Apparatus and method for pitch-shifting audio signal with low complexity
AssigneeElectronics and Telecommunications Research Institute
InventorsYong Ju Lee, Jae-hyoun Yoo, Dae Young Jang, Kyeongok Kang, Tae Jin Lee
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Abstract
An apparatus and method for pitch-shifting an audio signal with low complexity are disclosed. The method includes identifying a distance between an audio object included in the audio signal and a listener, checking whether the distance between the audio object and the listener decreases, and performing stepwise stretching pitch-shifting of repeatedly using at least one of frequency components of the audio signal when the distance between the audio object and the listener decreases.
Claims13
A method for pitch-shifting an audio signal, the method comprising:
- identifying a distance between an audio object included in the audio signal and a listener;
- checking whether the distance between the audio object and the listener decreases;
- and
- performing stepwise stretching pitch-shifting of repeatedly using at least one of frequency components of the audio signal when the distance between the audio object and the listener decreases.
A method for pitch-shifting an audio signal, the method comprising:
- identifying a distance between an audio object included in the audio signal and a listener;
- checking whether the distance between the audio object and the listener increases;
- and
- performing stepwise pull pitch-shifting of deleting at least one of frequency components of the audio signal when the distance between the audio object and the listener increases.
An apparatus for pitch-shifting an audio signal, the apparatus comprising:
- a distance identifier configured to identify a distance between an audio object included in the audio signal and a listener;
- a change identifier configured to identify whether the distance between the audio object and the listener changes;
- a stretching pitch shifter configured to perform stepwise stretching pitch-shifting of repeatedly using at least one of frequency components of the audio signal when the distance between the audio object and the listener decreases;
- and
- a pull pitch shifter configured to perform stepwise pull pitch-shifting of deleting at least one of the frequency components of the audio signal when the distance between the audio object and the listener increases.
Dependencies are inferred from the claim text.