JP2015102771A - Voice generation device, and device and method for changing voices - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for changing voices that is capable of effectively increasing or decreasing a degree of intimacy of voices with a simple structure.SOLUTION: One example of a device for changing voices is a voice synthesizer. When a text composed of a plurality of paragraphs is expressed with voice, a prosody information modifying unit 13 modifies prosody information so as to increase or decrease a frequency, of a last paragraph in the text, by only a constant frequency. A synthesis unit 14 synthesizes the prosody information modified by the prosody information modifying unit 13 and voice passage information to generate voice data of the text.

Description

  The present invention relates to a sound generation device that can reproduce a sound in which the degree of familiarity that a person who has heard the sound feels is increased or decreased, and a sound deformation device that can increase or decrease the degree of the degree of familiarity that a person who has heard the sound feels And a method.

  In recent years, voice guidance that explains an operation method of an electronic device to an operator by voice has become widespread. The voice used for voice guidance is often a voice that has a flat prosody and no emotion. Patent Document 1 describes a speech synthesizer that adds emotion to emotionless speech.

JP-A-7-72900

  The speech synthesizer described in Patent Document 1 which is a conventional speech transformation device uses an neural network to learn to convert emotional speech parameters into emotional parameters, thereby producing emotional speech. Give emotions. Therefore, the voice transformation device described in Patent Document 1 has a problem that a complicated configuration and procedure are required.

  In view of the above problems, the present invention provides a sound generator that can reproduce a sound in which the degree of familiarity felt by a person who has heard the sound is easily increased or decreased, and the sound familiarity with a simple configuration and procedure. An object of the present invention is to provide an audio transformation device and method that can effectively increase or decrease the degree.

  In the present invention, only the last phrase of a sentence composed of a plurality of phrases is changed to a voice including prosodic information in which the frequency is increased or decreased by a certain frequency, thereby changing the degree of familiarity of the voice felt by a person.

  According to the sound generation apparatus of the present invention, it is possible to reproduce sound in which the degree of familiarity felt by a person who has heard the sound is easily increased or decreased. According to the audio transformation device and method of the present invention, the degree of familiarity of audio can be effectively increased or decreased with a simple configuration / procedure.

It is a block diagram which shows the audio | voice generating apparatus and audio | voice deformation | transformation apparatus of 1st Embodiment. It is a block diagram which shows the audio | voice generating apparatus and audio | voice deformation | transformation apparatus of 2nd Embodiment. It is a block diagram which shows the audio | voice generator and audio | voice deformation | transformation apparatus of 3rd Embodiment. It is a figure which shows the phrase and phoneme which comprise the amplitude waveform of the 1st example sentence for demonstrating the audio | voice deformation | transformation method of embodiment, and a 1st example sentence. It is a figure which shows the phrase and phoneme which comprise the amplitude waveform of the 2nd example sentence for demonstrating the audio | voice deformation | transformation method of embodiment, and a 2nd example sentence. It is a figure which shows the example which raises the frequency after the vowel of the first phoneme of the last clause in a sentence. It is a figure which shows the characteristic of an amplitude and frequency when raising the frequency of the last clause in a text. It is a figure for demonstrating the case where the pole or inflection point nearest to the first phoneme of the last phrase in the frequency characteristic indicated by the prosody of the sentence is set as a start position for increasing the frequency. It is a figure which shows the evaluation result for demonstrating the relationship between the grade which raises a frequency only by a fixed frequency, and an effect.

  Hereinafter, a sound generation device, a sound deformation device, and a method according to each embodiment will be described with reference to the accompanying drawings. The sound generation device, the sound deformation device, and the method of each embodiment can increase the degree of familiarity of the sound by giving the sound closeness. In addition, the sound generation device, the sound deformation device, and the method of each embodiment can reduce the degree of familiarity of sound. In the following description, the operation for increasing the degree of familiarity of sound will be mainly described.

