Why do speakers crackle cell phone

The non-linear circuit element is usually some sort of solid state device such as a transistor or diode. If the non-linear element is subjected to a strong pulsing radio signal, it will act as a rectifier and "detect" the pulsating waveform, i. For example, a hearing aid consists of a microphone, an audio amplifier and a small speaker. If a strong pulsating radio signal impinges upon the first transistor amplifier stage, the transistor will be driven into its non-linear range and detect the pulsations.

If the pulsation rate is in the audio frequency range, the rest of the hearing aid amplifier will amplify this and deliver it to the speaker, to the great annoyance of the hearing aid wearer. This annoyance is endemic to certain digital cellular technologies including ones used in music devices like the iPhone, eek. Humming and buzzing can certainly be an issue with physical audio connections.

Sometimes the fix is as easy as cleaning the input jacks or cable plugs. Other times, these connections or the cable need to be replaced or repaired. Try troubleshooting by swapping devices, cables and, if possible, switching from a wired to wireless connection between the cell phone and speaker. Again, a simple fix could be to power cycle and reconnect the devices. Perhaps the cell phone has nothing to do with the humming or buzzing in the speaker. Maybe the speaker has its own noise issues.

The issues could include:. Poor wiring can be fixed rather easily if you know how to solder and can open up the speaker to expose the wires. We must then investigate the damage that has been done to the speaker.

Please ensure you actually need new equipment before you buy anything. Make sure you have explored all of your options. Do everything you can to convince yourself that you tried everything.

If the reason for the humming or buzzing sound is because of a poor wire connection or a blown speaker, a local tech store can likely repair it, or you can fix it yourself rather than spending money on new equipment. There could be many reasons your speakers have that annoying humming or buzzing sound around cell phones, and not all have to do with the cell phone itself.

It has been discussed how to troubleshoot your hardware and some of the more common reasons your speakers have that humming or buzzing sound when around cell phones.

In most cases, your cell phone acts like a radio, and the frequency between the two devices is causing interference. The simplest solution is to move your cell phone away from your speaker. However, faulty or loose cables may also be the culprit. A few problems are usually to blame for this annoyance, most of which can be corrected at home easily and quickly. Wipe the phone dry if you have been sweating. The sweat may enter the speaker or headset and create a crackling noise. You may need to wait for the device to dry before using it again.

Turn the phone off and leave it off if the phone has become excessively wet. You need to let the phone dry out to avoid any further damage. Leave it off for several hours. Even if the outside is dry it can take the inside of the phone a while to dry out.