The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 16, 2019
Filed:
Sep. 21, 2018
Amazon Technologies, Inc., Seattle, WA (US);
Jun Yang, Seattle, WA (US);
Amazon Technologies, Inc, Seattle, WA (US);
Abstract
A system that performs automatic volume control and leveling (AVCL) based on audio category and desired volume level. The system may select different settings for audio data associated with different audio sources (e.g., content providers), audio categories (e.g., types of audio data, such as music, voice, etc.), genres, and/or the like. For example, the system may distinguish between music signals and voice signals (e.g., speech) and may apply a first gain curve for the music and a second gain curve for the speech. The gain curve may include an adaptive noise gate to reduce in-channel noise, such as by attenuating quiet sounds. The system may select the gain curve based on a desired volume level, and in some examples may modify the gain curve based on a signal-to-noise ratio (SNR) of the input audio and/or based on environmental noise.