Passive electroacoustic apparatus and its playing method

Abstract

The invention relates to a passive electro-acoustic device and a sound playing method thereof, comprising sound playing equipment and passive earphones. The headphone set has a memory chip that stores electro-acoustic characteristic parameters including frequency response, impulse response, sensitivity, frequency-impedance curve, resonant frequency and maximum sound pressure. The memory chip is connected to the DSP of the playback device, and the DSP reads the digital information about the characteristic parameters of the earphone in the memory chip, compares the audio characteristic parameters of the playback signal and uses the comparison result to adjust the playback signal, and completes the transmission and playback. The advantages of the passive electro-acoustic device and its sound playback method of the present invention are: the DSP of the sound playback equipment processes the sound playback signal according to the audio characteristic parameters stored in the memory chip by the earphone, so that the earphone can achieve the best sound playback effect. For a variety of passive headphones, speakers or speakers. Because there is no other supporting electronic device, the cost is low, the operation is simple and convenient for users, the playback quality is high, and it is completed automatically.

Description

technical field [0001] The invention relates to the technical field of digital audio, in particular to a passive electro-acoustic device and a sound playback method thereof. Background technique [0002] At present, in digital audio products, there is little technological improvement in traditional electro-acoustic devices, and people still use the same loudspeaker design pattern since 1910 (the sound coil is attached to a diaphragm, suspended from a large magnet by strong magnets and metal speakers). In the gap of the magnetic field formed by the frame), the same microphone (dynamic, condenser or ribbon) and the same earphone (also known as an earphone, which is a miniaturized speaker), the basic principle has never changed. Many people have tried to change its performance: for example, headphone sensors. It uses rare elements to make stronger magnets, makes special geometric shapes, extremely thin films and maintains a certain mechanical strength, and uses strict producti...

AI Technical Summary

Problems solved by technology

[0007] a. The measurement parameters are highly specialized and need to be measured in different spaces and environments. The physical parameters and space parameters of the speaker are included in the vibration elimination system at the same time, which increases the complexity and is not easy to meet the requirements at the same time. It is difficult for general users to operate

[0008] b. Not suitable for earphones, only for speakers

Images