Invention Grant
- Patent Title: Compressor target curve to avoid boosting noise
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Application No.: US17263020Application Date: 2019-07-18
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Publication No.: US11894006B2Publication Date: 2024-02-06
- Inventor: Zhongjin Wang , Andrew Peter Reilly , Michael William Mason
- Applicant: DOLBY LABORATORIES LICENSING CORPORATION
- Applicant Address: US CA San Francisco
- Assignee: DOLBY LABORATORIES LICENSING CORPORATION
- Current Assignee: DOLBY LABORATORIES LICENSING CORPORATION
- Current Assignee Address: US CA San Francisco
- International Application: PCT/CN2019/096535 2019.07.18
- International Announcement: WO2020/020043A 2020.01.30
- Date entered country: 2021-01-25
- Main IPC: G10L15/00
- IPC: G10L15/00 ; G10L19/00 ; G10L19/26 ; G10L21/0208 ; G10L21/0232

Abstract:
The processing of audio signals during playback is provided, so that audio signals that fall below a specified threshold loudness level are processed to avoid making unwanted background noise audible. N-channel audio is received from a playback volume controller/leveler (101). The level of the audio is compared with a threshold level. If the level is greater than the threshold level, the audio is processed with a first amount of gain in accordance with a first dynamic range control (DRC) compression curve that is tuned for professionally produced audio. If the level is less than or equal to the threshold level, the audio is processed with a second amount of gain in accordance with a second DRC compression curve that is designed to avoid boosting unwanted background noise. After applying the gain to the audio, the audio is sent to a downstream device.
Public/Granted literature
- US20210233548A1 COMPRESSOR TARGET CURVE TO AVOID BOOSTING NOISE Public/Granted day:2021-07-29
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