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Voice communications apparatus

A technology for voice communication equipment and broadband communication, which is used in telephone communication, branch office voice amplifiers, voice amplifier applications, etc., and can solve problems such as inability to enjoy high voice quality.

Inactive Publication Date: 2009-08-19
OKI ELECTRIC IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the above environment, unless the telephone itself has transmitter and receiver characteristics that can adapt to a wide frequency band, it will not be possible to achieve high-quality communication using broadband signals by means of an IP network
However, as mentioned above, for many conventional telephones, since the characteristics of the transmitter and receiver will limit the frequency band to 4kHz or lower, they will not enjoy the high frequency characteristic of IP networks or similar transmission paths that allow broadband signals. voice quality

Method used

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  • Voice communications apparatus
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Embodiment Construction

[0023] Refer to the attached figure 1 , Wherein the reference numeral 1 is generally used to indicate a preferred embodiment of the voice communication system according to the present invention. As shown, the voice communication system 1 is adapted to allow voice signals to be transmitted between specific two end nodes of a plurality of end nodes not shown and interconnected with the network 2 via the IP network 2.

[0024] One of the end nodes includes a voice communication device 10 and a telephone set 11 accommodated in the voice communication device 10. Similarly, the other end node includes a voice communication device 20 and a telephone set 12 housed in the voice communication device 20. It should be noted that, for example, as long as fax machines or other types of telephone service equipment transmit signals in the voice frequency band restricted by the conventional public switched telephone network, they can also be used to implement telephone sets 11 and 12.

[0025] In...

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Abstract

The present invention relates to a voice communication device inserted between a telephone set and a broadband transmission path having a wider communication frequency band than a voice band limited by transmitter and receiver characteristics of the telephone set, the broadband transmission path having a wider communication frequency band A voice communication device includes a transmitter frequency characteristic corrector circuit for correcting a frequency characteristic of a signal input from a telephone set, and a receiver frequency characteristic corrector circuit for correcting a frequency characteristic of a signal input into the telephone set.

Description

Technical field [0001] The present invention relates to a voice communication device, in particular to a voice communication device embedded or adapted to a telephone set, and also to a voice communication system including the device. Background technique [0002] Currently, VoIP (Voice Communication Based on Internet Protocol), voice communication using the Internet or similar IP (Internet Protocol) networks, is expanding. Even for voice communication using an IP network, it still needs to transmit voice signals whose frequency band is limited to 4kHz, which is the so-called telephone frequency band signal. This is because it is impossible to input voice signals above 4kHz into the wired transmission path or the regular public switched telephone network. In contrast, the IP network is not subject to such restrictions. It can use a wide frequency band to implement voice communication, that is, signals in the frequency band above 4kHz. [0003] More specifically, as shown in Figur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M3/40H04M7/00H04M1/60G10L21/0388
Inventor 高田真资青柳弘美秋江一良
Owner OKI ELECTRIC IND CO LTD