Data processing: speech signal processing – linguistics – language – Speech signal processing – For storage or transmission
Reexamination Certificate
2005-05-03
2005-05-03
Dorvil, Richemond (Department: 2654)
Data processing: speech signal processing, linguistics, language
Speech signal processing
For storage or transmission
C375S244000, C714S746000
Reexamination Certificate
active
06889184
ABSTRACT:
Provided is a code correction circuit for presuming an error pattern of the received code when a received ADPCM code contains a click noise and correcting such error. A device for improving voice signal comprises a click noise detector (13) which judges that a received ADPCM code contains a click noise when a short interval average value of the absolute value of the received ADPCM code exceeds a predetermined value, and a code correction circuit (11) which presumes an error position of the bit of the received ADPCM code and corrects such error so as to minimize the variation in the short interval average value of the absolute value of the received ADPCM code when a transmission error is generated in the receiving ADPCM code judged to be containing a click noise.
REFERENCES:
patent: 5768291 (1998-06-01), Kelton et al.
patent: 5799039 (1998-08-01), Laird et al.
patent: 6078620 (2000-06-01), Rennig
patent: 6578162 (2003-06-01), Yung
patent: 6731635 (2004-05-01), Brueckheimer et al.
patent: 8-223126 (1996-08-01), None
Shuji Kubota et al., “Improved ADPCM voice signal transmission employing click-noise detection scheme for TDMA-TDD personal communication system”, IEEE transations on vehicular technology, vol. 46, No. 1, Feb. 1997.
Seki Kazuhiko
Tanaka Masato
Wang Meizhong
Dorvil Richemond
Han Qi
Uniden Corporation
LandOfFree
Device for improving voice signal in quality does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for improving voice signal in quality, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for improving voice signal in quality will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3444333