<Sound Generator and Sound Deformer of First Embodiment>
The voice generation device and the voice transformation device according to the first embodiment shown in FIG. 1 are configuration examples that increase the degree of familiarity of voice when generating voice data by voice synthesis. The speech generation device and speech transformation device of the first embodiment are speech synthesizers that generate speech data based on text data indicating sentences.

  In FIG. 1, text data indicating a predetermined sentence is input to a prosody information generation unit 11, a prosody information correction unit 13, and a synthesis unit 14. The text data is, for example, an ASCII code.

  The prosodic dictionary 12 holds a plurality of prosodic information patterns. Prosodic information is a part other than the voice quality in speech, and is a part that forms accents, rhythms, and the like. The prosody information generation unit 11 reads prosody information of a pattern suitable for each clause of the sentence of the input text data from the prosody dictionary 12, and generates the prosody information of the sentence. The prosody information is input to the prosody information correction unit 13.

  For example, the sentence indicated by the text data is a sentence “I will set…”, and between the phrase “…” and the phrase “setting”, between the phrase “setting” and the phrase “I will” It is assumed that a short interval corresponding to this time is provided. In this case, the text data itself may be provided with an interval, or the prosodic information generation unit 11 may generate prosodic information with the interval provided.

  The prosodic information correction unit 13 corrects the prosodic information so as to increase the degree of familiarity of the speech. A specific method of correcting the prosodic information in the prosodic information correcting unit 13 will be described in detail later. The modified prosody information is input to the synthesis unit 14.

  The sound path dictionary 15 holds a plurality of sound path information patterns. The sound path information is a part of voice quality in speech. The sound path dictionary 15 may hold a pattern of sound path information in units of sentences, may be stored in units of words, or may be stored in units of phonemes.

  The synthesizing unit 14 reads out the sound path information of a pattern suitable for the text of the input text data, and synthesizes the corrected prosodic information and the sound path information to generate sound data of a digital signal. The audio data is converted into an analog signal by the D / A converter 16 and output as sound from the speaker 17.

  The speech generation device and speech transformation device configured by the speech synthesizer shown in FIG. 1 includes a prosody information generation unit 11 to a sound path dictionary 15 as a microcomputer including an arithmetic processing device (microprocessor) and a storage device. can do.

<Sound Generation Device and Sound Transformation Device of Second Embodiment>
The sound generation device and the sound deformation device of the second embodiment shown in FIG. 2 are configuration examples that increase the degree of familiarity of sound when the sound data is previously formed as a sound file. The voice generation device and the voice transformation device according to the second embodiment include a voice that corrects prosodic information of voice data based on a voice file including voice data of a sentence, text data indicating the sentence, and timing data of the text data. It is a processing device.

  In FIG. 2, the prosody / vocal tract separation unit 21 receives an audio file including audio data of sentences. The audio file is, for example, in the WAV format. The audio file is not limited to the WAV format.

  The prosody / vocal tract separation unit 21 separates audio data of the audio file into prosody information and vocal tract information. The vocal tract information holding unit 22 holds the vocal tract information. The prosodic information holding unit 23 holds prosodic information.

  Text data indicating the voice data of the voice file and timing data are input to the correction position detection unit 26. The timing data indicates the time position of the audio data. With the timing data, it is possible to set an interval corresponding to the breathing time between phoneme utterance start positions and phrases. The correction position detection unit 26 detects a correction position when the prosody information correction unit 24 corrects the prosody information based on the text data and the timing data.

  The prosodic information correction unit 24 increases the degree of familiarity of the voice by correcting the prosodic information from the correction position detected by the correction position detection unit 26. The modified prosody information is input to the synthesis unit 14. A method of detecting the correction position in the correction position detection unit 26 and a specific correction method in the prosody information correction unit 24 will be described in detail later.

  The synthesizer 14 synthesizes the modified prosody information and the vocal tract information held in the vocal tract information holding unit 22 to generate voice data of a digital signal. The audio data is converted into an analog signal by the D / A converter 27 and output as audio from the speaker 28.

  In the speech generation device and speech transformation device configured by the speech processing device shown in FIG. 2, the prosody / vocal tract separation unit 21 to the correction position detection unit 26 are configured by a microcomputer including an arithmetic processing device and a storage device. be able to.

