The John W. Coltman Archive |
Volumes marked with * have been retained by John W. Coltman as of 1 September 2006
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Acoustic properties of pipes |
11/9/59 - 12/20/59 |
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Played frequencies of flute specimens |
9/ /64 - 10/ /64 |
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Resonance and sounding frequencies |
11/24/65/ - 1/2/66 |
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Acoustic properties of pipes |
1/3/66-11/6/66 |
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Impedance of jet, strobe photos of jet |
2/8/67 - 1/7/68 |
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Phase velocity on jet, Q of pipes, characterizing instruments |
1/27/68 - 1/7/68 |
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Experiment on double organ pipe. Publication 1.05 |
1/30/69 - 10/6/69 |
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Experiment on mouth resonance effects. Publication 1.09 |
3/19/69 - 4/23/69 |
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Test flutes of different materials, side holes, artificial blowing |
1/12/70 - 8/12/70 |
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Jet drive mechanisms in edge tones |
8/30/70 - 12/12/70 |
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Finger holes in the Boehm flute |
1/30/71 - 3/20/71 |
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Drive mechanisms in organ pipes |
1/16/71 - 12/3/71 |
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Acoustically excited free jet |
1/8/72 - 2/11/72 |
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Notes from 2/11/72 to 3/9/73 are missing. |
2/11/72-5/2/73 |
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Further calculations on organ pipe drives |
5/2/73-10/27/73 |
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The Intonation of Antique and Modern Flutes |
12/19/73 -3/26/74 |
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Resonances, blowing effects, intonation |
12/3/73 - 5/24/74 |
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Finger holes, keys and cavities |
4/20/74 - 9/ /74 |
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Murray Flute - Armstrong prototype |
15/13/74 - 8/25/74 |
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Non-Linear effects in closed tubes |
12/ /74 - 1/12/75 |
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Fifty Flutists -- Tests of flute at NFA Convention |
1/27/75- 11/19/75 |
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Cooper Scale flutes |
11/05/74 - 8/15/76 |
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No cavity flute, Cooper-Powell, misc. calculations |
10/21/75 - 1/14/76 |
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Jack Moore and his flutes |
2/12/76 - 11/1/76 |
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Analyses of lossy flute using Smith chart impedance diagram |
3/30/76 - 11/1/76 |
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A new C# for the Boehm Flute |
4/19/76 - 10/15/76 |
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Alto Saxophone Measurements |
12/9/76 - 5/ /77 |
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Tee head, flute designs, cork considerations |
12/22 /76 - 12/28/77 |
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Wavelength, multiphonics, flute in F and piccolo, porosity in wall |
2/3/78 - 10/8/78 |
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Scales of various flutes, High E modes, jet wave analysis |
1/ /79 - 9/4/79 |
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Intonation studies of Alto Saxophones for Conn Artley Division |
4/13/79 - 7/2/79 |
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Momentum transfer in jet excitation of flute-like instruments |
12/7/79 - 5/23/80 |
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Correspondence with William Strong |
12/15/80- 5/2/80 |
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The trumpet as a parametric oscillator |
3/15/81- 7/1/81 |
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Conical bores, Powell dimensions, blown resonator, E5 tone |
1/25/81 - 6/28/81 |
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Bore size, mode inharmonicity, recurved head, some flutes |
8/25/81 -12/11/82 |
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Theobald Boehm and the scale of the modern flute, Part 1 |
11/25/81 - 6/28/819 |
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Theobald Boehm and the scale of the modern flute, Part 2. |
7/30/82 - 6/3/83 |
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Recurved heads, Emerson, Moore, & Wimberly flutes, tone holes |
7/12/83 -12/21/83 |
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Coltman scale, Wimberly |
4/6/84 - 4/19/84 |
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Alto Flutes |
4/10/83 - 3/18/95 |
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Coltman design of alto flute for Emerson |
4/16/84 - 7/2/84 |
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Recorder stability, Shakuhachi head, trill key positions |
3/19/84 - 8/28/85 |
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Drelinger headjoint, jet excursions, Tom Green flute |
3/29/85 - 5/26/85 |
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Smooth bore flute, split E, stepped head joint, Wimberly #42 |
3/2/85 - 6/9/86 |
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Time domain simulation of the flute, Part 1 |
6/ /83 - / /84 |
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Time domain simulation of the flute, Part 2 |
9/4 /84 - 2/11/91 |
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Behavior of acoustically excited jet, Part 1 |
11/ /87 - 1/3/89 |
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Behavior of acoustically excited jet, Part 2 |
2/6/89 - 5/14/89 |
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Behavior of acoustically excited jet, Part 3 |
5/5/89 - 9/25/91 |
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Behavior of acoustically excited jet, Part 4 |
9/30/91 - 11/1/91 |
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Q & A on Flute acoustics |
12/18/88 - 11/1/90 |
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Bass and Contra-bass flutes |
9/ /83 - 3/26/96 |
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Leak, inverted cone, BASIC programs, mode stretch, spectra |
3/3/87 - 9/25/91 |
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Piccolo studies, Armstrong, Conn, several others |
10/25/89 - 1/15/90 |
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Piccolo bench measurements |
3/11/90 - 7/15/90 |
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Hirschberg correspondence on jets, organ pipes |
12/6/90 - 5/31/92 |
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Tube resonances, losses in the Boehm flute |
5/19/92 - 4/15/93 |
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Conical and cylindrical piccolo spectra (Rhian Kenny) |
5/29/91 - 7/17/91 |
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Repeated impulse (spark) impedance method |
2/5/92 - 4/21/92 |
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Spectra of Goosman, Powell headjoints, Emerson flutes |
3/20/92 - 5/26/92 |
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Scale design of Boehm flute, Charles Teach'em Howe |
5/23/93 - 12/26/93 |
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Just noticeable differences in the timbre of the flute |
10/7/94 - 3/28/96 |
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Diameter, phase, oboe reed |
12/21/94 - / /97 |
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Mode spacing and the sound of early flutes |
9/7/95 - 9/22/95 |
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Losses in Bassoon pads, instrument bores |
5/9/94 ---- / /97 |
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Head joint designs |
6/23/95 - 10/18/99 |
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Wolfe and Smith - Acoustic impedance spectroscopy |
5/10/96 - 5/30/97 |
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Flute intonation in performance |
9/17/97 - 5/17/98 |
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Phelan, Hirshberg, Landell |
11/16/93 - 5/7/99 |
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Double Helmholz experiment , flow, Ocarina aperture losses |
8/10/99 - 2/01/01 |
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Loss in apertures, transmission lines, stepped bores, pad losses |
3/05/01- 3/13/02 |
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Loss in apertures, bamboo resonator, acoustics, humidity loss |
5/06/02 - 6/18/03 |
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Toroid height, ocarinas, NY flutes, marimba resonators, C hole, miter bend, shakuhachi head, quena, keratoscope, Newgrange cave |
7/1/03 - 2/03/06 |
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Piccolo design |
5/02/03 - 8/27/04 |