PODCAST · education
Musical Acoustics
by Clive Greated ([email protected])
Supplementary podcasts highlighting aspects discussed in the 'Musical Acoustics' course from the School of Physics and Astronomy at the University of Edinburgh.
Episodes
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Voice (8 mins, ~7 MB)
In singing, air pressure from the lungs is used to set the vocal folds into periodic oscillation producing a pitched sound source at the base of the vocal tract. By changing the positions of the jaw, lips and tongue the resonances of the air in the vocal tract, called vocal formants, can be...
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Brass1 (10 mins, ~8 MB)
The important acoustical characteristic common to members of the musical brass instrument family is not the material of construction, but the way in which the note is sounded by vibrating the lips against the rim of a mouthpiece. The lips act as a valve, open and closing periodically to modulate...
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Brass 2 (10 mins, ~8 MB)
Almost all brass instruments have air column resonances which are close to forming a harmonic series; this gives rise to the familiar pattern of “bugle call†natural notes. In the upper register the harmonics are close enough together to allow a diatonic scale to be played without modifying…
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Electronic Keyboards (10 mins, ~9 MB)
The original Hammond used rotating tone wheels to generate harmonics which were added using drawbars; not true harmonics though. The principle is known as additive synthesis. The organ is usually played through a Leslie speaker which utilizes the Doppler principle to produce chorale and tremolo...
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Architectural acoustics 2 (9 mins, ~9 MB)
In concert halls it’s desirable that the time between the arrival of the direct sound and the first reflection is not greater that 20ms. Highly reflecting parallel walls may cause undesirable flutter echo. The distance from the source where the intensity levels of the direct and reverberant…
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Architectural acoustics 1 (8 mins, ~7 MB)
Sound rays obey Snell’s law of reflection. When they strike a surface the fraction of sound energy absorbed is known as the absorption coefficient, which varies with frequency. The time for the reverberant sound in a room to drop by 60dB is known as the reverberation time R. This can be...
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Tuning and temperament (10 mins, ~9 MB)
In Pythagorean tuning the 5ths are true i.e. in the frequency ratio 3/2. In 1/4 Comma Mean Tone the major 3rds are true i.e. in the frequency ratio 5/4. Both tunings give rise to the wolf which restricts the number of playable keys to 6 major and 3 minor. In Equal Temperament all keys are…
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Woodwind 2 (15 mins, ~13 MB)
The Boehm flute has a cylindrical body and a tapered headjoint, which is required to compensate for the flattening effect of increased lip cover over the embouchure hole in the upper register. Like the saxophone, the clarinet has a mouthpiece and a single reed. It has distinctive tone qualities…
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Woodwind 1 (10 mins, ~9 MB)
In a woodwind the sound is generated by the resonating air column within the instrument, the material of construction being of secondary importance. To a first approximation the flute can be considered as a cylindrical tube open at both ends, the clarinet as a cylindrical tube closed at one end…
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Piano (10 mins, ~9 MB)
This podcast is about the modern grand piano. A full size piano usually has a compass of 7 1/4 octaves, from A0 to C8. For the notes A0 to A1 there is only one string per note, for the octave above (Bb1 to Bb2) two strings per note and for the notes above these three strings. All strings up to…
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Musical Acoustics Rudiments (15 mins, ~15 MB)
Rudiments There are twelve semitones to a complete octave, two semitones making a tone. The major diatonic scale has seven notes separated by the intervals of a tone (T) and semitone (S) in the sequence TTSTTTS. Each note has a separate letter name. In the scale of C major the most important...
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ABOUT THIS SHOW
Supplementary podcasts highlighting aspects discussed in the 'Musical Acoustics' course from the School of Physics and Astronomy at the University of Edinburgh.
HOSTED BY
Clive Greated ([email protected])
CATEGORIES
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Frequently Asked Questions
How many episodes does Musical Acoustics have?
Musical Acoustics currently has 11 episodes available on PodParley. New episodes are automatically indexed when they're published to the podcast feed.
What is Musical Acoustics about?
Supplementary podcasts highlighting aspects discussed in the 'Musical Acoustics' course from the School of Physics and Astronomy at the University of Edinburgh.
How often does Musical Acoustics release new episodes?
Musical Acoustics has 11 episodes. Check the episode list to see recent publication dates and frequency.
Where can I listen to Musical Acoustics?
You can listen to Musical Acoustics on PodParley by clicking any episode. We provide an embedded audio player for direct listening, and you can also subscribe via your preferred podcast app using the RSS feed.
Who hosts Musical Acoustics?
Musical Acoustics is created and hosted by Clive Greated ([email protected]).
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