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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.
AUDIO DE-EMPHASIS RESPONSE TABLE - FM Systems
https://www.fmsystems-inc.com/audio-de-emphasis-response-table/
In the receiver, De-emphasis is used after demodulation to recover a flat audio frequency response. This results in a much improved Signal-to-Noise Ratio for any given FM transmission system. The standard in the USA for FM Radio is 75 microseconds.
De-Emphasis [Analog Devices Wiki]
https://wiki.analog.com/resources/tools-software/sigmastudio/toolbox/filters/deemphasis
The De-Emphasis filter is pre-configured, with set parameters, and is used to attenuate the high-frequency components boosted during recording with pre-emphasis. When the De-Emphasis block is used on audio recorded with pre-emphasis, its signal-to-noise ratio is greatly improved.
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 ratio for FM reception. A time constant of 75µs is specified in the RC or L/Z network for pre-emphasis and de-emphasis.
What does de-emphasize mean? definition, meaning and audio ...
https://www.audioenglish.org/dictionary/de-emphasize.htm
Definition of de-emphasize in the AudioEnglish.org Dictionary. Meaning of de-emphasize. What does de-emphasize mean? Proper usage and audio pronunciation (plus IPA phonetic transcription) of the word de-emphasize. Information about de-emphasize in the AudioEnglish.org dictionary, synonyms and antonyms.
Why does an audio DAC possess deemphasis hardware ...
https://electronics.stackexchange.com/questions/249441/why-does-an-audio-dac-possess-deemphasis-hardware
\$\begingroup\$ Do you understand what de-emphasis is in audio context? It's not clear if the question is about why do de-emphasis at all, or about how it's implemented in this chip. \$\endgroup\$ – Olin Lathrop. Aug 3 '16 at 10:53
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.
De-emphasis in DAC - High-End Audio Discussion Forum
https://forum.audiogon.com/discussions/de-emphasis-in-dac
AFAIK, the sole purpose of deemphasis was to reduce tape noise in analog recordings - almost never used today, since most of recordings are digital. CD players have deemphasis built in and engage it automatically (CD contains deemphasis bit). joser9616 OP 29 posts 01-26-2021 3:49pm
FM Audio Understanding (Pre-emphasis, De-emphasis …
https://forums.qrz.com/index.php?threads/fm-audio-understanding-pre-emphasis-de-emphasis-and-flat.665484/page-3
The Idea of a standardized pre and de-emphasis on narrowl band FM is ok BUT there are other bumps in the audio spectrum to consider. Most comm radio receivers also have a low freq cut off so the CTCSS or digital Squelch tones are not heard in the speaker, and different brands may have slightly different curves in the audio filtering so there may be a lot of …
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