When selecting a brand new set of cordless loudspeakers, you probably will take a glimpse at the technical specs. One often found spec is the frequency response. This parameter although critical does not tell the full story regarding how great the loudspeakers are going to sound. You possibly will not fully understand exactly how the frequency response is calculated. I'm going to discuss what precisely this phrase means. Ideally you will be able to make a much more knowledgeable buying decision. A set of cordless loudspeakers are able to only work within the particular frequency range. Any signals outside of this range will be removed. Consequently the frequency response provides a crucial hint pertaining to whether or not a particular set of wireless loudspeakers may be well suited for a certain use. This range is specified by showing 2 frequencies: a lower as well as upper frequency. As an example, the lower frequency may be 20 Hz and the higher frequency 20 kHz. Using this specification it seems like the cordless speakers would be able to operate as a set of HIFI speakers. Yet, there is a lot more to understanding the wireless loudspeakers's functionality than simply considering these numbers.
A set of cordless loudspeakers are able to only function within the particular frequency range. Any signals just outside of this range will be removed. As such the frequency response gives a significant clue about if a certain set of cordless loudspeakers might be appropriate for a particular use. Usually a lower and upper frequency are shown, just like 20 Hz - 20 kHz. This specification suggests that the wireless speakers are able to transmit and then reproduce music inside of this frequency range. You may think the greater the frequency response the better the cordless speakers. That, on the other hand, will not always be the case. You have to look at the specs far more carefully to correctly understand them.
However, the frequency response quite often is used to deceive buyers by stretching out the frequency range a good deal past the range where the cordless speakers still operate correctly and also covers up the reality that the wireless speakers may not be linear. A full frequency response chart, on the other hand, will demonstrate if there are any kind of peaks and valleys and also show how the frequency response is to be understood. Peaks and also valleys might result in colorization of the audio. Ideally the sound pressure level of the wireless speakers should be linear through the entire working range.
Then again, various producers push this standard to the limit and may show an upper frequency where the wireless loudspeakers will hardly generate a beep anymore. Additionally, just examining these 2 numbers does not say a lot about the linearity of the frequency response. Subsequently it is better to have a full frequency response document. This sort of graph is going to reveal whether or not there are any significant peaks and / or valleys within the operating frequency range. You might also desire to ask for a phase response diagram which offers essential hints in regards to the audio quality.
You also need to look at the circumstances under which the frequency response was determined. You normally won't find any details about the measurement conditions, unfortunately, in the producer's data sheet. The fact is that lots of amplifiers which are incorporated into the wireless speakers will function in a different way with different speaker loads. This is mainly because that various loudspeaker loads will cause changes to the behavior of the output power stage of the amp. The frequency response of Class-D amplifiers shows the biggest change with different speaker loads due to the built-in lowpass filter that removes switching noise from the speaker amplifier's signal. A varying loudspeaker driver load will impact the filter response to some degree. Usually the lower the speaker driver impedance the lower the highest frequency of the built-in amplifier. Moreover, the linearity of the amplifier gain is going to depend on the driver load.
Several amplifier topologies provide a mechanism to compensate for variations in the amplifier gain with different loudspeaker loads. One example of these approaches employs feedback. The amplifier output signal after the internal lowpass is input to the amplifier input for comparison. If not developed properly, this method might cause instability of the amplifier though. Different amplifiers utilize transformers and provide outputs for several loudspeaker loads. Apart from improving the frequency response of the amplifier, this approach typically furthermore improves the amplifier efficiency.
A set of cordless loudspeakers are able to only function within the particular frequency range. Any signals just outside of this range will be removed. As such the frequency response gives a significant clue about if a certain set of cordless loudspeakers might be appropriate for a particular use. Usually a lower and upper frequency are shown, just like 20 Hz - 20 kHz. This specification suggests that the wireless speakers are able to transmit and then reproduce music inside of this frequency range. You may think the greater the frequency response the better the cordless speakers. That, on the other hand, will not always be the case. You have to look at the specs far more carefully to correctly understand them.
However, the frequency response quite often is used to deceive buyers by stretching out the frequency range a good deal past the range where the cordless speakers still operate correctly and also covers up the reality that the wireless speakers may not be linear. A full frequency response chart, on the other hand, will demonstrate if there are any kind of peaks and valleys and also show how the frequency response is to be understood. Peaks and also valleys might result in colorization of the audio. Ideally the sound pressure level of the wireless speakers should be linear through the entire working range.
Then again, various producers push this standard to the limit and may show an upper frequency where the wireless loudspeakers will hardly generate a beep anymore. Additionally, just examining these 2 numbers does not say a lot about the linearity of the frequency response. Subsequently it is better to have a full frequency response document. This sort of graph is going to reveal whether or not there are any significant peaks and / or valleys within the operating frequency range. You might also desire to ask for a phase response diagram which offers essential hints in regards to the audio quality.
You also need to look at the circumstances under which the frequency response was determined. You normally won't find any details about the measurement conditions, unfortunately, in the producer's data sheet. The fact is that lots of amplifiers which are incorporated into the wireless speakers will function in a different way with different speaker loads. This is mainly because that various loudspeaker loads will cause changes to the behavior of the output power stage of the amp. The frequency response of Class-D amplifiers shows the biggest change with different speaker loads due to the built-in lowpass filter that removes switching noise from the speaker amplifier's signal. A varying loudspeaker driver load will impact the filter response to some degree. Usually the lower the speaker driver impedance the lower the highest frequency of the built-in amplifier. Moreover, the linearity of the amplifier gain is going to depend on the driver load.
Several amplifier topologies provide a mechanism to compensate for variations in the amplifier gain with different loudspeaker loads. One example of these approaches employs feedback. The amplifier output signal after the internal lowpass is input to the amplifier input for comparison. If not developed properly, this method might cause instability of the amplifier though. Different amplifiers utilize transformers and provide outputs for several loudspeaker loads. Apart from improving the frequency response of the amplifier, this approach typically furthermore improves the amplifier efficiency.
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