What indicators are the performance of TWS Bluetooth earphones speaker measured by

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What indicators are the performance of TWS Bluetooth earphones speaker measured by

2017-10-11 16:29:59

The performance of TWS Bluetooth earphones speaker is mainly measured by the following indicators:

1. Rated power (W)d

There are many kinds of distortion of TWS Bluetooth earphones speaker, common harmonic distortion (mostly caused by the uneven magnetic field of the speaker and distortion of the vibration system, often generated at low frequencies), intermodulation distortion (because two signals of different frequencies are added to the speaker at the same time) , The sound quality degradation caused by mutual modulation) and transient distortion (because the inertia of the vibration system cannot follow the change of the signal, which causes signal distortion) and so on. Harmonic distortion refers to the addition of harmonic components that are not in the original signal during playback. The harmonic distortion of the speaker comes from the non-uniform magnetic field of the magnet, the characteristics of the diaphragm, and the displacement of the voice coil. At present, the harmonic distortion index of better speakers is not more than 5%.

2. The sensitivity of the TWS Bluetooth earphones speaker(dB/W)

The sensitivity of the TWS Bluetooth earphones speaker usually refers to the sound pressure measured at 1m in front of the speaker axis when the input power is 1W noise voltage. Sensitivity is a measure of whether the speaker can reproduce the details in the audio signal in full. The higher the sensitivity, the speaker's response to all details in the audio signal. As a Hi-Fi speaker, the sensitivity should be greater than 86dB/W.

3.The directivity of the TWS Bluetooth earphones speaker

Headphone speakers have different sound pressure frequency characteristics for radiation in different directions. This characteristic is called the directivity of the speaker. It is related to the caliber of the loudspeaker. The directivity is sharp when the caliber is large, and the directivity is wide when the caliber is small. Directivity is also related to frequency. Generally speaking, there is no obvious directivity for low frequency signals below 250 Hz. It has obvious directivity to high frequency signals below 1.5kHz.

TWS Bluetooth earphones speaker is small, light weight design, built-in amplifier, diversity wireless receiver only 3.6kg, easy to carry 2 easy to install 3: with external input port for BGM, etc. 4: TWS Bluetooth earphones speaker can be installed WX-4800, easy to carry 5: The TWS Bluetooth earphones speaker can also be used outdoors (when connected to a DC12V external power supply, even if there is no broadcasting equipment, as long as there is one unit for wireless broadcasting! The built-in diversity wireless receiver weighs about 3.6kg, and it is convenient to carry and carry. Move and use in multiple rooms. The 12cm cone-shaped full-range speaker with loud sound and the 10W output amplifier that can give full play to the large volume are used in multiple rooms. Although it is a small machine, it has a clear sound amplification effect. It has a rich input port such as BGM and TWS Bluetooth earphones. The TWS Bluetooth earphones speaker can also be connected to a portable DV12V battery using tape, CD, MD player, etc., and a microphone stand can also be used outdoors, which can be simply installed on the wall or ceiling.

TWS Bluetooth earphones

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