<Sound Generation Device and Sound Transformation Device of Third Embodiment>
The voice generation device and the voice transformation device according to the third embodiment shown in FIG. 3 are configuration examples that increase the degree of familiarity of voice spoken by a person. 3, the same parts as those in FIG. 2 are denoted by the same reference numerals, and the description thereof is omitted as appropriate.

  The voice generation device and the voice transformation device according to the third embodiment are based on voice data obtained by collecting a voice of a sentence uttered by a person with a microphone, and text data indicating a sentence generated by voice recognition of the voice data. This is a speech processing device for correcting prosodic information of speech data.

  In FIG. 3, a microphone 31 picks up a voice uttered by a person and outputs an analog voice signal. The A / D converter 32 converts an analog audio signal into digital audio data. The voice data is input to the prosody / vocal tract separation unit 21 and the voice recognition unit 33.

  The voice recognition unit 33 recognizes the voice of the input voice data and outputs text data. The text data is input to the correction position detector 34. The correction position detection unit 34 detects a correction position when correcting the prosodic information using, for example, a morphological analysis technique. The prosodic information correction unit 24 increases the degree of familiarity of the voice by correcting the prosodic information from the correction position detected by the correction position detection unit 34.

  The sound generating device and the sound deforming device configured by the sound processing device shown in FIG. 3 are the parts other than the microphone 31, the A / D converter 32, the D / A converter 27, and the speaker 28. It can comprise with the microcomputer containing.

<Audio Deformation Method of Embodiment>
The prosody information correction unit 13 in FIG. 1, the prosody information correction method in the prosody information correction unit 24 in FIGS. 2 and 3, and the correction position detection unit 26 in FIG. 2 and the correction position in the correction position detection unit 34 in FIG. A detection method will be described.

  FIG. 4A shows an amplitude waveform when the first example sentence, “I will make a stopover”, is generated. As shown in Fig. 4 (b), Ke, I, Yu, Chi, Ni, Shi, Ma, and Su of "KeIYuChiNiShiMaSu" with "Make a stopover" in Roman letters are phonemes numbered 1-8. Show. The phonemes with phoneme numbers 1 to 8 are located at respective time positions from 2.22 seconds to 2.85 seconds, for example.

  “KeIYuChi” is the phrase Ph1, “Ni” is the phrase Ph2, and “ShiMaSu” is the phrase Ph3. In the speech transformation method of the embodiment, when generating speech of a sentence having a plurality of phrases, only the last phrase in the sentence is increased in frequency by a certain frequency, thereby increasing the degree of familiarity of the speech.

  In the example shown in FIG. 4B, the prosody information correction unit 13 in FIG. 1 and the prosody information correction unit 24 in FIGS. 2 and 3 increase the frequency of the part “ShiMaSu” that is the phrase Ph3 by a certain frequency. Let The correction position detection unit 26 in FIG. 2 and the correction position detection unit 34 in FIG. 3 detect the phrase Ph3 that is the last phrase.

  FIGS. 5A and 5B show another example. FIG. 5A shows an amplitude waveform when a voice “Please enjoy yourself slowly” is generated as a second example sentence.

  As shown in Fig. 5B, "YuKkuRiTaNoShiNDeKiTeKuDaSaINe" Yu, Kku, Ri, Ta, No, Shi, N, De, Ki, Te, Ku, Da , Sa, I, Ne indicate phonemes with phoneme numbers 1 to 15, respectively. The phonemes with the phoneme numbers 1 to 15 are located at the respective time positions from 2.22 seconds to 3.49 seconds, for example.

  “YuKkuRi” is the phrase Ph1, “TaNoShiNDe” is the phrase Ph2, “KiTe” is the phrase Ph3, and “KuDaSaINe” is the phrase Ph4. In the example shown in FIG. 5B, the prosody information correction unit 13 in FIG. 1 and the prosody information correction unit 24 in FIGS. 2 and 3 perform the frequency of the “KuDaSaINe” portion of the phrase Ph4 which is the last phrase in the sentence. Is increased by a certain frequency to increase the degree of familiarity of the voice.

