Hytera Communications Corporation Limited

Ni Huang

Chia Han Siong Samuel

Hong Du

Yongdong Wang

Cunhao Gao

Guangbin Huang

Dawu He

Heshan Yang

Dejun Deng

Provided are a voice communication method and system under a broadband and narrow-band intercommunication environment. The method comprises: when a broadband terminal calls a narrow-band terminal, the broadband terminal executing a reducing operation on an energy amplitude of voice data to obtain a reduced voice data packet, and sending the reduced voice data packet to the narrow-band terminal such that the narrow-band terminal plays the reduced voice data packet; and when the narrow-band terminal calls the broadband terminal, the broadband terminal receiving a voice data packet, and executing an amplification operation on an energy amplitude of the voice data packet to obtain an enlarged voice data packet, and the broadband terminal playing the enlarged voice data packet. The present application can solve the problem of voice size inconsistency between a broadband terminal and a narrow-band terminal, thereby enhancing the usage experience for a user.

Voice communication method and system under a broadband and narrow-band intercommunication environment

Disclosed in the present application are a method for improving performance of a low-intermediate frequency receiver, a storage medium, and a receiver. The method comprises: selecting a local oscillator signal from a preset local oscillator frequency set as an initial local oscillator signal to perform frequency mixing processing on an input signal, so as to obtain a low-intermediate frequency signal comprising a low-intermediate frequency useful signal and a low-intermediate frequency interference signal; determining whether an energy ratio of the low-intermediate frequency interference signal to the low-intermediate frequency useful signal is greater than a first preset ratio; and if the energy ratio is greater than the first preset ratio, selecting another local oscillator frequency from the preset local oscillator frequency set as the current local oscillator signal to process the input signal. In this way, the present application can improve the adjacent channel selectivity of a low-intermediate frequency receiver.

Method for improving performance of low-intermediate frequency receiver, storage medium, and receiver

An acoustic feedback detection method and device. According to the method, whether acoustic feedback occurs is determined based on a frequency characteristic of an acoustic feedback signal. Specifically, a judgment value is determined using a power peak value and an average peak value, and it is determined whether acoustic feedback occurs in a signal based on a magnitude of the judgment value and a duration of the power peak value. In this case, whether acoustic feedback occurs can be determined based on the frequency characteristic of the signal.

Sound feedback detection method and device

A method and device for adaptively adjusting sound effect, and the method comprises: obtaining an energy value of the current ambient noise; receiving a first trigger instruction and adjusting the current output volume based on the energy value of the current ambient noise; while judging that the energy value of the current ambient noise is bigger than a first threshold, processing treble enhancement; while judging that the energy value of the current ambient noise is less than a second a sound threshold, processing bass enhancement. By collecting the voice data and detecting the speech activity on the voice data, when the first trigger instruction is received, the method can adjust the current volume and adjust the frequency response by the treble enhancement or the bass enhancement based on the energy value of the current ambient noise, thereby obtaining the better sound effect and easy to achieve.

Growing community of inventors

Guangdong, China

Ni Huang