Papers › Learning Individual Speaking Styles for Accurate Lip to Speech Synthesis

Learning Individual Speaking Styles for Accurate Lip to Speech Synthesis

17 May 2020CVPR 2020 6arXiv:2005.08209archive 2025-07-28

K R Prajwal, Rudrabha Mukhopadhyay, Vinay Namboodiri, C. V. Jawahar

Humans involuntarily tend to infer parts of the conversation from lip movements when the speech is absent or corrupted by external noise. In this work, we explore the task of lip to speech synthesis, i.e., learning to generate natural speech given only the lip movements of a speaker. Acknowledging the importance of contextual and speaker-specific cues for accurate lip-reading, we take a different path from existing works. We focus on learning accurate lip sequences to speech mappings for individual speakers in unconstrained, large vocabulary settings. To this end, we collect and release a large-scale benchmark dataset, the first of its kind, specifically to train and evaluate the single-speaker lip to speech task in natural settings. We propose a novel approach with key design choices to achieve accurate, natural lip to speech synthesis in such unconstrained scenarios for the first time. Extensive evaluation using quantitative, qualitative metrics and human evaluation shows that our method is four times more intelligible than previous works in this space. Please check out our demo video for a quick overview of the paper, method, and qualitative results. https://www.youtube.com/watch?v=HziA-jmlk_4&feature=youtu.be

PaperPDFConference PDFCodeCode Syntology ran

In Syntology Open this paper in Syntology's Atlas, the map of the papers in Syntology's graph and their citations.

For agents, Syntology's MCP tool lists every function and class Syntology harvested from this paper and whether it ran (how to connect): get_harvested_code_for_paper(arxiv_id="2005.08209")

Code

Syntology Ran 1 of 9 code samples harvested from 1 repository linked to this paper; 8 have no recorded run. Of those that ran: 1 ran · our draft was wrong.

By repository: official repository: 9 samples from 1 repository, 1 ran. The run record, sample by sample. “Ran” means executed on a synthesized input, not that the code is correct or reproduces the paper.

Rudrabha/Lip2Wav officialmentioned in papermentioned on GitHubtfMIT report

Repository list and official/mentioned flags are the archive's, frozen 2025-07-28. Reachability, where shown, is from one Syntology probe window (2026-09-16 to 2026-09-18); repositories not probed show nothing. GitHub stars are not tracked.

Code Syntology ran Syntology

9 samples harvested; 1 ran; 0 honoured the contract we drafted; 8 have no recorded run. Read from Syntology's graph 2026-09-24; that is when this build read the record, not when the samples ran.

1ran · our draft was wrong
8unverified

Licence: 0 of the 9 samples are pointer only, meaning Syntology does not serve that copy's text. This page shows no code text for any sample; each one links to its file in the repository.

Harvested from Rudrabha/Lip2Wav. “Ran” means the sample executed on a synthesized input. It does not mean the output is correct, and nothing here reproduces the paper's results. “Honoured” and “violated” refer to a contract Syntology drafted from the code itself; “our draft was wrong” and “fixture could not drive it” are failures of Syntology's instrument, not of the code.

Each sample ends with its code_sha256, Syntology's identity for that exact code. An agent fetches the stored sample with Syntology's MCP tool get_code(code_sha256="…") (how to connect); click an identity to copy that call.

Repository labels, per sample. official repository: The archive marks this repository official for the paper. named in the paper: The archive records that the paper mentions this repository; it is not marked official. community (archive-listed): In the archive's code links for this paper, not marked official and not recorded as mentioned in the paper. found in paper text by Syntology: Syntology found this repository in the paper's own text; whether it is the authors' implementation is not asserted. community: Not in the archive's code links for this paper; a community repository Syntology harvested. Samples from a repository marked official are listed first. Licence labels name the repository's licence as recorded at harvest. “Pointer only” means Syntology does not serve that copy's text, for one of four reasons: no licence file was found; the licence was not identified; the licence is recorded as permissive but that copy's record is not marked cleared; or the licence is outside the permissive list Syntology serves text under (MIT, Apache-2.0, BSD and similar). Some licences outside that list permit redistribution, such as WTFPL, and GPL-3.0 under its conditions; they are simply not on the list. Hover a licence label for the reason. File links open the file on GitHub at the default branch, which may have changed since the harvest.

conv3x3 Rudrabha/Lip2Wav/face_detection/models.py official repository ran · our draft was wrong MIT (permissive) · 5baaa8c1b148ef70 · report
crop Rudrabha/Lip2Wav/face_detection/utils.py official repository unverified MIT (permissive) · 535d1e92aecfff67 · report
crop_frame Rudrabha/Lip2Wav/preprocess.py official repository unverified MIT (permissive) · a5424d7dbfd05689 · report
draw_gaussian Rudrabha/Lip2Wav/face_detection/utils.py official repository unverified MIT (permissive) · 428bab6c5fe3195e · report
get_image_list Rudrabha/Lip2Wav/complete_test_generate.py official repository unverified MIT (permissive) · 8c52e380997759b5 · report
get_image_list Rudrabha/Lip2Wav/synthesizer/hparams.py official repository unverified MIT (permissive) · e69028e4a38f513d · report
inv_preemphasis Rudrabha/Lip2Wav/synthesizer/audio.py official repository unverified MIT (permissive) · bd89c559f716b290 · report
preemphasis Rudrabha/Lip2Wav/synthesizer/audio.py official repository unverified MIT (permissive) · 56a333de6e89087a · report
transform Rudrabha/Lip2Wav/face_detection/utils.py official repository unverified MIT (permissive) · fcc1fdc4b492b421 · report

