Digital radio

[funkyrich]

 I thought the idea for digital radios was that they weren't supposed to interfere like standard analogue models. How come then if it is in a certain position it makes a distorted noise?

Its the same with digital televisions. When I first switch it on, it takes a while for certain channels to settle down.

[Buenchico]

Digital radios require a certain minimum signal level to successfully resolve transmissions. Above this level, reception should normally be free of interference. (Analogue radios, by contrast, have a reduced risk of interference as the signal strength grows but there is no 'cut-off point' at which 'interference free status' is achieved). If you're having problems with DAB radio reception, it indicates that the minimium signal threshold is not being met at the location in which the radio has been placed.

Your digital TV problems are also associated with borderline signal thresholds. It never ceases to amaze me that there are people who will spend thousands of pounds on such things as massive screen LCD TV's but they begrudge forking out for a better aerial to provide the signal required!

Chris

[ezapf]

With an analogue signal, you hear exactly what is picked out of the air. If there is a little bit of static on the received signal, you will hear a little bit of static. If there is a lot of static on the received signal, you will hear a lot of static.

With a digital signal, the audio is reconstructed in the receiver. If there is a little bit of static on the received signal, you will not hear it because the receiver reconstructs the audio and fills in the bad spots. If there is a lot of static on the received signal, you will hear distortion because the receiver does not have enough information to fill in all the bad spots.