Sony patents tech to match echo in dubbed audio to original sound
Sony describes a system that analyzes audio to separate the direct sound from the background echo, or reverberation. It uses a trained model to extract these components so that new, dubbed-in voices can be processed to sound like they are in the same room as the original recording.
In the filing’s own words
An information processing device that automatically adds an effect such as reverberation similar to an effect in original content to a dubbed-in voice is provided. The information processing device includes a reverberation extraction unit that receives an input of an acoustic signal, and separates and extracts a 1ch impulse response corresponding to a direct-wave component and an impulse response of a reverberation component. The reverberation extraction unit separates and extracts the respective impulse responses of the direct-wave component and the reverberation component from the acoustic signal, using a trained model that has been trained to estimate a 1ch impulse response corresponding to a direct-wave component and an impulse response of a surround signal corresponding to a reverberation component from a multi-channel acoustic signal.
What exactly they claim (claim 1)
1. An information processing device comprising a reverberation extraction unit that receives an input of an acoustic signal, and separates and extracts a 1ch impulse response corresponding to a direct-wave component and an impulse response of a reverberation component.
Facts
- Company
- Sony (Sony Group Corporation)
- Official title
- INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD, AND COMPUTER PROGRAM
- Publication number
- US20260261817A1
- Application number
- 19158084
- Filed
- Feb 2, 2024
- Published
- Sep 3, 2026
- Inventors
- 1
- Claims
- 12
Classified under
H04S 7/305 Electricity & electronicsG10L 21/034 Physics & computingG11B 27/031 Physics & computingH04S 3/008 Electricity & electronicsH04S 2400/01 Electricity & electronicsH04S 2400/13 Electricity & electronicsMore from Sony in Audio & voice
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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.