Audio processing device and audio processing method
AssigneeFujitsu Limited
InventorsTaro Togawa, Sayuri Nakayama, Takeshi Otani
Life of this patent
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Abstract
There is provided an audio processing device including a memory, and a processor coupled to the memory and the processor configured to detect a first acoustic feature amount and a second acoustic feature amount of an input audio, calculate a coefficient for the second acoustic feature amount based on a time change amount by calculating the time change amount of the first acoustic feature amount, and calculate a statistical amount for the second acoustic feature amount based on the coefficient.
Claims13
An audio processing device comprising:
- a memory;
- and
- a processor coupled to the memory and the processor configured to:
- detect a first acoustic feature amount and a second acoustic feature amount of an input audio;
- calculate a time change amount of the first acoustic feature amount;
- specify a period in which the time change amount of the first acoustic feature amount is less than a first threshold value;
- calculate a coefficient for the second acoustic feature amount according to a length of the period, wherein the coefficient is a first value when the length of the period is less than a second threshold value and the coefficient is a second value when the length of the period is equal to or greater than the second threshold value;
- and
- calculate a statistical amount for the second acoustic feature amount based on the coefficient.
An audio processing method comprising:
- detecting a first acoustic feature amount and a second acoustic feature amount of an input audio;
- calculating a time change amount of the first acoustic feature amount;
- specifying a period in which the time change amount of the first acoustic feature amount is less than a first threshold value;
- calculating a coefficient for the second acoustic feature amount according to a length of the period, wherein the coefficient is a first value when the length of the period is less than a second threshold value and the coefficient is a second value when the length of the period is equal to or greater than the second threshold value;
- and
- calculating a statistical amount for the second acoustic feature amount based on the coefficient, by a processor.
A computer-readable non-transitory recording medium storing a program that causes a computer to execute a procedure, the procedure comprising:
- detecting a first acoustic feature amount and a second acoustic feature amount of an input audio;
- calculating a time change amount of the first acoustic feature amount;
- specifying a period in which the time change amount of the first acoustic feature amount is less than a first threshold value;
- calculating a coefficient for the second acoustic feature amount according to a length of the period, wherein the coefficient is a first value when the length of the period is less than a second threshold value and the coefficient is a second value when the length of the period is equal to or greater than the second threshold value;
- and
- calculating a statistical amount for the second acoustic feature amount based on the coefficient.
Dependencies are inferred from the claim text.