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US 2003/0118176 A1Published application
Telephone apparatus
AssigneeMatsushita Electric Industial Co., Ltd.
InventorsToshimichi Tokuda, Takashi Kimura
Life of this patent
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Abstract
The telephone apparatus of the present invention comprises a first voice band expander for generating a voiced signal frequency component by shifting the frequency of the voice signal received, a second voice band expander for generating a voiceless signal frequency component by shifting the frequency of the voice signal received, and a voice composer for composing the voice signal received, the output of the first voice band expander, and the output of the second voice band expander, which is able to output clear voices in aural communication.
Claims44
A telephone apparatus comprising:
- a first voice band expander for generating a voiced high frequency signal component, based on a voice signal received, ranging in frequency band from the upper limit frequency of said voice signal to a first frequency higher than said upper limit frequency;
- a second voice band expander for generating a voiceless high frequency signal component, based on said voice signal received, ranging in frequency band from said first frequency to a second frequency higher than said first frequency;
- and
- a voice composer for composing said voice signal received, said voiced high frequency signal, and said voiceless high frequency signal.
1 more element
A telephone apparatus comprising:
- a first voice band expander for generating a voiced high frequency signal component, based on a voice signal received, ranging in frequency band from the upper limit frequency of said voice signal to a first frequency higher than said upper limit frequency;
- a second voice band expander for generating a voiceless high frequency signal component, based on said voice signal received, ranging in frequency band from said first frequency to a second frequency higher than said first frequency;
- a discriminator for discriminating between a voiceless sound section and a voiced sound section of said voice signal received;
- a voiceless high-frequency emphasis unit for increasing the amplitude of said voiceless high frequency signal component in accordance with the discrimination result of said discriminator;
- and
- a voice composer for composing said voice signal received, said voiced high frequency signal, and the output of said voiceless high-frequency emphasis unit.
3 more elements
A telephone apparatus comprising:
- a first voice band expander for generating a voiced high frequency signal component, based on a voice signal received, ranging in frequency band from the upper limit frequency of said voice signal to a first frequency higher than said upper limit frequency;
- a second voice band expander for generating a voiceless high frequency signal component, based on said voice signal received, ranging in frequency band from said first frequency to a second frequency higher than said first frequency;
- a discriminator for discriminating between a voiceless sound section and a voiced sound section of said voice signal received;
- a voiceless high-frequency emphasis unit for increasing the amplitude of said voiceless high frequency signal component in accordance with the discrimination result of said discriminator;
- a third voice band expander for generating a pitch-equivalent signal component ranging in frequency band from the lower limit of the frequency band of said voice signal received to a third frequency lower than said lower limit frequency in accordance with the signal obtained by rectifying said voice signal received;
- and
- a voice composer for composing said voice signal received, said voiced high frequency signal component, the output of said voiceless high-frequency emphasis unit, and said pitch-equivalent signal component.
4 more elements
A telephone apparatus comprising:
- a first voice band expander for generating a voiced high frequency signal component, based on a voice signal received, ranging in frequency band from the upper limit frequency of said voice signal to a first frequency higher than said upper limit the frequency;
- a second voice band expander for generating a voiceless high frequency signal component, based on said voice signal received, ranging in frequency band from said first frequency to a second frequency higher than said first frequency;
- a third voice band expander for generating a pitch-equivalent signal component ranging in frequency band from the lower limit of the frequency band of said voice signal received to a third frequency lower than said lower limit the frequency in accordance with the signal obtained by rectifying said voice signal received;
- and
- a voice composer for composing said voice signal received, said voiced high frequency signal component, said voiceless high frequency signal component, and said pitch-equivalent signal component.
2 more elements
A telephone apparatus comprising:
- a first voice band expander for generating a voiced high frequency signal component, based on a voice signal received, ranging in frequency band from the upper limit frequency of said voice signal to a first frequency higher than said upper limit frequency;
- a second voice band expander for generating a voiceless high frequency signal component, based on said voice signal received, ranging in frequency band from said first frequency to a second frequency higher than said first frequency;
- a voice selector for selecting said voice signal, and at least said voiced high frequency signal component and said voiceless high frequency signal component;
- and
- a voice composer for composing individual voice signals selected by said voice selector.
2 more elements
A telephone apparatus comprising:
- a first voice band expander for generating a voiced high frequency signal component, based on a voice signal received, ranging in frequency band from the upper limit frequency of said voice signal to a first frequency higher than said upper limit frequency;
- a second voice band expander for generating a voiceless high frequency signal component, based on said voice signal received, ranging in frequency band from said first frequency to a second frequency higher than said first frequency;
- a discriminator for discriminating between a voiceless sound section and a voiced sound section of said voice signal received;
- a voiceless high-frequency emphasis unit for increasing the amplitude of said voiceless high frequency signal component in accordance with the discrimination result of said discriminator;
- a voice selector for selecting said voice signal received, and at least either of said voiced high frequency signal component and the output of said voiceless high-frequency emphasis unit;
- and
- a voice composer for composing individual voice signals selected by said voice selector.
