Wearable electronic device with low frequency noise reduction
An electronic device, electro-acoustic technology, applied in earphones to reduce environmental noise, sounding equipment, electrical components, etc., can solve problems such as reducing the signal-to-noise ratio
Active Publication Date: 2021-06-22
GN AUDIO AS
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Problems solved by technology
This frequency equalization in turn requires a large gain at low frequencies, thus degrading the signal-to-noise ratio, especially at low frequencies
Method used
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[0102] figure 1A block diagram of a wearable electronic device with a processor in a first embodiment is shown. The block diagram shows a wearable electronic device 100 having a first electro-acoustic input transducer 121 in the form of a first microphone and a second electro-acoustic input transducer 122 in the form of a second microphone. The microphone is arranged to pick up the first acoustic signal and convert the first acoustic signal into a first microphone signal x1 and a second microphone signal x2. The wearable electronic device further comprises a third electro-acoustic input transducer 131 in the form of a third microphone arranged to pick up a second acoustic signal and convert the second acoustic signal into a third microphone signal x3; the third electro-acoustic input transducer in the form of a speaker An electroacoustic output transducer 132 and a processor 140 . The processor 140 may include a processing module. The processor 140 may communicate with a re...
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The invention relates to a wearable electronic device with low frequency noise reduction. A method at a wearable electronic device has: a first electro-acoustic input transducer and a second electro-acoustic input transducer arranged to pick up a first acoustic signal and convert the first acoustic signal to a first microphone signal and second microphone signal; and a third electro-acoustic input transducer arranged to pick up a second acoustic signal and convert the second acoustic signal to a third microphone signal; and a processor. The method comprises: generating a beamformed signal based on the first microphone signal and the second microphone signal; estimating a first frequency value representing a fundamental frequency in one or more of: the first microphone signal, the second microphone signal and the third microphone signal; configuring a first filter with one or more passbands at one or more integer multiples of the first frequency value and one or more stop bands adjacent the one or more stop bands; and filtering, using the first filter, one or more of: the first microphone signal, the second microphone signal and the beamformed signal.
Description
technical field [0001] The present application relates to wearable electronic devices, and in particular, to wearable electronic devices with reduced low frequency noise. Background technique [0002] Wearable electronic devices, such as headsets used to communicate with remote electronic devices, may include a pair of small speakers that are positioned in earpieces worn by the wearer in different ways depending on the configuration of the headset. The wearer may be a user of the wearable electronic device. [0003] The headset picks up an acoustic signal including the wearer's voice through a first electroacoustic input transducer (such as a microphone) for transmission to a remote electronic device, and emits a signal from an electroacoustic output transducer (such as a small speaker) The acoustic signal of a signal sent by a remote electronic device. [0004] The headset may have a first mode, wherein the headset is used as a headset for telecommunications. Headphones ...
Claims
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IPC IPC(8): H04R1/10H04R3/00G10L21/0216
CPCH04R1/1083H04R3/00G10L21/0216G10L2021/02166H04R1/326H04S7/306G10K11/17875G10K11/17854G10K2210/1081G10K2210/3026G10K2210/3028G10L25/18G10L25/78H04R1/406H04R3/005H04R3/04
Inventor 西德塞尔·马里·诺霍尔姆
Owner GN AUDIO AS