characteristics of the specific speech recognizer for adapting the audio input unit to the speech recognizer,
- wherein parameters set by the parameter setting unit are stored in a data storage,
- wherein the speech recognition enhancer is adapted to process speech wave forms only in the time domain.
Dependencies are inferred from the claim text.