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US 2023/0328434 A1Published application
Low complexity howling suppression for portable karaoke
AssigneeHarman International Industries, Incorporated
InventorsJianwen ZHENG, Shao-Fu SHIH
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Abstract
A low complexity howling suppression system and method for portable karaoke system are provided. In the howling suppression, at least one infinite impulse response (IIR) filters are introduced for estimating the acoustic feedback picked up by the microphone from the real environment, and thereby to cancel out the acoustic feedback from the microphone input signal.
Claims20
A low complexity howling suppression method for a portable karaoke system, the method comprising the steps of:
- capturing, by at least one microphone, an input signal which comprises a source signal and an acoustic feedback;
- compressing and equalizing, in an electro-acoustic path, the input signal, and then feeding to an output signal after being amplified;
- playing back, by a loudspeaker, the output signal which is propagated through environment;
- and
- estimating, by at least one infinite impulse response (IIR) filter, the acoustic feedback, and thereby to cancel out the acoustic feedback from the input signal.
2 more elements
A portable karaoke system with low complexity howling suppression, the system comprising:
- at least one microphone for capturing an input signal which comprises a source signal and an acoustic feedback which is propagated through environment;
- an electro-acoustic path for compressing and equalizing the input signal, and then feeding to an output signal after amplified;
- a loudspeaker for playback the output signal;
- and
- at least one infinite impulse response (IIR) filter for estimating the acoustic feedback, and thereby to cancel out the acoustic feedback from the input signal.
2 more elements
Dependencies are inferred from the claim text.