(Summary description)The main performance indicators of SIP voip speakers are: sensitivity, frequency response, rated power, rated impedance, directivity and distortion and other parameters.
(Summary description)The main performance indicators of SIP voip speakers are: sensitivity, frequency response, rated power, rated impedance, directivity and distortion and other parameters.
The main performance indicators of SIP voip speakers are: sensitivity, frequency response, rated power, rated impedance, directivity and distortion and other parameters.
1. Rated power
The power of SIP voip speaker is divided into nominal power and maximum power. Nominal power refers to the maximum input power allowed by the speaker within the rated undistorted range, and the power marked on the speaker's trademark and technical manual is the power value. The maximum power refers to the peak power that the speaker can withstand at a certain moment.
2. Rated impedance
The impedance of a SIP voip speaker is generally related to frequency. Rated impedance refers to the impedance measured from the speaker input when the audio frequency is 400Hz. It is generally 1.2 to 1.5 times the DC resistance of the voice coil.
3. Frequency response
When an audio signal of the same voltage but different frequencies is applied to a SIP voip speaker, the sound pressure generated by it will change. Generally, the sound pressure generated in the middle audio frequency is larger, and the sound pressure generated in the low audio frequency and high audio frequency is smaller. When the sound pressure drops to a certain value of the mid-range audio frequency range, called the frequency response characteristics of the speaker.
4. Distortion
The phenomenon that SIP voip speaker cannot reproduce the original sound realistically is called distortion. There are two types of distortion: frequency distortion and nonlinear distortion. Frequency distortion is caused by the strong playback of signals of some frequencies and weaker playback of signals of other frequencies. The distortion destroys the original ratio of high and low sound levels and changes the original sound. The nonlinear distortion is caused by the vibration of the speaker vibration system and the fluctuation of the signal are not completely consistent.
5. Pointing characteristics
It is used to characterize the sound pressure distribution characteristics radiated by SIP voip speakers in all directions of space. The higher the frequency, the narrower the directivity, and the larger the paper cone, the stronger the directivity.
