diff --git a/content/introduction/what-is-digital-audio/en/adc-dac.svg b/content/introduction/what-is-digital-audio/en/adc-dac.svg
index c358251..ce2551d 100644
--- a/content/introduction/what-is-digital-audio/en/adc-dac.svg
+++ b/content/introduction/what-is-digital-audio/en/adc-dac.svg
@@ -49,25 +49,6 @@
-
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-
@@ -94,6 +75,82 @@
rx="4.1509094"
ry="4.1509094" />
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values, samples