How to distinguish the quality of the walkie-talkie according to the sound quality of the walkie-talkie?

Date:Nov 26, 2020

  The acoustic electromagnetic energy transmitted by the Ecome wireless  walkie-talkie is subjected to electromagnetic induction, piezoelectric or electrostatic action, which makes the speaker cone or diaphragm vibrate and form a resonance phenomenon (resonance) with the surrounding gas to make a sound. Simply put, an audio speaker is a transducer device that converts the network signal of the Ecome wireless walkie-talkie into a sound data signal. Therefore, when we distinguish the sound quality of Ecome wireless walkie-talkies, we can refer to these aspects of the audio speaker:

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The characteristic impedance is the characteristic impedance value of the radio speaker on both sides of the voice coil under a special output power. The characteristic impedance value of the wireless radio speaker is mainly 4, 5, 6, 8, 16, 32 ohms, etc. When the audio speaker operates with this characteristic impedance value, the highest power can be obtained。

Pure tone refers to the positive data signal of an audio speaker with a special operating frequency within the scope of additional output power and additional operating frequency. It is also a crucial technical indicator to clarify the tone of the wireless intercom audio speaker. Generally speaking, audio speakers will not have the noise of other mechanical equipment or the sound of ringing and garbage. However, due to the long-term nature of production and processing in some small factories or studios, most audio speakers will have timbre defects.

Usually the working frequency range of professional  Ecome wireless walkie-talkies is divided into VHF: 136-174MHz; UHF: 400-470MHz. Because of the high density of housing construction in big cities and the high requirements for electromagnetic wave penetration, the use of U-segment: 400-470MHz frequency band  Ecome wireless walkie-talkies can better meet the requirements. For long-distance Ecome wireless walkie-talkies in wide areas such as plains or sea levels, electromagnetic waves with strong diffraction capabilities are required. V-segment (136-174MHz) Ecome wireless walkie-talkies are also proposed.

The non-linear distortion of the wireless radio speaker is divided into three types: harmonic distortion, intermodulation distortion and transient intermodulation distortion. Among them, harmonic distortion refers to the distortion caused by the addition of high-order harmonic components that the original data signal does not have in the sound playback. Therefore, the harmonic distortion is mainly formed at low frequencies, especially at the resonance frequency. In addition, intermodulation distortion mainly interferes with the tonal level of the sound. Transient intermodulation distortion refers to the filling capacitor introduced in the low frequency increase when the amplifier circuit inputs the pulse data signal, because the capacitor delays the negative reaction, and then overloads the input stage instantaneously to form transient intermodulation distortion.

The extra output power of the wireless intercom audio speaker refers to the normal operating output power of the audio speaker. During long-term operation of the audio speaker, only under this premise can it be ensured that it is not damaged. This involves a maximum input peak output power, that is, the maximum power that the audio speaker can bear. When a stable working voltage is applied to the input end of the audio speaker of the wireless intercom, the sound pressure level of a certain point on the axis of the audio speaker will change with the operating frequency.

Therefore, when we buy a Ecome wireless walkie-talkie, if we want to get a clearer, louder, and superior sound effect, we need to pay special attention to whether the audio speaker quality of the Ecome wireless walkie-talkie is good enough. In addition, these are not the only ways to determine the quality of the Ecome walkie-talkie with regard to the sound quality of the Ecome walkie-talkie. It can also be determined by other factors of the Ecome walkie-talkie, such as the sensitivity of the Ecome walkie-talkie, the selection of all the accessories of the product manufacturer, and so on.