Data processing: speech signal processing – linguistics – language – Audio signal bandwidth compression or expansion
Patent
1999-02-17
2000-11-21
Dorvil, Richemond
Data processing: speech signal processing, linguistics, language
Audio signal bandwidth compression or expansion
704503, 360 54, G10L 2104, H04N 570
Patent
active
061515809
ABSTRACT:
An audio playback apparatus for an input data stream (d0) delivered by an audio data source (1) in a standardized data format (F1) is disclosed comprising an input decoder (2) for forming a first data stream (d1), which contains the audio information and is separated by means of an output decoder (5) into its audio signal components (L, R). In addition to the first data stream (d1), the input decoder (2) generates a second data stream (d2) which corresponds to the data contained in the data field (D1) of the standardized data format (F1), and which is fed to an additional decoder (3) that detects a second data format (F2) possibly contained in the second data stream (d2) and passes the audio information of the second data format (F2) as a third data stream (d3) to the output decoder (5). Upon detection of the second data format (F2), the additional decoder (3) provides a detection signal (dz) to the control unit (4) which, in response to this detection signal (dz), sets the output decoder (5) to the processing of the first or third data stream (d1, d3).
REFERENCES:
patent: 4348699 (1982-09-01), Tsuchiya et al.
patent: 5428593 (1995-06-01), Kanai et al.
patent: 5894480 (1999-04-01), Hoffert et al.
patent: 5902115 (1999-05-01), Katayama
Copy of EP Search Report for EP 98 10 2921, dated Jul. 21, 1998.
Bacher Dieter
Becher Juergen
Meiner Juergen
Abebe Daniel
Dorvil Richemond
Micronas Intermetall GmbH
Plevy Arthur L.
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