  In FIG. 5B, the time position of the phoneme “Ku” in the phrase Ph4 is set to 3.12. This time position 3.12 indicates the position of the consonant K. Therefore, the frequency after the consonant K rises in the “KuDaSaINe” portion of the phrase Ph4.

  In the example shown in FIG. 6, the time position of the consonant K of the phoneme “Ku” is set separately as 3.12 and the time position of the vowel u is set as 3.13 separately. In such a case, the frequency after the vowel u in the phoneme “Ku” in the “KuDaSaINe” portion of the phrase Ph4 may be increased.

  To increase the frequency by a certain frequency only for the last phrase in the sentence means to increase the frequency after the first phoneme consonant of the last phrase in the sentence and to increase the frequency after the vowel. Including.

  FIGS. 7A and 7B show amplitude and frequency characteristics when the frequency of the phrase Ph4 in FIG. 5B is increased. Black dots shown in FIG. 7B indicate extreme points or inflection points indicating the maximum value or the minimum value in the frequency characteristics. The position of the black dot does not necessarily match the position of the phoneme. However, in many cases, the position of the phoneme is a pole or an inflection point.

  (A), (b) of FIG. 7 has shown the case where the frequency after the consonant K in phoneme "Ku" is raised. In FIG. 7B, the broken line indicates the characteristic when the frequency is not increased, and the solid line indicates the characteristic when the frequency is increased. Here, an example is shown in which the frequency of the prosody of “KuDaSaINe” is uniformly increased by 40 Hz.

  Increasing the frequency does not affect the amplitude characteristics shown in FIG. Therefore, there is no change in the amplitude characteristics between the state where the frequency is not increased and the state where the frequency is increased.

  With reference to FIG. 8, a more detailed and preferable speech transformation method for increasing the frequency of the last clause in a sentence will be described. In this example, the part of “... it was ...” in the sentence “I will set…” is taken as an example. It is assumed that the sound prosody of the portion “... Was ...” has a frequency characteristic as shown in FIG. Here, frequency characteristics are schematically shown for simplification.

  8A to 8C, black circle points p1 to p6 indicate pole points or inflection points as in FIG. The positions of the points p1 to p6 do not necessarily coincide with the positions of the phonemes, but the positions of the phonemes are often extreme points or inflection points.

  The prosodic information correcting unit 13 in FIG. 1 and the prosodic information correcting unit 24 in FIGS. 2 and 3 are positions closest to the first phoneme among a plurality of phonemes constituting the last phrase, and the frequency indicated by the prosody of the sentence The characteristic pole or inflection point can be the starting position for increasing the frequency by a certain frequency.

  In the example of FIG. 8A, the pole or inflection point closest to “I”, which is the first phoneme of “Ita ...”, is the point p6. The prosodic information correcting unit 13 in FIG. 1 and the prosodic information correcting unit 24 in FIGS. 2 and 3 increase the frequency from the point p6 with the point p6 as the starting position of the frequency increase.

  FIG. 8B shows a state in which the frequency after the point p6 is increased. As the frequency increases, point p6 moves to point p6 '.

  In the frequency characteristics as shown in FIG. 8B, the frequency changes abruptly. Therefore, it is preferable to continuously change the frequency from a position a predetermined time before the start position (here, point p6 (p6 ')) where the frequency is increased by a certain frequency to the start position. The position a predetermined time before the start position may also be a pole or an inflection point.

  In the example of FIG. 8C, the position before the predetermined time is a point p5 that is a pole or an inflection point located before the start position. The frequency may be linearly changed so that the frequency continuously increases from the point p5 to the point p6 ', or may be changed to an upward convex curve or a downward convex curve.

  Here, if there is a time of 0.05 seconds or more from the point p5 to the point p6 ', it is easy to hear naturally. Therefore, when the time interval between the pole or inflection point that is the start position and the pole or inflection point located immediately before the start position is less than 0.05 seconds, A pole or inflection point having a time interval of 0.05 seconds or more is preferably selected.

