Apparatus and method of code conversion and recording medium that records program for computer to execute the method
First Claim
1. A code conversion method for converting a first code sequence conforming to a first speech coding scheme into a second code sequence conforming to a second speech coding scheme, said method comprising the steps of:
- (A) inputting said first code sequence, and discriminating whether said first code sequence corresponds to a speech part or to a non-speech part and generating a discrimination result;
(B) inputting said first code sequence, converting said first code sequence into said second code sequence and outputting said second code sequence, when the discrimination result indicates the speech part;
(C) encoding pre-determined one or more sound signals corresponding to non-speech including silence, noise and tones into codes by said second speech coding scheme, and pre-storing the codes encoded by said second speech coding scheme; and
(D) stopping to input said first code sequence, generating said second code sequence by reading said pre-stored codes corresponding to a value based on the discrimination result, and outputting the generated second code sequence, when the discrimination result indicates the non-speech part.
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Accused Products
Abstract
Disclosed is a code conversion method to convert a first code sequence conforming to a first speech coding scheme into a second code sequence conforming to a second speech coding scheme. The method includes the following steps. The first step discriminates whether the first code sequence corresponds to a speech part or to a non-speech part, and generates a numerical value that indicates the discrimination result as a control flag. The second step converts the first code sequence into the second code sequence and outputs said second code sequence, when the value of the control flag corresponds to the speech part. The third step outputs the second code sequence that corresponds to the value of the control flag, when the value of the control flag corresponds to the non-speech part.
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Citations
20 Claims
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1. A code conversion method for converting a first code sequence conforming to a first speech coding scheme into a second code sequence conforming to a second speech coding scheme, said method comprising the steps of:
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(A) inputting said first code sequence, and discriminating whether said first code sequence corresponds to a speech part or to a non-speech part and generating a discrimination result; (B) inputting said first code sequence, converting said first code sequence into said second code sequence and outputting said second code sequence, when the discrimination result indicates the speech part; (C) encoding pre-determined one or more sound signals corresponding to non-speech including silence, noise and tones into codes by said second speech coding scheme, and pre-storing the codes encoded by said second speech coding scheme; and (D) stopping to input said first code sequence, generating said second code sequence by reading said pre-stored codes corresponding to a value based on the discrimination result, and outputting the generated second code sequence, when the discrimination result indicates the non-speech part. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. Code conversion apparatus including at least one processor, and configured to convert a first code sequence conforming to a first speech coding scheme into a second code sequence conforming to a second speech coding scheme, said apparatus comprising:
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a discrimination unit configured to, via said at least one processor, input said first code sequence, and to discriminate whether said first code sequence corresponds to a speech part or to a non-speech part and generates a discrimination result; a speech part conversion unit configured to, via said at least one processor, input said first code sequence, and to convert said first code sequence into said second code sequence and to output said second code sequence, when the discrimination result indicates the speech part; a switch unit configured to, via said at least one processor, stop said first code sequence when the discrimination result indicates the non-speech part; and a non-speech part generating unit configured to, via said at least one processor, encode pre-determined one or more sound signals corresponding to non-speech including silence, noise and tones into codes by said second speech coding scheme, to pre-store the codes encoded by said second speech coding scheme, and to generate said second code sequence by reading said pre-stored codes corresponding to a value based on said discrimination result, and to output the generated second code sequence, when the discrimination result indicates the non-speech part. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification