Audio signal processing

An audio signal processing and audio signal technology, which can be used in electrical digital data processing, analog signal digital control, loudspeakers, etc., and can solve problems such as audio signal interference.

Active Publication Date: 2016-11-23
MICROSOFT TECH LICENSING LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Background noise can interfere with the audio signal received at the microphone from the near-end user and transmitted to the far-end user during the call

Method used

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  • Audio signal processing
  • Audio signal processing
  • Audio signal processing

Examples

Experimental program
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Embodiment Construction

[0018] The embodiments are now described by way of example only.

[0019] figure 1 A communication system 100 is shown. The communication system 100 includes a first user 102 ("User A") associated with a first user device 104 and a second user 108 ("User B") associated with a second user device 110 . In other embodiments, the communication system 100 may include any number of users and associated user equipment. The user devices 104 and 110 can communicate through the network 106 in the communication system 100, thereby allowing the users 102 and 108 to communicate with each other through the network 106. figure 1 The communication system 100 shown is a packet-based communication system, but other types of communication systems can be used. The network 106 may be, for example, the Internet. Each of the user equipment 104 and 110 may be, for example, a mobile phone, a tablet device, a laptop device, a personal computer ("PC") (including, for example, Windows TM , Mac OS TM And...

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PUM

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Abstract

Disclosed is a device having an audio interface configured to generate from the audio signal an outgoing audio signal for supplying to a loudspeaker component. The audio interface is configured, in generating the outgoing audio signal, to apply dynamic range compression to the audio signal. Device software is configured to receive an incoming audio signal and generate an audio signal from the incoming audio signal. The audio signal generated by the software is supplied to the audio interface for outputting by the loudspeaker component and is also used as a reference in audio signal processing. Generating the audio signal comprises the software applying initial nonlinear amplitude processing to the incoming audio signal to modify its power envelope. The modified power envelope is sufficiently smooth to be substantially unaffected by the dynamic range compression when applied by the audio interface.

Description

Background technique [0001] The communication system allows users to communicate with each other via the network. The network may be, for example, the Internet or the Public Switched Telephone Network (PSTN). Audio signals can be transmitted between nodes in the network, allowing users to send and receive audio data (such as voice data) to and from each other in a communication session on the communication system. [0002] The user equipment may have an audio input device such as a microphone, which can be used to receive audio signals such as language from the user. The user can enter a communication session with another user, such as a private call (only two users in the call) or a conference call (there are more than two users in the call). The user's voice is received at the microphone, processed, and then sent to other users in the call via the network. The user equipment may also have an audio output device, such as a speaker, for outputting audio signals received from th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/16H04R3/02
CPCG06F3/162H04R3/02H04M9/082H04R27/00H04R2227/003G10L21/0364G10L2021/02082H03F1/3247H03G3/001H03G3/32H04B3/23H04L27/0008H04M1/6033G10L21/0208H04R3/04H04R2201/107G06F3/16H04R25/552
Inventor U·N·哈马奎斯特
Owner MICROSOFT TECH LICENSING LLC
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