note on using this library

[Jackiexiao]

Makefile

install_on_ubuntu:
	git clone https://github.com/snowxmas/pysoundtouch # using python3 fork of this library
	sudo apt install -y autoconf libtool
	cd pysoundtouch/soundtouch && ./bootstrap && ./configure --enable-integer-samples CXXFLAGS="-fPIC" && make && sudo make install
	cd pysoundtouch/ && python setup.py install

set_tempo(fraction) can do time stretch. but when fraction is between (0.5 ~ 1), it sounds very bad, when > 1, it sounds ok