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Title/Size/Author/Abstract |
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The
25 Essential Steps in the Development of Analogue Magnetic Sound Technology 8198154 bytes (CD aes14) |
| Author(s): Thiele,
Heinz H. K. |
| Publication: Preprint
4708; Convention 104; April 1998 |
| Abstract:
This presentation about the
development of analog magnetic sound technology attempts to describe inventions,
new procedures, components, equipment, ranges of application, as well as markets
and events, all of which offer information about changing technology
standards. |
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Audio
Engineering in the Field of Aviation Security 1733542 bytes (CD
aes13) |
| Author(s): Thiele,
Heinz H. K. |
| Publication: Preprint
3950; Convention 98; January 1995 |
| Abstract:
Audio engineering activity is not
only devoted to entertainment and education but also to many other aspects that
are both scientifically stimulating and important contributions to society, for
example, in the diagnosis and treatment of hearing problems and the increasing
uses of ultrasound technology. This is especially evident in the field of
aviation security. From the early 1960s, the recording by the cockpit voice
recorder and eventual interpretation of sound events resulting from accidents
and incidents have been of major importance in the improvement of security for
this ever-increasing sector of the traveling public. This presentation explains
the initial problems, history, design, function, technical data, and application
of voice recorders in the context of the Fairchild A 100 system and introduces
the digital A 100 S, using solid-state technology as a storage medium instead of
tape, which replaced the A 100 system in 1993. The paper also discusses the
cockpit voice recording and interpretation of a crash at Kennedy Airport in
1968, which was established as being caused by human error. |
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Audio
Technology in Berlin to 1943: Magnetic Sound Activities 4128996 bytes (CD
aes12) |
| Author(s): Thiele,
Heinz H. K. |
| Publication: Preprint
3488; Convention 94; February 1993 |
| Abstract:
In 1900, the Berlin company Mix &
Genest began manufacturing magnetic sound recorders. The further development of
Pulsen's Telegraphon did not take place until tube amplifiers became available
in the early 1920s. Typical Berlin recorders, all of them with information
carriers made of steel, were the Vox dictating machine, the Stille SEPMAG
transport, the Echophone Dailygraph, and the Lorenz Stahlton-Bandmaschine
(Steeltone-Tapemachine). In 1935 the AEG Magnetophon K1 started the magnetic
tape era and by introducing ac biasing in 1940 and two-channel stereophonic
technology in 1943, a previously unknown reproduction quality was
obtained. |
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The
Austrian Pfleumer Invented and Introduced Magnetic Tape 2863119 bytes (CD
aes12) |
| Author(s): Thiele,
Heinz H.K. |
| Publication: Preprint
3236; Convention 92; February 1992 |
| Abstract:
Preservation and restoration of tape
recordings presupposes the existence of magnetic tape. That's a platitude. In
Vienna it seems justified to report upon the life and activities of a man·the
Austrian engineer Pfleumer·who in 1928 not only invented magnetic tape but, in
contrast to inventors before him, succeeded in the realization and application
of his idea. |
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50
Years of AC-Bias: Dr. Walter Weber Accomplishes HI-FI Recording 351536 bytes (CD
aes11) |
| Author(s): Thiele,
Heinz H.K. |
| Publication: Preprint
2913; Convention 88; February 1990 |
| Abstract:
Dr. Weber by coincidence found out
about the advantages of ac-biasing in connection with tape recorders. After
clarification of the theory involved with Dr. H.J. von Braunmuhl he was
successful in the introduction of the new HIFI recording system in the German
readiostudios. German disc-companies and filmstudios follwed already before
1945. The Weber invention became a worldwide accepted system after World War II.
The other two ac-bias inventions before 1940 did not bring out results.
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Evaluating
Audio Inventions and Innovations 3684099 bytes (CD
aes11) |
| Author(s): Thiele,
Heinz H. K. |
| Publication: Preprint
2803; Convention 86; February 1989 |
| Abstract:
Solitary inventions and innovations
can't be regarded as landmarks in the history of technical evolution;
introduction to daily use is equally significant. Three examples in audio
technology illustrate the ways in which the technical and economic development
of magnetic recording have depended on the work of single individuals: Friedrich
Plfeumer for magnetic tape development, von Braunmuhl/Dr. Weber in the field of
AC biasing, John T. Mullin for effecting magnetic recording in the United
States. |
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Magnetic
Film Transport Based on the SEPMAG Method: Basis and Developmental Program from
the First Unit up to the Present Time 5934945 bytes (CD
aes11) |
| Author(s): Thiele,
Heinz |
| Publication: Preprint
2356; Convention 80; February 1986 |
| Abstract:
Already 1914 a SEPMAG transport has
been patented and in 1929 the first unit came into being. After the invention of
acbiasing in 1941 developments begun at Berlin which finally creates the present
technology. Resulted by the war and its consequences magnetic film in the first
instance was pursued in USA. 1950 appeared the transport MTK 1 as Berlin's
contribution to the state of the art. Meanwhile equipment exists combined with
high sophisticated electronics which permits the link of SEPMAG transports with
any other sound and picture source, video as well. |
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Magnetic
Sound Recording in Europe up to 1945 5355039 bytes (CD aes4) |
| Author(s): Thiele,
Heinz H. K. |
| Publication: Volume
36 Number 5 pp. 396·408; April 1988 |
| Abstract:
The 50th Anniversary of the
Magnetophon. This jubilee was an occasion for audio engineers to look back on
how the tape recorder was born and to see what has become of it. Its evolution
during the years from 1888 to almost 1945 is discuss
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