I certainly excited about Fred's exit - focus on the company he can make a few billion on
anyway EM has produced more patents - published on 23rd Jun:
Abstract: The invention discloses a sound generation method, device and equipment. The invention relates to the field of digital sound generation and is used to solve the problem in the prior art that the sound on any frequency band cannot be accurately adjusted according to user needs, resulting in poor sound quality. Including: obtaining the target EQ curve information; based on the EQ curve information, determining the functional relationship between the proportion of the number of working units of the target object and the frequency; based on the functional relationship, EQ adjustment is performed on the input audio signal, and the EQ adjusted audio signal is passed through The DSR algorithm generates a pulsed digital signal, which emits a sound wave. The digital sound chip can accurately emit the sound of any frequency, fully matches the EQ curve input by the user, and has excellent performance; and adjusts the EQ of the entire EQ curve based on the functional relationship, and can realize individual adjustment for each frequency. Control the increase or decrease of the loudness in different frequency bands to achieve accurate playback of sounds at different frequencies, thereby improving sound quality.
and another
Abstract: The invention discloses a pixel sound unit, a manufacturing method thereof, and a digital sound chip, which relate to the technical field of digital sound chips and solve the problem of back cavity pressure leakage. The pixel sound unit includes a substrate, an electrode plate, a dielectric layer and a vibrating plate stacked in sequence, an air back cavity is formed between the electrode plate and the base, there is a gap between the electrode plate and the vibrating plate, and a hole for communicating with the air is arranged on the electrode plate. The rear cavity and the through hole in the gap, the vibrating plate includes a fixed part, a cantilever and a vibrating membrane connected in sequence from outside to inside, and the distance between the electrode plate and the vibrating membrane is smaller than the thickness of the cantilever. The digital sounding chip includes the pixel sounding unit mentioned in the above technical solution, and the manufacturing method of the pixel sounding unit includes the pixel sounding unit mentioned in the above technical solution.
(20min delay)