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Filter Distortion - Frequency Modulation

from Yeah Buddy! Year #1 by Various

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about

November saw the release of FD's début album 'Transition'. It is a body of work worthy of a wide, adoring audience. Frequency Modulation sees them at their experimental, electronic peak.

lyrics

It is common knowledge that FM radio, is affected less than AM by the many electrical disturbances that cause interference to a radio communications.

The listener however wants more than common knowledge. He must know why and how.

But before studying FM, the fundamentals of AM should be reviewed. You'll see why the problem of interference exists in high frequency AM and then learn how AM has reduced it.

Let us review and detail the separate actions that take place in an AM transmitter.

The information or audio to be transmitted starts as sound waves, which travel through air.

The microphone picks up these waves and transforms them in electrical energy.

Now the audio travels into the transmitter taking the form of audio frequency voltages.

Audio frequencies in equipment generally fall within a range of from 300 to 3000 cycles per second.

However, it is not practical to transmit these audio frequencies directly.

An oscillator provides a much higher frequency. This radio frequency wave is called a carrier.

By means of a modulator and one or more RF amplifiers the amplitude variations of the audio signal and the radio frequency carriers are combined.

Now the experience takes the form of amplitude variations. The amplitude modulated RF carrier is fed to the antenna from which it is radiated through space to the receiving antenna.

Once the signal has left the antenna, however, it can be affected by many disturbances. For example one such disturbance can be lightning...

credits

from Yeah Buddy! Year #1, released December 23, 2014
Filter Distortion are;
Wesley Hughes; Vocals, Guitar
Ian Hall- Keys
Phil Gofton- Guitar
Phil Morton- Drums
Shaun Mason reads the monologue on this track

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Yeah Buddy! Widnes, UK

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