Google Inc.

Slack Technologies, Inc.

Andrew John MacDonald

Jan K Skoglund

Björn Volcker

Ratnadeep Bhattacharjee

Sarah Henkens

Samuel Attard

Ohjoong Kwon

Lars Henrik Ellner

Natalie Qabazard

Nikhil Mohan

Jeremy Apthorp Rose

Agnostic domain communication via a user interface of a communication platform is described. A user interface associated with the communication platform can be presented via a client, wherein an instance of a first workspace of the communication platform that is associated with a first domain is presented via the user interface. A request to access a second workspace of the communication platform that is associated with a second domain that is different from the first domain can be received. Based at least partly on a determination that the request is associated with an attribute that satisfies a criteria, an instance of the second workspace can be presented via the user interface.

Agnostic domain communication via a user interface of a communication platform

An apparatus provides both clipping protection and signal level conservation while the system operates in the original width type. The apparatus includes a first shifting unit right shifting a first digital input signal to provide a first shifted signal; a second shifting unit right shifting a second digital input signal to provide a second shifted signal; a combiner combining the first shifted signal and the second shifted signal to provide a combined signal; a soft limiter soft limiting the combined signal by reducing some of the amplitudes of the combined signal to provide a soft limited signal; and a third shifting unit left shifting the soft limited signal to provide an output signal.

Clipping protection in fixed-width audio mixing

An input signal is processed through noise suppression (NS) and echo control (EC) via a multipath model that reduces noise pumping effects while maintaining EC performance. A copy of a 'noisy' input signal is sent to an EC component before the noisy signal is sent to a NS component, which processes the signal first, when there is a consistent noise level for estimation. The copy of the pre-processing noisy signal is sent to the EC component along with a 'clean' or &#x201c;noise-suppressed&#x201d; signal output from the NS component. The EC component analyzes the noisy signal as if the EC was the first component in the signal chain to determine what actions to take. The EC component then applies these actions to the clean signal received from the NS component.

Method and apparatus for reducing noise pumping due to noise suppression and echo control interaction

A mixing system provides both clipping protection and signal level conservation while the system operates in the original width type. The mixing system includes a first input multiplier multiplying a first digital input signal by a first gain value to provide a first scaled signal, a second input multiplier multiplying a second digital input signal by the first gain value to provide a second scaled signal, a combiner combining the first scaled signal and the second scaled signal to provide a combined signal, a soft limiter soft limiting the combined signal by reducing some of the amplitudes of the combined signal to provide a soft limited signal, and an output multiplier multiplying the soft limited signal by a second gain value to provide a mixed output signal, wherein the first gain value is a value that is equal to an inverse value of the second gain value.

Video conferencing with reduced bandwidth usage is disclosed. One method comprises receiving an audio stream at a server station connected to a plurality of participants in the video conference, at least one participant being a client station connected to the server station by a network and supplying the audio stream, the server station including a first memory and processor, and the client station including a second memory and processor. A mixing algorithm is performed that determines which video streams of the participants to mix to form a conference video stream for display by at least one of the participants. A video stream from the client station is selectively transmitted to the server station responsive to the mixing algorithm, and the server station transmits the conference video stream and/or the streams to be mixed to the participant(s).

Reduced bandwidth usage in video conferencing

Processing multi-channel audio streams using one or more arrangements of single-channel components. Components that only process the near-end, or capture stream, such as noise suppression (NS) components, are limited in how they can be suitably arranged for processing multi-channel streams. However, components that process the near-end stream using one or more inputs from the far-end, or render stream, such as acoustic echo cancellation (AEC) and automatic gain control (AGC) components, are arranged in one or more of the ways suitable for use with multiple channels.

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San Francisco, CA, United States of America

Andrew John MacDonald