Roch Lefebvre
24Patents
10h-index
27Co-inventors
75Inventor score
Filing activity: Oct 27, 1999 → Nov 7, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7191123B1 | Gain-smoothing in wideband speech and audio signal decoder | Physics | 65 | Expired |
| US7151802B1 | High frequency content recovering method and device for over-sampled synthesized wideband signal | Physics | 50 | Expired |
| US8321210B2 | Audio encoding/decoding scheme having a switchable bypass | Physics | 40 | Active |
| US6795805B1 | Periodicity enhancement in decoding wideband signals | Physics | 36 | Expired |
| US6807524B1 | Perceptual weighting device and method for efficient coding of wideband signals | Physics | 35 | Expired |
| US7260521B1 | Method and device for adaptive bandwidth pitch search in coding wideband signals | Physics | 34 | Expired |
| US7529660B2 | Method and device for frequency-selective pitch enhancement of synthesized speech | Physics | 31 | Expired |
| US8484038B2 | Audio signal encoder, audio signal decoder, method for encoding or decoding an audio signal using an aliasing-cancellation | Physics | 23 | Active |
| US8959017B2 | Audio encoding/decoding scheme having a switchable bypass | Physics | 13 | Active |
| US8930198B2 | Low bitrate audio encoding/decoding scheme having cascaded switches | Physics | 13 | Active |
| US10319384B2 | Low bitrate audio encoding/decoding scheme having cascaded switches | Physics | 9 | Active |
| US10621996B2 | Low bitrate audio encoding/decoding scheme having cascaded switches | Physics | 7 | Active |
| US7672837B2 | Method and device for adaptive bandwidth pitch search in coding wideband signals | Physics | 6 | Active |
| US11475902B2 | Low bitrate audio encoding/decoding scheme having cascaded switches | Physics | 6 | Active |
| US11823690B2 | Low bitrate audio encoding/decoding scheme having cascaded switches | Physics | 3 | Active |
| US12334086B2 | Low bitrate audio encoding/decoding scheme having cascaded switches | Physics | 1 | Active |
| US12406680B2 | Low bitrate audio encoding/decoding scheme having cascaded switches | Physics | 0 | Active |
| US8036885B2 | Method and device for adaptive bandwidth pitch search in coding wideband signals | Physics | 0 | Active |
| US10545942B2 | Querying and projecting values within sets in a table dataset | Physics | 0 | Active |
| US12406679B2 | Low bitrate audio encoding/decoding scheme having cascaded switches | Physics | 0 | Active |
| US11676611B2 | Audio decoding device and method with decoding branches for decoding audio signal encoded in a plurality of domains | Physics | 0 | Active |
| US11682404B2 | Audio decoding device and method with decoding branches for decoding audio signal encoded in a plurality of domains | Physics | 0 | Active |
| US9552822B2 | Apparatus and method for processing an audio signal and for providing a higher temporal granularity for a combined unified speech and audio codec (USAC) | Physics | 0 | Active |
| US11222000B2 | Querying and projecting values within sets in a table dataset | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.