From aebdd11464a6632c9722cf2db2a4494437404674 Mon Sep 17 00:00:00 2001
From: David <david@rowetel.com>
Date: Sun, 28 Apr 2024 17:55:09 +0930
Subject: spelling error, thanks Tomas

---
 doc/codec2.tex | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'doc/codec2.tex')

diff --git a/doc/codec2.tex b/doc/codec2.tex
index 73d2565..fe0939b 100644
--- a/doc/codec2.tex
+++ b/doc/codec2.tex
@@ -81,7 +81,7 @@ This production of this document was kindly supported by an ARDC grant \cite{ard
 
 A speech codec takes speech samples from an A/D converter (e.g. 16 bit samples at 8 kHz or 128 kbits/s) and compresses them down to a low bit rate that can be more easily sent over a narrow bandwidth channel (e.g. 700 bits/s for HF).  Speech coding is the art of ``what can we throw away". We need to lower the bit rate of the speech while retaining speech you can understand, and making it sound as natural as possible.
 
-As such low bit rates we use a speech production ``model".  The input speech is anlaysed, and we extract model parameters, which are then sent over the channel.  An example of a model based parameter is the pitch of the person speaking.  We estimate the pitch of the speaker, quantise it to a 7 bit number, and send that over the channel every 20ms.
+As such low bit rates we use a speech production ``model".  The input speech is analysed, and we extract model parameters, which are then sent over the channel.  An example of a model based parameter is the pitch of the person speaking.  We estimate the pitch of the speaker, quantise it to a 7 bit number, and send that over the channel every 20ms.
 
 The model based approach used by Codec 2 allows high compression, with some trade offs such as noticeable artefacts in the decoded speech.  Higher bit rate codecs (above 5000 bit/s), such as those use for mobile telephony or voice on the Internet, tend to pay more attention to preserving the speech waveform, or use a hybrid approach of waveform and model based techniques.  They sound better but require a higher bit rate.
 
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cgit v1.2.3

