Noise reduction device for audio equipment capable of achieving two-way noise reduction

Patent metadata

Field	Value
Publication number	US-12579992-B2
Application number	US-202418583608-A
Country	US
Kind code	B2
Filing date	Feb 21, 2024
Priority date	Mar 28, 2023
Publication date	Mar 17, 2026
Grant date	Mar 17, 2026

Abstract

A noise reduction device for audio equipment includes a microprocessor, a digital signal processor, a host computer interface and an audio terminal. The digital signal processor is electrically connected to the microprocessor. The digital signal processor includes an uplink signal processing module and a downlink signal processing module. The host computer interface is configured to connect to a host computer. The host computer interface is electrically connected to the microprocessor. The audio connection terminal is configured to connect to the audio equipment. The audio connection terminal is electrically connected to the microprocessor. The uplink signal processing module is configured to perform noise reduction processing on an uplink signal of the audio equipment. The downlink signal processing module is configured to perform noise reduction processing on a downlink signal of the host computer.

First claim

What is claimed is:

1 . A noise reduction device for audio equipment, comprising:
a microprocessor; a digital signal processor electrically connected to the microprocessor; the digital signal processor comprising an uplink signal processing module and a downlink signal processing module; a host computer interface configured to connect to a host computer; the host computer interface being electrically connected to the microprocessor; and an audio connection terminal configured to connect to the audio equipment; the audio connection terminal being electrically connected to the microprocessor; the uplink signal processing module being configured to perform noise reduction processing on an uplink signal of the audio equipment; the downlink signal processing module being configured to perform noise reduction processing on a downlink signal of the host computer; wherein the audio connection terminal comprises a first audio connection terminal; the audio equipment comprises a TRS-type terminal earphone and a Bluetooth earphone; the first audio connection terminal is configured to connect to one of the TRS-type terminal earphone and the Bluetooth earphone; when the first audio connection terminal is configured to connect to the TRS-type terminal earphone, the noise reduction device for audio equipment comprises an audio codec, the first audio connection terminal is a TRS-type terminal interface capable of being connected to a TRS-type terminal plug of the TRS-type terminal earphone, and the TRS-type terminal plug is connected to the TRS-type terminal interface, so that the TRS-type terminal earphone is electrically connected to the audio codec, and the audio codec is electrically connected to the microprocessor; when the first audio connection terminal is configured to connect to the Bluetooth earphone, the noise reduction device for audio equipment comprises a wireless transceiver, the wireless transceiver is the first audio connection terminal, the Bluetooth earphone is communicatively connected to the wireless transceiver, and the wireless transceiver is electrically connected to the microprocessor.

2 . The noise reduction device for audio equipment according to claim 1 , wherein the audio connection terminal comprises a second audio connection terminal; the second audio connection terminal is a USB interface; the audio equipment comprises a USB earphone; and the USB interface is configured to connect to the USB earphone.

3 . The noise reduction device for audio equipment according to claim 2 , wherein the USB earphone comprise a USB wired earphone and a USB wireless earphone; the USB interface is configured to be connected to the USB wired earphone or the USB wireless earphone; the USB wireless earphone comprises an adapter, the USB interface is configured to be connected to the adapter, and the USB wireless earphone is communicatively connected to the adapter.

4 . The noise reduction device for audio equipment according to claim 1 , wherein the microprocessor comprises an MCU processing chip; the MCU processing chip has an I2S0 pin, an I2S1 pin and an I2C pin; the digital signal processor comprises a digital signal processing chip; the I2S0 pin, the I2S1 pin and the I2C pin are all electrically connected to the digital signal processing chip; the digital signal processing chip comprises the uplink signal processing module and the downlink signal processing module.

5 . The noise reduction device for audio equipment according to claim 4 , wherein the I2S0 pin and the I2S1 pin are both bidirectionally connected to the digital signal processing chip.

