Data processing: speech signal processing – linguistics – language – Audio signal bandwidth compression or expansion
Patent
1996-04-03
1998-09-15
Hudspeth, David R.
Data processing: speech signal processing, linguistics, language
Audio signal bandwidth compression or expansion
704229, 704206, H04L 522, G10L 300
Patent
active
058094725
ABSTRACT:
The data rate of speech and non-speech audio is selectively reduced by respective compression techniques based upon the information content of the type of signal. A composite audio information signal formed of speech and non-speech audio is applied to both a voice encoder and a wide-band audio compression encoder. An audio-type detection circuit examines the speech spectrum as well as the entire frequency spectrum and dynamic range of the audio information and generates a selection signal indicating whether the signal is speech or non-speech audio. A composite encoded audio signal is produced by intermingling the outputs of the encoders in response to the selection signal. The composite encoded audio signal and an identification signal indicative of the audio signal type are transmitted to respective receivers at the reduced data rates for storage, and subsequent decoding and retrieval by a listener as an audible signal in response to the transmitted identification signal.
REFERENCES:
patent: 3718767 (1973-02-01), Ellis
patent: 4331837 (1982-05-01), Soumagne
patent: 4476559 (1984-10-01), Brolin et al.
patent: 4809271 (1989-02-01), Kondo et al.
patent: 4916742 (1990-04-01), Kolesnikov et al.
patent: 5121391 (1992-06-01), Paneth et al.
patent: 5406626 (1995-04-01), Ryan
patent: 5444312 (1995-08-01), Noblett et al.
patent: 5452289 (1995-09-01), Sharma et al.
patent: 5467087 (1995-11-01), Chu
patent: 5524051 (1996-06-01), Ryan
patent: 5590195 (1996-12-01), Ryan
John Saunders, Real-Time Discrimination of Broadcast Speech/Music, Proceedings of International Conference of Audio Speech and Signal Processing (ICASSP)--IEEE 1996, pp. 993-996.
Choi Glen B.
Command Audio Corporation
Hudspeth David R.
Klivans Norman R.
Storm Donald L.
LandOfFree
Digital audio data transmission system based on the information does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Digital audio data transmission system based on the information , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital audio data transmission system based on the information will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-104175