5results about How to "Improve voice quality" patented technology

This application provides a device control method, a recognition model training method, and related devices. The device control method includes: acquiring speech to be processed emitted by a target user; inputting the speech to be processed into a recognition model to obtain recognition information output by the recognition model, wherein the recognition information includes control speech and a target speech channel, or the recognition information includes control speech, a target speech channel, and a time-frequency masking code, wherein the target speech channel is a speech transmission channel with a signal-to-noise ratio greater than a signal-to-noise ratio threshold, and the time-frequency masking code is used for sound source localization of the target user; and waking up or controlling the device's functions based on the recognition information. This application improves the accuracy of recognizing control information in speech.

The application discloses a microphone array sound pickup method, electronic equipment and computer readable storage medium. The sound pickup method comprises the following steps: fixed beam forming is performed on a voice signal received by a microphone array, and a beam forming direction of the microphone array is pointed to an estimated expected direction of arrival; blocking processing is performed on the processed voice signal, so that the voice signal from the expected direction of arrival is blocked, and only the voice signal from a non-expected direction of arrival is reserved; the processed signal is used as a reference signal, a first filter is used to filter out the signal from the non-expected direction of arrival and reserve the signal from the expected direction of arrival; and an update factor of the first filter is calculated according to the following formula (I), wherein the update factor of the first filter of the mth microphone channel is SNR f,d (ω, l) is Y f,d (ω, l) is a signal-to-noise ratio of Y f,d (ω, l) is a delay signal obtained by delaying the signal processed in the step S1, SNR m (ω, l) is a signal U m (ω, l) is a signal-to-noise ratio of Y. The application further improves voice quality.

The invention relates to a voice signal processing method and device, electronic equipment and a storage medium. The method comprises the steps that content coding features, rhythm coding features and timbre coding features are acquired, the content coding features are used for representing the content of a voice signal, the rhythm coding features are used for representing the rhythm of the voice signal, and the timbre coding features are used for representing the timbre of the voice signal; content context construction is carried out on the content coding features based on the tone coding features and the rhythm coding features, and content context features are obtained; and performing voice reconstruction according to the timbre coding feature, the rhythm coding feature and the content context feature to obtain a target reconstructed voice signal. According to the technical scheme provided by the invention, high-quality speech reconstruction can be provided at a low code rate.

This disclosure provides a causal adaptive single-channel speech denoising method and apparatus. The method includes: acquiring noise information in a first time period and noisy speech information in a second time period; processing the noise information and noisy speech information to obtain a noise correlation matrix and a speech correlation matrix; performing generalized eigenvalue decomposition on the noise correlation matrix and the speech correlation matrix to obtain multiple initial feature vectors; generating a target filter vector based on the multiple initial feature vectors and the filter function of the initial filter; and generating enhanced target output speech information based on the target filter vector and the noisy speech information.

The application discloses a kind of regulation voice data effective information enhancement method and system, and steps successively include: regulation voice signal separation, regulation voice signal noise reduction and regulation voice signal enhancement;Regulation voice signal separation utilizes the characteristics of different regulation voice center frequency difference, phase difference etc., and the regulation voice of multiple interweaves is separated into effective single voice signal;Regulation voice signal noise reduction extracts pure regulation voice signal, and filters out background noise and the process noise brought by deinterleaving;Regulation voice signal enhancement carries out lossless enhancement to the phase-frequency characteristics of voice signal;The application in the complex air traffic control environment that multiple people speak simultaneously, there is weak effective signal or background noise interference, maintains stable high recognition rate, reduces error and improves the overall efficiency of system.