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Audio signal processing

About: Audio signal processing is a research topic. Over the lifetime, 21463 publications have been published within this topic receiving 319597 citations. The topic is also known as: audio processing & Acoustic signal processing.


Papers
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PatentDOI
Philip R. Wiser1, LeeAnn Heringer1, Gerry Kearby1, Leon Rishniw1, Jason S. Brownell1 
TL;DR: In this paper, audio processing profiles are organized according to specific delivery bandwidths such that a sound engineer can quickly and efficiently encode audio signals for each of a number of distinct delivery media.
Abstract: Essentially all of the processing parameters which control processing of a source audio signal to produce an encoded audio signal are stored in an audio processing profile. Multiple audio processing profiles are stored in a processing profile database such that specific combinations of processing parameters can be retrieved and used at a later time. Audio processing profiles are organized according to specific delivery bandwidths such that a sound engineer can quickly and efficiently encode audio signals for each of a number of distinct delivery media. Synchronized A/B switching during playback of various encoded audio signals allows the sound engineer to detect nuances in the sound characteristics of the various encoded audio signals.

151 citations

Patent
30 Sep 2003
TL;DR: A sound system for capturing and reproducing sounds produced by a plurality of sound sources is described in this article, which includes a device for receiving sounds generated by the plurality of different sound sources and converting the separately received sounds to a different set of separate audio signals without mixing the audio signals.
Abstract: A sound system for capturing and reproducing sounds produced by a plurality of sound sources. The system comprises a device for receiving sounds produced by the plurality of sound sources and converting the separately received sounds to a plurality of separate audio signals without mixing the audio signals. The system may further comprise a device for separately storing the plurality of separate audio signals on a recording medium without mixing the audio signals and a device for reading the stored audio signals from the recording medium. A sound system and method for modeling a sound field generated by a sound source and creating a sound event based on the modeled sound field is also disclosed. The system and method captures a sound field over an enclosing surface, models the sound field and enables reproduction of the modeled sound field.

151 citations

Patent
13 Jan 2005
TL;DR: In this paper, an audio-feature analyzer automatically detects points of change in audio signals to be processed, and a central processing unit (CPU) obtains point-of-change information indicating positions of the points in the audio signals, and the point of change information is recorded on a data storage device.
Abstract: An audio-feature analyzer automatically detects points of change in audio signals to be processed. A central processing unit (CPU) obtains point-of-change information indicating positions of the points of change in the audio signals, and the point-of-change information is recorded on a data storage device. The CPU identifies point-of-change information in accordance with an instruction input by a user via a key operation unit, and audio data corresponding to the point-of-change information identified is located so that processing such as playback of audio data to be processed can be started therefrom.

151 citations

Patent
22 Apr 2003
TL;DR: In this article, a psycho-acoustically motivated, parametric description of the spatial attributes of multichannel audio signals is proposed, which allows strong bitrate reductions in audio coders, since only one monaural signal has to be transmitted, combined with quantized spatial properties of the signal.
Abstract: In summary, this application describes a psycho-acoustically motivated, parametric description of the spatial attributes of multichannel audio signals. This parametric description allows strong bitrate reductions in audio coders, since only one monaural signal has to be transmitted, combined with (quantized) parameters which describe the spatial properties of the signal. The decoder can form the original amount of audio channels by applying the spatial parameters. For near-CD-quality stereo audio, a bitrate associated with these spatial parameters of 10 kbit/s or less seems sufficient to reproduce the correct spatial impression at the receiving end.

150 citations

Patent
Jukka Holm1, Juha Henrik Arrasvuori1, Antti Eronen1, Raymond Ko1, Michael Mckay1 
18 Oct 2005
TL;DR: In this paper, the authors present an audio playback device with a receiving means for receiving multi-channel audio data, obtaining means connected to the receiving means, for obtaining first channel audio data from the multichannel audio data for playback on the audio playback devices, and playback means having at least one loudspeaker.
Abstract: The invention relates to mobile audio playback devices and methods of its operation for enhanced music and sound experience for mobile devices. To provide stereo and surround sound, the present invention provides an audio playback device with a receiving means for receiving multi-channel audio data, obtaining means connected to the receiving means, for obtaining first channel audio data from the multi-channel audio data for playback on the audio playback device, and playback means having at least one loudspeaker, and being connected to the obtaining means for outputting the first channel audio data. The other not selected audio channels or all received audio data may be transferred to other terminals for playback or may be discarded.

150 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202319
202263
2021217
2020525
2019659
2018597