Pickup and noise reduction method for built-in earphone of transmitting pickup microphone

A microphone, built-in technology, applied in speech analysis, instruments, etc., to achieve the effect of signal-to-noise ratio enhancement, good attenuation effect, and deep noise reduction effect

Active Publication Date: 2020-03-27
SHENZHEN SWETZ SOUND TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology allows for better sound quality when speaking over loudspeakers without affecting any other people around them or anything else nearby. By placing these speakers within one chamber where they are hidden behind another wall made up of materials like rubber covered glass windows, background sounds can be blocked out while still allowing speech signals to pass through. These walls help reduce unwanted noises caused by outside sources such as rainbows, glare, etc., which could interfere with conversations between users who want their own voices heard clearly even if there's nothing nearer than what was intended.

Problems solved by technology

This patents describes different types of existing sound devices used for reducing background sounds like loudspeakers or bone conduction systems. However none provide an effective way to reduce unwanted signals such as interference caused by external sources like weather conditions or environmental factors while still providing reliable communication over noisy environments where voices can be heard clearly through speakers.

Method used

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  • Pickup and noise reduction method for built-in earphone of transmitting pickup microphone
  • Pickup and noise reduction method for built-in earphone of transmitting pickup microphone
  • Pickup and noise reduction method for built-in earphone of transmitting pickup microphone

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Embodiment 1

[0088] The embodiment of the present invention provides a sound pickup and noise reduction method for an earphone with a built-in microphone for sound pickup, which aims to solve the problem of the noise reduction function of the microphone for sound pickup. Design, through algorithms such as channel mapping and digital filtering to realize the earphone of speech enhancement.

[0089] Such as figure 1 As shown, the present invention provides a method for sound pickup and noise reduction of a built-in earphone with a microphone for sending and picking up sound, wherein the microphone for picking up and sending speech is installed inside the earphone (the microphone for sending and picking up sound adopts a directional microphone), and the The voice-sending microphone adopts a contact-type closed structure, and the earphones with enhanced voice-sending are realized through algorithms such as machine learning and digital filtering.

[0090] The earphone with built-in microphone fo

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PUM

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Abstract

The invention discloses a pickup and noise reduction method for a built-in earphone of a transmitting pickup microphone, and belongs to the technical field of earphones. According to the a built-in earphone of a transmitting pickup microphone, the transmitting and pickup microphone is arranged in an independent sealed cavity in the inner wall of the earphone, and the pickup and noise reduction method specifically comprises the following steps: (1) preprocessing a voice signal, including anti-aliasing, A/D conversion, pre-emphasis and central wave elimination processes; (2) channel mapping processing, including four stages of LPC-based feature extraction, channel mapping, speech synthesis and de-emphasis; and (3) voice focusing enhancement processing, wherein the voice focusing enhancementprocessing comprises power spectrum estimation and amplitude attenuation processing, voice centering, high-pass filtering, high-frequency enhancement, dynamic compression and later-stage enhancement processing, and pickup and noise reduction are realized. According to the pickup and noise reduction method disclosed by the invention, the definition, intelligibility and the like of voice transmission on a full frequency band are obviously enhanced; AND the structure is simple and the cost is low.

Description

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Claims

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Application Information

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Owner SHENZHEN SWETZ SOUND TECH CO LTD
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