Tasks

Lip ReadingLip to Speech SynthesisSpeaker-Specific Lip to Speech SynthesisSpeech Synthesis

Results from the paper archive 2025-07-28

TaskDatasetModelMetricValueRank at snapshotLeaderboardReport
Lip Reading GRID corpus (mixed-speech) Lip2Wav WER 14.08 #1 of 1 Archive leaderboard report
Lip Reading LRW Lip2Wav WER 34.2 #1 of 1 Archive leaderboard report
Lip Reading TCD-TIMIT corpus (mixed-speech) Lip2Wav WER 31.26 #1 of 1 Archive leaderboard report
Lip to Speech Synthesis LRW Lip2Wav ESTOI 0.344 #1 of 1 Archive leaderboard report
Lip to Speech Synthesis LRW Lip2Wav PESQ 1.197 #1 of 1 Archive leaderboard report
Lip to Speech Synthesis LRW Lip2Wav STOI 0.543 #1 of 1 Archive leaderboard report
Speaker-Specific Lip to Speech Synthesis GRID corpus (mixed-speech) Lip2Wav ESTOI 0.535 #2 of 2 Archive leaderboard report
Speaker-Specific Lip to Speech Synthesis GRID corpus (mixed-speech) Lip2Wav PESQ 1.772 #2 of 2 Archive leaderboard report
Speaker-Specific Lip to Speech Synthesis GRID corpus (mixed-speech) Lip2Wav STOI 0.731 #2 of 2 Archive leaderboard report
Speaker-Specific Lip to Speech Synthesis Lip2Wav (Chem) Lip2Wav ESTOI 0.284 #2 of 2 Archive leaderboard report
Speaker-Specific Lip to Speech Synthesis Lip2Wav (Chem) Lip2Wav PESQ 1.3 #2 of 2 Archive leaderboard report
Speaker-Specific Lip to Speech Synthesis Lip2Wav (Chem) Lip2Wav STOI 0.416 #2 of 2 Archive leaderboard report
Speaker-Specific Lip to Speech Synthesis Lip2Wav (Chess) Lip2Wav ESTOI 0.29 #2 of 2 Archive leaderboard report
Speaker-Specific Lip to Speech Synthesis Lip2Wav (Chess) Lip2Wav PESQ 1.4 #2 of 2 Archive leaderboard report
Speaker-Specific Lip to Speech Synthesis Lip2Wav (Chess) Lip2Wav STOI 0.418 #2 of 2 Archive leaderboard report
Speaker-Specific Lip to Speech Synthesis Lip2Wav (DL) Lip2Wav ESTOI 0.183 #2 of 2 Archive leaderboard report
Speaker-Specific Lip to Speech Synthesis Lip2Wav (DL) Lip2Wav PESQ 1.671 #2 of 2 Archive leaderboard report
Speaker-Specific Lip to Speech Synthesis Lip2Wav (DL) Lip2Wav STOI 0.282 #2 of 2 Archive leaderboard report
Speaker-Specific Lip to Speech Synthesis Lip2Wav (EH) Lip2Wav ESTOI 0.22 #2 of 2 Archive leaderboard report
Speaker-Specific Lip to Speech Synthesis Lip2Wav (EH) Lip2Wav PESQ 1.367 #2 of 2 Archive leaderboard report
Speaker-Specific Lip to Speech Synthesis Lip2Wav (EH) Lip2Wav STOI 0.369 #2 of 2 Archive leaderboard report
Speaker-Specific Lip to Speech Synthesis Lip2Wav (HS) Lip2Wav ESTOI 0.311 #2 of 2 Archive leaderboard report
Speaker-Specific Lip to Speech Synthesis Lip2Wav (HS) Lip2Wav PESQ 1.29 #2 of 2 Archive leaderboard report
Speaker-Specific Lip to Speech Synthesis Lip2Wav (HS) Lip2Wav STOI 0.446 #2 of 2 Archive leaderboard report
Speaker-Specific Lip to Speech Synthesis TCD-TIMIT corpus (mixed-speech) Lip2Wav ESTOI 36.5 #1 of 1 Archive leaderboard report
Speaker-Specific Lip to Speech Synthesis TCD-TIMIT corpus (mixed-speech) Lip2Wav PESQ 1.35 #1 of 1 Archive leaderboard report
Speaker-Specific Lip to Speech Synthesis TCD-TIMIT corpus (mixed-speech) Lip2Wav STOI 0.558 #1 of 1 Archive leaderboard report

Ranks are positions in the archive's leaderboards as they stood at the 2025-07-28 snapshot. Results published since then are not among these rows, so a rank here is not a current standing.

Report a problem or propose a change · a person checks every report against the paper or source before anything changes; decisions are listed on /corrections