Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9537460 | Apparatus and method for automatic gain control | David L. Barron, Andrew Kirby | 2017-01-03 |
| 8983833 | Method and apparatus for masking wind noise | Bijal Joshi | 2015-03-17 |
| 8600040 | Apparatus and method for convergence control | David L. Barron | 2013-12-03 |
| 8041054 | Systems and methods for selectively switching between multiple microphones | David L. Barron | 2011-10-18 |
| 7680653 | Background noise reduction in sinusoidal based speech coding systems | — | 2010-03-16 |
| 6810377 | Lost frame recovery techniques for parametric, LPC-based speech coding systems | Grant Ian Ho, Marion Baraniecki | 2004-10-26 |
| 6456965 | Multi-stage pitch and mixed voicing estimation for harmonic speech coders | — | 2002-09-24 |
| 6438517 | Multi-stage pitch and mixed voicing estimation for harmonic speech coders | — | 2002-08-20 |
| 6377920 | Method of determining the voicing probability of speech signals | — | 2002-04-23 |
| 6377914 | Efficient quantization of speech spectral amplitudes based on optimal interpolation technique | — | 2002-04-23 |
| 6253171 | Method of determining the voicing probability of speech signals | — | 2001-06-26 |
| 6233552 | Adaptive post-filtering technique based on the Modified Yule-Walker filter | Azhar Mustapha | 2001-05-15 |
| 6098037 | Formant weighted vector quantization of LPC excitation harmonic spectral amplitudes | — | 2000-08-01 |
| 5999897 | Method and apparatus for pitch estimation using perception based analysis by synthesis | — | 1999-12-07 |
| 5890108 | Low bit-rate speech coding system and method using voicing probability determination | — | 1999-03-30 |
| 5774837 | Speech coding system and method using voicing probability determination | Joseph Gerard Aguilar | 1998-06-30 |