2 results about "Sidetone" patented technology

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.