From fddcfadd646109a774d3f08ed4a1767c2416e4b9 Mon Sep 17 00:00:00 2001 From: Chris Cannam Date: Tue, 22 Sep 2020 10:32:00 +0100 Subject: [PATCH] Clarify text about overall stretch factor --- main/main.cpp | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/main/main.cpp b/main/main.cpp index 6369a25..08db475 100644 --- a/main/main.cpp +++ b/main/main.cpp @@ -241,18 +241,20 @@ int main(int argc, char **argv) cerr << " A time map (or key-frame map) file contains a series of lines, each with two" << endl; cerr << " sample frame numbers separated by a single space. These are source and" << endl; cerr << " target frames for fixed time points within the audio data, defining a varying" << endl; - cerr << " stretch factor through the audio. When supplying a time map, you must specify" << endl; - cerr << " an overall stretch factor using -t, -T, or -D as well." << endl; + cerr << " stretch factor through the audio. When supplying a time map you must specify" << endl; + cerr << " an overall stretch factor using -t, -T, or -D as well, to determine the" << endl; + cerr << " total output duration." << endl; cerr << endl; cerr << " --pitchmap Use file F as the source for pitch map" << endl; cerr << endl; - cerr << " A pitch map file contains a series of lines, each with two values: a" << endl; + cerr << " A pitch map file contains a series of lines, each with two values: the input" << endl; cerr << " sample frame number and a pitch offset in semitones, separated by a single" << endl; cerr << " space. These specify a varying pitch factor through the audio. The offsets" << endl; cerr << " are all relative to an initial offset specified by the pitch or frequency" << endl; cerr << " option, or relative to no shift if neither was specified. Offsets are" << endl; cerr << " not cumulative. This option implies realtime mode (-R) and also enables a" << endl; cerr << " high-consistency pitch shifting mode, appropriate for dynamic pitch changes." << endl; + cerr << " Because of the use of realtime mode, the overall duration will not be exact." << endl; cerr << endl; cerr << " --freqmap Use file F as the source for frequency map" << endl; cerr << endl;