Links for download of Audacity (audio editor) and avidemux (video editor):

http://oldtown.glendon.yorku.ca/~teaching/bin/2655/

Installing ffmpeg library for audacity on Windows and MAC: html

Audacity links: tutorials 1, tutorial 2, making music (PDF), changing tempo, effects menu

(a) How to Change Audio Speed Without Changing Pitch, Speed Up Or Slow Down Audio: video 1,

(b) What is tempo (URL link)?

What Is Beats Per Minute (BPM)?

This method involves assigning a numerical value to a tempo. “Beats per minute” (or BPM) is self-explanatory: it indicates the number of beats in one minute. For instance, a tempo notated as 60 BPM would mean that a beat sounds exactly once per second. A 120 BPM tempo would be twice as fast, with two beats per second. In terms of musical notation, a beat almost always corresponds with the piece’s time signature.
In a time signature with a 4 on the bottom (such as 2/4, 3/4, 4/4, 5/4, etc.), a beat will correspond with quarter notes. So in a 4/4 time, every four beats will take you through a full measure. In 5/4 time, every five beats will take you through a measure.

In a time signature with an 8 on the bottom (such as 3/8, 6/8, or 9/8), a tempo beat typically corresponds with an eighth note.  Sometimes tempo beats correspond with other durations. For instance, if you want to count your way through a measure of 12/8, you could choose a tempo that represents eighth notes (where 12 tempo beats get you through one measure) or a tempo that represents dotted eighth notes (where 4 tempo beats would get you through the measure).

BPM is the most precise way of indicating fast tempo or slow tempo. It’s used in applications where musical durations must be completely precise, such as film scoring. It’s also used to set metronomes that are used on the highest level professional recordings. In fact, some people use the term “metronome marking” to describe beats per minute. (From URL given in (b) above.)

Question 1

Download and install avidemux and audacity at:

http://oldtown.glendon.yorku.ca/~teaching/bin/2655/

(a) Make this nice music:

https://youtu.be/O2o_S9VTSfg

play at 1/3 tempo; audio and video must synchronize. (Use avidemux and audacity).

Display your video at:

http://oldtown.glendon.yorku.ca/~lastname/1third/tempo/

Solution:

1. Copy the youtube URL

2. Display the youtube video at your site (Embed) at:

http://oldtown.glendon.yorku.ca/~robinson/2655/embed/utube

http://oldtown.glendon.yorku.ca/~lastname/2655/embed/utube

Question 2