Patent
Audio encoding device and audio coding method
Akira Kamano,Yohei Kishi,Takeshi Otani +2 more
- 16 Sep 2014
2
TL;DR: In this article, a selection unit was used to select, based on the similarity, a first output that outputs one of the first channel signal and the second channel signal, or a second output that output both the first and second channels.
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Abstract: An audio encoding device includes a computer processor, the device includes a calculation unit configured to calculate a similarity in phase of a first channel signal and a second channel signal contained in a plurality of channels of an audio signal; and a selection unit configured to select, based on the similarity, a first output that outputs one of the first channel signal and the second channel signal, or a second output that outputs both of the first channel signal and the second channel signal.
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Citations
Patent
Audio playing device and signal processing method thereof
Chen Zhanpeng
- 03 Dec 2019
TL;DR: In this paper, an audio playing device consisting of a first preprocessing circuit, a second preprocessing circuits, a selection circuit and a main decoding circuit is presented. But the player is used for playing the target audio signal.
Patent
Voice coding method and device and voice decoding method and device
Niu Kun,Jiang Youhai +1 more
- 15 Mar 2019
TL;DR: In this paper, a fixed stepping value for voice signal coding is determined, and the difference value between a voice signal at the current moment and a predicted voice signal is calculated based on the fixed step value to obtain a coding result.
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Jürgen Herre,Kristofer Kjörling,Jeroen Breebaart,Christof Faller,Sascha Disch,Heiko Purnhagen,Jeroen Koppens,Johannes Hilpert,Jonas Röden,Werner Oomen,Karsten Linzmeier,Kok Seng Chong +11 more
TL;DR: The results of the standardization process are summarized by describing the underlying ideas and providing an overview of the MPEG Surround technology.
Patent
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Kristofer Kjörling,Ekstrand Per,Holger Hoerich +2 more
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A harmonic bandwidth extension method for audio codecs
Frederik Nagel,Sascha Disch +1 more
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TL;DR: This paper exposes the origin of the roughness and proposes a bandwidth extension method, which does not introduce roughness into the reconstructed audio signal, and demonstrates the advantage of the proposed method compared to a standard bandwidth extension.
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Compression Artifacts in Perceptual Audio Coding
TL;DR: This paper models the audible artifacts through the time-frequency diagrams, considers the artifacts-susceptible music types, and analyzes the critical encoding technologies incurring these artifacts.
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Patent
Method and apparatus for estimating high-band energy in a bandwidth extension system
Mark A. Jasiuk,Tenkasi V. Ramabadran +1 more
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TL;DR: In this article, a high-band digital audio signal is generated based on the highband energy level and an estimated highband spectrum corresponding to the high band energy level, which is estimated based on an estimated enery of a transition-band of the processed audio signal within a predetermined upper frequency range of a narrowband bandwidth.
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