Invalidity dossier
US 9613620
Methods and systems for voice conversion
Current assignee: Google LLC
Added 9/23/2026, 9:39:47 PM
Active provider: DeepSeek · deepseek-flash
Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Patent Overview: US 9,613,620 B2 — Methods and Systems for Voice Conversion
Title: Methods and systems for voice conversion
Patent number: US9613620B2 (application US14/631,464; publication US20160005403A1)
Inventors: Ioannis Agiomyrgiannakis and Zoi Roupakia
Assignee: Google LLC (originally Google Inc.; recorded as a change of name in 2017)
Dates: Priority date 2014-07-03; filing date 2015-02-25; publication date 2017-04-04; anticipated expiration 2035-02-25. Legal status listed as Active.
Purpose: Voice conversion systems alter speech from a first speaker so it takes on voice characteristics of a second speaker. In text-to-speech (TTS), recorded speech sounds from a first speaker may be concatenated and converted so the synthetic speech is "perceived as speech from the second speaker."
Plain-language scope (from the supplied text): In one described method, a device (one or more processors) receives data on speech sounds having first voice characteristics, receives input speech with second voice characteristics, maps a portion of the second voice's speech to speech sounds of the first voice, compares the two sets of voice characteristics based on that mapping, determines a representation associating the two, and outputs pronunciations of the first voice's speech sounds according to the second voice's characteristics. The comparison may include vocal tract characteristics, nasal cavity characteristics, and voicing characteristics; voicing characteristics may relate to a glottal formant or spectral tilt (between spectral features of a first-voice speech sound and corresponding features of a second-voice speech sound). A second method covers receiving a request for speech content, selecting a sequence of speech sounds from the first voice, receiving representations associating the two voices' characteristics, modifying the sequence, and providing the content in the second voice. Device and "means for" system claims parallel these methods. Classifications include G10L15/07, G10L17/06, G10L21/013, G10L2021/0135 (voice conversion or morphing), and G10L25/75.
Source: https://patents.google.com/patent/US9613620/en
What the excerpt does not establish: The full claim text, the complete specification, the number of claims, the actual figures, and the omitted portions of the description (the excerpt cuts off mid-sentence at "a speech corpus"). It also does not establish any legal conclusions about the listed status or dates.
Generated 10/1/2026, 9:34:08 PM
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