From e9ef583f997c1c5ea0d41d6c5b81e6c93e6bbe2a Mon Sep 17 00:00:00 2001
From: Paul B Mahol <onemda@gmail.com>
Date: Mon, 17 Sep 2018 12:34:57 +0200
Subject: [PATCH] doc/filters: update astats description

---
 doc/filters.texi | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/doc/filters.texi b/doc/filters.texi
index 5cc96bc1cc4..e8f0aae8dc0 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -1932,6 +1932,8 @@ Flat_factor
 Peak_count
 Bit_depth
 Dynamic_range
+Zero_crossings
+Zero_crossings_rate
 
 and for Overall:
 DC_offset
@@ -2009,6 +2011,12 @@ Overall bit depth of audio. Number of bits used for each sample.
 
 @item Dynamic range
 Measured dynamic range of audio in dB.
+
+@item Zero crossings
+Number of points where the waveform crosses the zero level axis.
+
+@item Zero crossings rate
+Rate of Zero crossings and number of audio samples.
 @end table
 
 @section atempo
-- 
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