6 . The noise reduction device for audio equipment according to claim 4 , wherein the MCU processing chip comprises an I2S2 pin; the wireless transceiver comprises an MCU unit; the audio codec comprises an audio codec chip; the I2S2 pin is electrically connected to the audio codec chip or the MCU unit.

7 . The noise reduction device for audio equipment according to claim 6 , wherein the audio codec chip has an L-OUT pin, an R-OUT pin and a MIC-IN pin; the TRS-type terminal earphone comprises a left speaker, a right speaker and a microphone; when the TRS-type terminal earphone is connected to the TRS-type terminal interface, the left speaker is configured to electrically connect to the L-OUT pin, the right speaker is configured to electrically connect to the R-OUT pin, and the microphone is configured to electrically connect to the MIC-IN pin.

8 . The noise reduction device for audio equipment according to claim 4 , further comprising a noise reduction microphone electrically connected to the digital signal processing chip, and the digital signal processing chip being configured to perform noise reduction processing on voices in an external environment picked up by the noise reduction microphone.

9 . A noise reduction device for audio equipment, comprising:
a microprocessor; a digital signal processor electrically connected to the microprocessor; the digital signal processor comprising an uplink signal processing module and a downlink signal processing module; a host computer interface configured to connect to a host computer; the host computer interface being electrically connected to the microprocessor; and an audio connection terminal configured to connect to the audio equipment; the audio connection terminal being electrically connected to the microprocessor; the uplink signal processing module being configured to perform noise reduction processing on an uplink signal of the audio equipment; the downlink signal processing module being configured to perform noise reduction processing on a downlink signal of the host computer; wherein the audio connection terminal comprises a second audio connection terminal; the second audio connection terminal is a USB interface; the audio equipment comprises a USB earphone; and the USB interface is configured to connect to the USB earphone; wherein the noise reduction device further comprises a display module electrically connected to the MCU processing chip; wherein the display module is capable of indicating a currently used path; the noise reduction device for audio equipment has different noise reduction levels; the display module comprises a sliding switch and selection of different noise reduction levels is achieved by operating the sliding switch.

10 . The noise reduction device for audio equipment according to claim 9 , wherein the audio connection terminal comprises a first audio connection terminal; the audio equipment comprises a TRS-type terminal earphone and a Bluetooth earphone; the first audio connection terminal is configured to connect to one of the TRS-type terminal earphone and the Bluetooth earphone;
when the first audio connection terminal is configured to connect to the TRS-type terminal earphone, the noise reduction device for audio equipment comprises an audio codec, the first audio connection terminal is a TRS-type terminal interface capable of being connected to a TRS-type terminal plug of the TRS-type terminal earphone, and the TRS-type terminal plug is connected to the TRS-type terminal interface, so that the TRS-type terminal earphone is electrically connected to the audio codec, and the audio codec is electrically connected to the microprocessor; when the first audio connection terminal is configured to connect to the Bluetooth earphone, the noise reduction device for audio equipment comprises a wireless transceiver, the wireless transceiver is the first audio connection terminal, the Bluetooth earphone is communicatively connected to the wireless transceiver, and the wireless transceiver is electrically connected to the microprocessor.

11 . The noise reduction device fo

Assignees

• Lanto Electronic Ltd

Inventors

• WANG Hui-yu
• Chen Chi-Liang
• Hsu Tsung-Pao
• Chien Jung-Pin

Classifications

• H04R1/1083

  Reduction of ambient noise (active noise reduction per se G10K11/175; protective devices for the ear, e.g. providing acoustic protection A61F11/06) · CPC title

• H04R1/1041

  Mechanical or electronic switches, or control elements (switches in general H01H) · CPC title

• G10L2021/02087

  the noise being separate speech, e.g. cocktail party · CPC title

• H04R5/04

  Circuit arrangements, {e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments (combinations of amplifiers H03F3/68; stereophonic systems H04S)} · CPC title

• G10L21/0208 Primary

  Noise filtering · CPC title