VOICE RECOGNITION APPARATUS AND METHOD FOR PERFORMING VOICE RECOGNITION
First Claim
Patent Images
1. A voice recognition apparatus comprising:
- an audio input module that receives an audio input and outputs an audio signal, the audio input module having a gain being configured to be adjustable;
a voice recognition module that detects a voice period, where a voice activity by a user is detected, in the audio signal and performs a voice recognition for the audio signal during the voice period;
a first level measurement module that measures a voice level of the audio signal in the voice period and outputs the voice level;
a second level measurement module that measures a noise level of the audio signal in a noise period and outputs the noise level, the noise period being a time period except the voice period;
a first calculation module that calculates an S/N ratio that is a ratio of the voice level to the noise level;
a distance measurement module that measures a current distance between the user and the voice input module;
a first memory module that stores a first threshold corresponding to an S/N ratio at which the voice recognition module is capable to perform the voice recognition with a given recognition rate;
a second memory module that stores a voice characteristic having a set of the voice level, the current distance and the gain, by which the voice recognition module has succeeded in performing the voice recognition;
a second calculation module that calculates a recommended distance range for the current distance, in which being estimated that the S/N ratio exceeds the first threshold, based on the voice characteristic; and
a display module that displays the recommended distance range and the current distance.
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Abstract
A voice recognition apparatus includes: a voice recognition module that performs a voice recognition for an audio signal during a voice period; a distance measurement module that measures a current distance between the user and an voice input module; a calculation module that calculates a recommended distance range, in which being estimated that an S/N ratio exceeds a first threshold, based on the voice characteristic; and a display module that displays the recommended distance range and the current distance.
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Citations
8 Claims
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1. A voice recognition apparatus comprising:
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an audio input module that receives an audio input and outputs an audio signal, the audio input module having a gain being configured to be adjustable; a voice recognition module that detects a voice period, where a voice activity by a user is detected, in the audio signal and performs a voice recognition for the audio signal during the voice period; a first level measurement module that measures a voice level of the audio signal in the voice period and outputs the voice level; a second level measurement module that measures a noise level of the audio signal in a noise period and outputs the noise level, the noise period being a time period except the voice period; a first calculation module that calculates an S/N ratio that is a ratio of the voice level to the noise level; a distance measurement module that measures a current distance between the user and the voice input module; a first memory module that stores a first threshold corresponding to an S/N ratio at which the voice recognition module is capable to perform the voice recognition with a given recognition rate; a second memory module that stores a voice characteristic having a set of the voice level, the current distance and the gain, by which the voice recognition module has succeeded in performing the voice recognition; a second calculation module that calculates a recommended distance range for the current distance, in which being estimated that the S/N ratio exceeds the first threshold, based on the voice characteristic; and a display module that displays the recommended distance range and the current distance. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for performing a voice recognition, the method comprising:
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receiving an audio input to output an audio signal with a gain being configured to be adjustable; detecting a voice period, where a voice activity by a user is detected, in the audio signal to perform the voice recognition for the audio signal during the voice period; measuring a voice level of the audio signal in the voice period to output the voice level; measuring a noise level of the audio signal in a noise period to output the noise level, the noise period being a time period except the voice period; calculating an S/N ratio that is a ratio of the voice level to the noise level; measuring a current distance from the user; storing a first threshold corresponding to an S/N ratio at which the voice recognition is capable to be performed to have a given recognition rate; storing a voice characteristic having a set of the voice level, the current distance and the gain, by which the voice recognition has been succeeded; calculating a recommended distance range for the current distance, in which being estimated that the S/N ratio exceeds the first threshold, based on the voice characteristic; and displaying the recommended distance range and the current distance.
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Specification