4 more elements
A telephone apparatus comprising:
- a first voice band expander for generating a voiced high frequency signal component, based on a voice signal received, ranging in frequency band from the upper limit frequency of said voice signal to a first frequency higher than said upper limit frequency;
- a second voice band expander for generating a voiceless high frequency signal component, based on said voice signal received, ranging in frequency band from said first frequency to a second frequency higher than said first frequency;
- a third voice band expander for generating a pitch-equivalent signal component ranging in frequency band from the lower limit of the frequency band of said voice signal received to a third frequency lower than said lower limit frequency in accordance with the signal obtained by rectifying said voice signal received;
- a voice selector for selecting said voice signal received, and at least one of said voiced high frequency signal component, said voiceless high frequency signal component, and said pitch-equivalent signal component;
- and
- a voice composer for composing individual voice signals selected by said voice selector.
3 more elements
A telephone apparatus comprising:
- a first voice band expander for generating a voiced high frequency signal component, based on a voice signal received, ranging in frequency band from the upper limit frequency of said voice signal to a first frequency higher than said upper limit frequency;
- a second voice band expander for generating a voiceless high frequency signal component, based on said voice signal received, ranging in frequency band from said first frequency to a second frequency higher than said first frequency;
- a discriminator for discriminating between a voiceless sound section and a voiced sound section of the voice signal received;
- a voiceless high-frequency emphasis unit for increasing the amplitude of said voiceless high frequency signal component in accordance with the discrimination result of said discriminator;
- a third voice band expander for generating a pitch-equivalent signal component ranging in frequency band from the lower limit of the frequency band of said voice signal received to a third frequency lower than said lower limit frequency in accordance with the signal obtained by rectifying said voice signal received;
- a voice selector for selecting said voice signal received, and at least one of said voiced high frequency signal component, the output of said voiceless high-frequency emphasis unit, and said pitch-equivalent signal component;
- and
- a voice composer for composing individual voice signals selected by said voice selector.
5 more elements
A telephone apparatus comprising:
- a receiver for receiving a voice signal;
- a first voice band expander for generating a voiced high frequency signal component, based on the voice signal received by said receiver, ranging in frequency band from the upper limit frequency of said voice signal to a first frequency higher than said upper limit frequency;
- a second voice band expander for generating a voiceless high frequency signal component, based on said voice signal received, ranging in frequency band from said first frequency to a second frequency higher than said first frequency;
- and
- a voice composer for composing said voice signal received, said voiced high frequency signal component, and said voiceless high frequency signal component.
2 more elements
A telephone apparatus comprising:
- a receiver for receiving a voice signal;
- a first voice band expander for generating a voiced high frequency signal component, based on the voice signal received by said receiver, ranging in frequency band from the upper limit frequency of said voice signal to a first frequency higher than said upper limit frequency;
- a second voice band expander for generating a voiceless high frequency signal component, based on said voice signal received, ranging in frequency band from said first frequency to a second frequency higher than said first frequency;
- a mode setter for setting a mode of adding said voiced high frequency signal component to said voice signal received, and a mode of adding said voiced high frequency signal component and said voiceless high frequency signal component to said voice signal received;
- a memory for storing said mode;
- an off-hook generator for generating an off-hook signal;
- an off-hook signal detector for detecting said off-hook signal;
- a voice composer for executing specified voice composition in accordance with the mode stored in said memory when said off-hook signal is detected;
- and
- a voice output unit for outputting the voice signal composed by said voice composer as a voice.
7 more elements
A telephone apparatus comprising:
- a receiving means for receiving a voice signal;
- a first voice band expanding means for generating a voiced high frequency signal component, based on the voice signal received by said receiving means, ranging in frequency band from the upper limit frequency of said voice signal to a first frequency higher than said upper limit frequency;
- a second voice band expanding means for generating a voiceless high frequency signal component, based on said voice signal received, ranging in frequency band from said first frequency to a second frequency higher than said first frequency;
- a mode setting means for setting a mode of adding said voiced high frequency signal component to said voice signal received, and a mode of adding said voiced high frequency signal component and said voiceless high frequency signal component to said voice signal received;
- a memory for storing said mode;
- an off-hook generating means for generating an off-hook signal;
- an off-hook signal detecting means for detecting said off-hook signal;
- a voice composing means for executing specified voice composition in accordance with the mode stored in said memory when said off-hook signal is detected;
- and
- a voice output unit means for outputting the voice signal composed by said voice composer as a voice.
7 more elements
Dependencies are inferred from the claim text.