Check out my recommended speakers for home theater. In sound, distortion refers to the deformation of an output waveform in contrast to the input waveform. To untrained ears, the differences may be slightly audible or most often than not, goes unnoticed. But when the distortions and popping go to the extremes, it will be audible even to the most untrained of capable ears.
There are many causes of distorted and popping audio, but it may be within these four situations:. No matter how good the speaker, if the input sound is horrible, then the sound coming out from the speakers will be bad.
Even with the standard formats of. There are many reasons for having lousy source audio. A possibility is that the microphone recording the audio is terrible, or the audio production is awful. There is also another cause for lousy source audio, and that is compression. Most of the time, a single compression from audio and video sharing platforms like YouTube, Soundcloud, and Facebook only compresses files by a bit.
But when a file is re-uploaded and redownloaded many times, multiple compressions may result in a not-so-nice hearing experience. As discussed above, tweeters release high-frequency signals, but what happens if a low-frequency leak jumps onto the tweeters?
What results is a non-linear action within the speakers, thus: distortion. Think of it this way. The tweeters are supposed to provide the sweetest trebles within your crossover network. Then suddenly, a bass audio signal comes into play and completely overwhelms the tweeter.
It can make speakers pop at high volume. This sine wave represents a single-frequency audio signal. The dotted line represents no voltage. The maximum positive voltage forward current flow is shown at the peak, while the maximum negative voltage backward current flow is shown at the trough.
When the signal is at its zero point the dotted line , the speaker will be at resting position. This is because no voltage is applied to the speaker driver, even if only for an instant while the electrical current switches direction.
At the peak, the speaker is pushed as far out as it will be during the cycle. At the trough, the speaker is pulled as far in as it will be during the cycle. The resulting waveform could look something like this:. In this case, the audio signal and resulting speaker driver movement are not smooth. For a brief moment, the current is interrupted, which produces a period of no voltage. We can infer that, for a brief moment, the speaker will be told to remain at rest position and not produce any sound.
The pop is not from the silence of the speaker but from how the speaker is told to get to its rest position. In the diagram above, we see that the audio signal current interruption happens just after the peak.
At this point, the audio signal drops off instantaneously. The speaker driver is, therefore, tasked with being at two physical locations at the same time.
In this case, it should be pushed outward and at resting position simultaneously. This is impossible. So rather than teleporting, the driver attempts to move as fast as it can between the two locations at the current interrupt. Vibrations from loud bass music shake the amplifier; any loose internal wiring or components will produce popping noises in the speakers.
A competent technician can inspect the amplifier, replace defective parts and repair faulty connections. Chicago native John Papiewski has a physics degree and has been writing since He has contributed to "Foresight Update," a nanotechnology newsletter from the Foresight Institute.
Home Hardware. Speakers and Current Most of the components in your audio system use relatively small amounts of electrical current. Speaker Cables A poor connection between the speaker cables, the amplifier and the speakers is one cause of popping sounds. Turn off any nearby electronic devices that may be interfering with the speaker sound. How do you fix a crackling speaker? Why do my speakers distort at high volume? What causes static noise in speakers?
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