5 results about "Sidetone" patented technology

The invention provides a fire-fighting telephone audio signal processing circuit and processing method, and relates to the technical field of communication equipment, and the circuit comprises a signal processing module which is configured to process a local audio signal inputted from a local audio input port, generate a first processing signal with a phase opposite to that of the local audio signal, and send the first processing signal to the local audio input port; the first processing signal is sent to the bus port; receiving a mixed signal from a bus port, wherein the mixed signal comprises a forward audio signal from a far end and the first processing signal looped back through the bus; performing offset processing on the mixed signal based on a reference signal of the first processing signal so as to suppress the first processing signal component in the mixed signal, thereby outputting an audio signal of which the sidetone is suppressed at a far-end audio output port; and the parameter dynamic adjustment module is connected to the signal processing module and is used for dynamically adjusting the offset processing parameters according to the characteristics of the signal or the mixed signal of the far-end audio output port so as to optimize the sidetone suppression effect.

The invention discloses an interference processing method, system and equipment based on carrier phase reference and a medium, and the method comprises the steps: constructing a reference phase of each sidetone signal based on the phase of a main carrier signal and design parameters of a detector beacon signal; constructing a reference model of each sidetone signal based on the reference phase of each sidetone signal, and calculating a cross-correlation residual phase of each sidetone signal according to the reference model of each sidetone signal; based on the cross-correlation residual phase of each sidetone signal, a group delay observed quantity is calculated. According to the method, the problem that the precision of a traditional algorithm is reduced in a low signal-to-noise ratio and frequency fluctuation scene can be solved, the accuracy of interference time delay observed quantity is improved, and the high-precision measurement requirement of a detector track is met.

The application discloses a high-order overtone DOR measurement method, system, device and medium, relates to the technical field of information acquisition and processing, and comprises the following steps: performing local correlation processing on a carrier channel signal acquired through a satellite antenna to obtain interference phases in multiple first integral periods, and determining a first phase polynomial of a carrier model based on all the interference phases; determining a high-order overtone model based on the phase polynomial of the carrier model; correcting multiple high-order overtone signals acquired through the satellite antenna based on the high-order overtone model; determining a residual phase corresponding to each high-order overtone signal through the multiple corrected high-order overtone signals; and determining a DOR time delay observation corresponding to each high-order overtone signal through a multi-side tone DOR time delay calculation method based on the residual phase corresponding to each high-order overtone signal. The application can realize acquisition of a DOR measurement time delay observation, and has a wide application prospect in the field of deep space interferometric measurement.

The utility model relates to earphone loudspeaker technical field discloses a kind of independent cavity helmet earphone loudspeaker assembly of side tone sound hole, comprising: loudspeaker back cover;Loudspeaker yoke, install in the loudspeaker back cover;Loudspeaker front cover support, with the loudspeaker yoke cooperation to form a closed independent sound cavity;Wherein, at least one sound leakage hole is set on the circumference of the loudspeaker back cover;The component further includes a set of sealing mechanism for sealing the independent sound cavity, and the sealing mechanism includes the sealing pad between the inner peripheral wall of the loudspeaker yoke and the lower side of the loudspeaker front cover support.It is positioned quickly and accurately in the utility model that sealing pad is realized by block and slot structure, and the accurate alignment of sound cavity is ensured using positioning rod and positioning seat.This scheme simplifies assembly, reduces artificial skill requirement, solves the problem of unstable performance caused by assembly error through reliable sealing, and guarantees the consistency of high-quality sound effect.

A game processing unit 110 generates an image of a space in which a player character is present. A sidetone control unit 124 has a function of controlling sidetone in a headset. The sidetone control unit 124 controls the sidetone in the headset on the basis of behavior of the player character.