Method and apparatus to detect voice activity by adding a random signal
AssigneeSamsung Electronics Co., Ltd.
InventorJae-youn Cho
Life of this patent
Estimating the term…
Abstract
A method and apparatus to detect voice activity by using a zero-crossing rate includes removing noise included in an audio signal, adding a random signal having energy of a predetermined size to the audio signal from which noise is removed, extracting predetermined voice detection parameters from the audio signal to which the random signal is added, and comparing the extracted predetermined voice detection parameters with a threshold value and determining voice and non-voice activities.
Claims17
A method of detecting voice activity, the method comprising:
- adding, using a processor, a random signal having energy of a predetermined size to an audio signal;
- extracting one or more predetermined voice detection parameters from the audio signal to which the random signal is added;
- and
- comparing the extracted predetermined voice detection parameters with a threshold value and determining voice and non-voice activities of the audio signal.
An apparatus to detect voice activity, comprising:
- a random signal generator included in a processor, which generates a random noise signal having energy of a determined size;
- an addition unit which adds the random signal generated by random signal generator to the audio signal;
- a voice determination parameter extracting unit which extracts predetermined voice detection parameters from the audio signal to which the random signal is added by the addition unit;
- and
- a voice determination unit which detects voice and non-voice activities by using the voice detection parameters extracted by the voice determination parameter extracting unit.
An audio processing device comprising:
- a voice activity detector which adds a random signal having energy of a determined size to an audio signal to extract one or more predetermined voice detection parameters and compares the extracted predetermined voice detection parameters with a threshold value to determine voice and non-voice activities;
- and
- an audio signal processing unit which performs voice coding and a voice recognizing process according to information about voice and non-voice activities detected by the voice activity detector.
A non-transitory computer readable recording medium having embodied thereon a computer program for executing a method of detecting voice activity comprising:
- adding a random signal having energy of a predetermined size to an audio signal;
- extracting predetermined voice detection parameters from the audio signal to which the random signal is added;
- and
- comparing the extracted predetermined voice detection parameters with a threshold value and determining voice and non-voice activities.
Dependencies are inferred from the claim text.