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Originally Posted by Walters What are frequency shifters used for ?
how to use a frequency shifter?
What really is a frequency shifter?
Can someone please make a block diagram for me and to explain the blocks
of the frequency shifter how it works im confussed? |
Hi
I can only speak for the device we built at Neve and I don't have a block diagram for it. Basically it was a teleconferencing unit that used a mic pre and a loudspeaker amplifier to amplify the voices of people in conference rooms in two locations. The microphone and loudspeaker were next to each other in the centre of the conference table.
The frequency shifter raised the frequencies the mic picked up so everything was shifted up by 5Hz (or so). The difference with speech is minimal and hardly perceptable but you could hold the mic right up to the speaker and not get feedback despite lots of mic gain and a 25 watt amplifier powering the speaker.
I'm sure that there are other uses in synthesisers but as an anti-feedback device it was bullet proof.
