Wireless loudspeaker suppliers generally present the frequency response of their products that, regrettably, doesn't necessarily tell you a lot about the quality of sound. In order to help you make a smarter buying decision, I'll make clear what this specification means and the way to understand it. This ideally will ensure you will get the perfect cordless loudspeakers for your project.
A set of wireless loudspeakers are only able to work inside of a specific frequency range. Any signals outside of this range will be removed. Consequently the frequency response gives an important clue about whether or not a specific set of cordless loudspeakers may be suitable for a certain use. Normally a lower and upper frequency are given, for instance 20 Hz - 20 kHz. This particular specification shows that the wireless loudspeakers are able to transmit and then reproduce audio inside of that frequency range. You could be lured to select a set ofcordless loudspeakers that offers the greatest frequency response. On the other hand, there is certainly more to knowing a wireless loudspeakers's performance than merely knowing this simple range.
A large frequency response doesn't imply the wireless speakers offer good audio quality. For instance a set of wireless loudspeakers which has a frequency response between 30 Hz and 15 kHz may sound a lot better than another set with a response between 10 Hz and 30 kHz. Also, every supplier, it seems, implements a different procedure for specifying the lowest and highest frequency of their cordless speakers. The conventional convention is to display the frequency range inside of which the sound pressure level of the speakers is going to drop no more than 3 dB from the nominal level.
Then again, a number of companies push this standard to the limit and tend to list an upper frequency where the cordless speakers are going to hardly create a beep anymore. Furthermore, merely taking a look at these 2 figures isn't going to say much about the linearity of the frequency response. Therefore it is best to have a complete frequency response graph. This sort of graph is going to show if there are any sort of substantial peaks and / or valleys inside the working frequency range. Peaks and valleys could potentially cause colorization of the audio. Ideally the sound pressure level of the wireless speakers should be linear throughout the entire working range.
Primarily contemporary cordless speakers which use digital or "Class-D" amplifiers will show changes in the frequency response with different driver loads. The reason is the fact that Class-D amplifiers use switching FETs as the power stage that create a lot of switching components. These components are eliminated using a filter which is part of the internal speaker amplifier. A changing loudspeaker driver load is going to affect the filter response to a point. Commonly the lower the speaker driver impedance the lower the maximum frequency of the built-in amplifier. Moreover, the linearity of the amplifier gain will be determined by the driver load.
Some of the most recent digital amps feed back the music signal after the lowpass filter so as to compensate for this drawback and also to make the frequency response of the amplifier independent of the attached driver load. On the other hand, if the amplifier is not constructed properly, this sort of feedback may cause instability and also lead to loud noise being created by the amplifier if specific speakers are connected. Other amplifiers utilize transformers and provide outputs for different speaker loads. In addition to improving upon the frequency response of the amp, this approach generally also improves the amplifier efficiency.
A set of wireless loudspeakers are only able to work inside of a specific frequency range. Any signals outside of this range will be removed. Consequently the frequency response gives an important clue about whether or not a specific set of cordless loudspeakers may be suitable for a certain use. Normally a lower and upper frequency are given, for instance 20 Hz - 20 kHz. This particular specification shows that the wireless loudspeakers are able to transmit and then reproduce audio inside of that frequency range. You could be lured to select a set ofcordless loudspeakers that offers the greatest frequency response. On the other hand, there is certainly more to knowing a wireless loudspeakers's performance than merely knowing this simple range.
A large frequency response doesn't imply the wireless speakers offer good audio quality. For instance a set of wireless loudspeakers which has a frequency response between 30 Hz and 15 kHz may sound a lot better than another set with a response between 10 Hz and 30 kHz. Also, every supplier, it seems, implements a different procedure for specifying the lowest and highest frequency of their cordless speakers. The conventional convention is to display the frequency range inside of which the sound pressure level of the speakers is going to drop no more than 3 dB from the nominal level.
Then again, a number of companies push this standard to the limit and tend to list an upper frequency where the cordless speakers are going to hardly create a beep anymore. Furthermore, merely taking a look at these 2 figures isn't going to say much about the linearity of the frequency response. Therefore it is best to have a complete frequency response graph. This sort of graph is going to show if there are any sort of substantial peaks and / or valleys inside the working frequency range. Peaks and valleys could potentially cause colorization of the audio. Ideally the sound pressure level of the wireless speakers should be linear throughout the entire working range.
Primarily contemporary cordless speakers which use digital or "Class-D" amplifiers will show changes in the frequency response with different driver loads. The reason is the fact that Class-D amplifiers use switching FETs as the power stage that create a lot of switching components. These components are eliminated using a filter which is part of the internal speaker amplifier. A changing loudspeaker driver load is going to affect the filter response to a point. Commonly the lower the speaker driver impedance the lower the maximum frequency of the built-in amplifier. Moreover, the linearity of the amplifier gain will be determined by the driver load.
Some of the most recent digital amps feed back the music signal after the lowpass filter so as to compensate for this drawback and also to make the frequency response of the amplifier independent of the attached driver load. On the other hand, if the amplifier is not constructed properly, this sort of feedback may cause instability and also lead to loud noise being created by the amplifier if specific speakers are connected. Other amplifiers utilize transformers and provide outputs for different speaker loads. In addition to improving upon the frequency response of the amp, this approach generally also improves the amplifier efficiency.
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