Directional recording method and apparatus, and recording device

Abstract

The invention discloses a directional recording method and apparatus, and a recording device. The recording device acquires a voice of a target sound source through a microphone array of the recording device. The method comprises the steps of generating an initial pickup wave beam through a wave beam forming algorithm, wherein the initial pickup wave beam points to the target sound source; recording an initial direction of the initial pickup wave beam; and detecting that the direction of the recording device is changed, and adjusting the initial pickup wave beam according to the direction change of the recording device to obtain a target pickup wave beam, wherein the target pickup wave beam points to the target sound source. Compared with the prior art, the directional recording method and apparatus and the recording device provided by embodiments of the invention have the advantages that the direction of the pickup wave beam can be adjusted according to the direction change of the recording device, so that the pickup wave beam is ensured to always point to the target sound source and the poor recording effect caused by the direction change of the recording device is avoided.

Description

technical field [0001] The invention relates to the field of signal processing, in particular to a directional recording method, device and recording equipment. Background technique [0002] In order to meet the recording requirements in noisy environments, the application range of recording equipment with directional recording function is becoming more and more extensive. A recording device with a directional recording function is usually equipped with a microphone array composed of multiple microphones. When the recording device is recording, it can pick up sound signals through each microphone in the microphone array, and use the beam forming (Beam Forming) algorithm to separate Adjust the phase and amplitude of the sound signal picked up by each microphone, so that the final formed sound signal can have a higher signal-to-noise ratio in a specific direction range, so as to preserve the sound signal propagating in a specific direction range and attenuate or shield it The...

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a directional recording method, device, and recording equipment to solve the problem that the existing directional recording method easily leads to poor recording effect when the orientation of the recording equipment changes

Images