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Pre-emphasis and De-emphasis - D&E Notes
https://www.daenotes.com/electronics/communication-system/pre-emphasis-and-de-emphasis#:~:text=De-emphasis%20means%20attenuating%20those%20frequencies%20by%20the%20amount,to%20improve%20the%20signal-to-noise%20ratio%20for%20FM%20reception.
Pre-emphasis and De-emphasis - D&E Notes
https://www.daenotes.com/electronics/communication-system/pre-emphasis-and-de-emphasis
De-emphasis means attenuating those frequencies by the amount by which they are boosted. However pre-emphasis is done at the transmitter and the de-emphasis is done in the receiver. The purpose is to improve the signal-to-noise …
FM Audio Understanding (Pre-emphasis, De-emphasis …
https://forums.qrz.com/index.php?threads/fm-audio-understanding-pre-emphasis-de-emphasis-and-flat.665484/
This means that the audio being presented on the receiver has the exact same characteristics as when it is passed to the repeater transmitter. The interface or link transceiver will not shape or “touch” the audio as its being passed. If this was the case, I see where it could be possible to de-emphasized or pre-emphasize the audio twice.
Explanation of Pre & De Emphasis - Repeater Builder
http://www.repeater-builder.com/rbtip/predeemp.html
pre-emphasize the audio like a transmitter that uses a phase modulator. A separate circuit is not necessary for pre-emphasis in a transmitter that has a phase modulator because the phase modulator applies pre-emphasis to the transmitted audio as a function of the phase modulator. The receivers De emphasis circuitry takes the unnatural sounding pre
Pre and De-Emphasis
http://batlabs.com/predemp.html
For de-emphasis, the resistor is placed in series with the receive audio, at an appropriate point, and then the end of the resistor closest to the last device in the chain (TNC, speaker amplifier, etc.) is bypassed with the capacitor. You must give some thought to …
Stereo Lab - CD de-emphasis - Pspatial Audio
http://pspatialaudio.com/cd_deemp.htm
And the de-emphasis in the player further reduced the audibility of the remaining quantisation errors by attenuating the high frequencies where they are most easy heard. The presence of emphasis was signalled by a dedicated control bit in the recorded bitstream which the CD player detected and switched in the de-emphasis filter as required.
FM Pre-Emphasis and De-Emphasis - Radio Museum
https://www.radiomuseum.org/forum/fm_pre_emphasis_and_de_emphasis.html
With frequency modulation the higher audio frequencies suffer more and more from noise (hiss). To alleviate this the pre-emphasis is applied at the TX, and the de-emphasis is applied at the RX. Together with the compensation for higher audio frequencies also the hiss is reduced by de-emphasis.
What is Pre-emphasis and De-emphasis - Electronics Post
https://electronicspost.com/what-is-pre-emphasis-and-de-emphasis/
De-emphasis The process that is used at the receiver end to nullify or compensate the artificial boosting given to the higher modulating frequencies in the process of pre-emphasis is called De-emphasis. That means, the artificially boosted high frequency signals are brought to their original amplitude using the de-emphasis circuit.
De-emphasis components - Hydrogenaudio
https://hydrogenaud.io/index.php?topic=99394.0
* To de-emphasize a track, add a tag named PRE_EMPHASIS or PRE-EMPHASIS with a value 1, on or yes. Other tracks are unaffected. * There's no reason to use both components at the same time. * Don't use both foo_deemph and foo_dsp_effect (the latter has its own de-emphasis postprocessor).
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