# CD pre-emphasis

**URL:** <https://forum.audacityteam.org/t/cd-pre-emphasis/78335>\
**Category:** Audacity 3 Help Forum\
**Created:** [June 21, 2023, 4:05pm UTC](https://forum.audacityteam.org/t/cd-pre-emphasis/78335 "2023-06-21T16:05:32Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![frankobert](https://forum.audacityteam.org/letter_avatar_proxy/v4/letter/f/b487fb/32.png) [@frankobert](https://forum.audacityteam.org/u/frankobert)\
**Post date:** [June 21, 2023, 4:05pm UTC](https://forum.audacityteam.org/t/cd-pre-emphasis/78335/1 "2023-06-21T16:05:32Z")

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I have an old CD with Haydn Symphonies 93-98 that I extracted with EAC. Always wondered why high tones are so exaggerated till I found out hat some old CD have a pre-emphasis which was not shown in EAC.  
Now I found out that Audacity has for venyl the RIA de-emphasing curve as default. Would be great if the attached CD de-emphasis curve could be included. So far I helped myself with a manual de-emphasis of the graphic equalizer.

 ![Stereo Lab - CD de-emphasis](https://forum.audacityteam.org/uploads/default/original/3X/6/c/6c6b52ba8da20997402de644d570df18666675ae.jpeg)

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**Author:** ![Trebor](https://forum.audacityteam.org/user_avatar/forum.audacityteam.org/trebor/32/45854_2.png) [@Trebor](https://forum.audacityteam.org/u/Trebor)\
**Post date:** [June 21, 2023, 5:30pm UTC](https://forum.audacityteam.org/t/cd-pre-emphasis/78335/2 "2023-06-21T17:30:56Z")

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> [@frankobert](#):
>
> So far I helped myself with a manual de-emphasis of the graphic equalizer.

[Filter curve](https://manual.audacityteam.org/man/filter_curve_eq.html) is more accurate …

![close-enough](https://forum.audacityteam.org/uploads/default/original/3X/1/8/1814c5f5b6557284331b2dde6cb50b436f105cfa.gif)

[CD\_De-Emph.txt](https://forum.audacityteam.org/uploads/short-url/kNrRr2vNMit3pJGME2uOtrRMqrC.txt) (416 Bytes)

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**Author:** ![frankobert](https://forum.audacityteam.org/letter_avatar_proxy/v4/letter/f/b487fb/32.png) [@frankobert](https://forum.audacityteam.org/u/frankobert)\
**Post date:** [June 21, 2023, 6:22pm UTC](https://forum.audacityteam.org/t/cd-pre-emphasis/78335/3 "2023-06-21T18:22:20Z")

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Thank you for quick help Trebor! The filter curve is perfect. I already applied it an now the sound is well balanced.

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**Author:** ![system](https://forum.audacityteam.org/uploads/default/original/1X/81a69b20bcd548215067cfaceccc8a10bfa2d176.png) [@system](https://forum.audacityteam.org/u/system)\
**Post date:** [July 21, 2023, 4:05pm UTC](https://forum.audacityteam.org/t/cd-pre-emphasis/78335/4 "2023-07-21T16:05:49Z")

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Closed on July 21, 2023, 4:05pm UTC

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