  To increase the frequency by a certain frequency only for the last phrase in a sentence means to increase the frequency after a pole or inflection point closest to the first phoneme among the phonemes making up the last phrase by a certain frequency including.

  When the sentence is composed of only one phrase such as “Yes” or “Sorry”, only the last phrase described above is not set as a target for increasing the frequency.

  The relationship between the effect of increasing the frequency by a certain frequency and the effect will be described with reference to FIG. The experimental results shown in FIG. 9 show that only the last phrase in a sentence is heard by a plurality of people listening to voices whose frequencies are increased from +10 Hz to +100 Hz, and the degree of familiarity is evaluated. It is the total. In FIG. 9, ◯ indicates that the effect of increasing the degree of familiarity is high, Δ indicates that the effect is moderate, and x indicates that there is no effect.

  When the frequency is increased by +10 Hz, the sound becomes somewhat familiar, but the effect is slight. If the frequency is lower than +10 Hz, it is difficult for a person to feel the effect. Therefore, the lower limit value for increasing the frequency by a certain frequency is +10 Hz. On the other hand, when the frequency is increased by +90 Hz, it becomes a mechanical sound, and on the contrary, the familiarity is lowered. Therefore, the upper limit value for increasing the frequency by a certain frequency is +80 Hz.

  Thus, +10 Hz to +80 Hz is preferable for increasing the frequency of the last phrase in the sentence by a certain frequency. At +10 Hz to +20 Hz, the sound becomes somewhat familiar, and the effect is limited. At +60 Hz to +80 Hz, the sound becomes close, but some unnaturalness occurs. Therefore, +30 Hz to +50 Hz is particularly preferable for increasing the frequency of the last clause in the sentence by a certain frequency.

  By the way, it has also been confirmed that when the frequency of only the last phrase in the sentence is lowered by a certain frequency, the degree of familiarity of the voice decreases. In each embodiment, the sound generation device, the sound deformation device, and the method decrease the frequency of only the last phrase in a sentence by a certain frequency in order to intentionally reduce the degree of familiarity that a person feels when listening to the sound. It is also possible to make it.

  As described above, the sound generation device and the sound deformation device according to each embodiment include the prosodic information correction units 13 and 24 and the synthesis units 14 and 25. The prosodic information correction units 13 and 24 correct the prosodic information so that the frequency of only the last phrase of the sentence is increased or decreased by a certain frequency when the sentence composed of a plurality of phrases is expressed by speech. The synthesizing units 14 and 25 synthesize the prosodic information corrected by the prosody information correcting units 13 and 24 and the sound path information, thereby generating sentence voice data.

  According to the sound generation device and the sound deformation device of each embodiment, the degree of familiarity of sound can be effectively increased or decreased with a simple configuration.

  The prosodic information correction units 13 and 24 set the position of the consonant or vowel of the first phoneme among the plurality of phonemes constituting the last phrase as a start position for increasing or decreasing the frequency by a certain frequency. Thereby, the prosodic information can be corrected only for the last phrase.

  The prosodic information correction units 13 and 24 are positions closest to the first phoneme among a plurality of phonemes constituting the last phrase, and the frequency characteristic pole or inflection point indicated by the prosody of the sentence is set to a fixed frequency. It may be a starting position where the frequency is increased or decreased. Thereby, the prosodic information can be corrected only for the last phrase.

  At this time, it is preferable that the prosodic information correction units 13 and 24 continuously change the frequency from a position a predetermined time before the start position to the start position. In this way, there is almost no sense of incongruity, and the degree of familiarity of the voice can be increased or decreased.

  The prosodic information correction units 13 and 24 may set a position before a predetermined time as a pole or an inflection point located before the start position. In this way, it is possible to continuously change the frequency according to the change of the frequency characteristic.

  The speech generation device and the speech transformation device of the embodiment may be a speech synthesizer that generates speech data based on text data indicating a sentence. If the speech generation device and the speech transformation device are configured by a speech synthesizer, speech data in which the degree of familiarity of speech is increased or decreased by speech synthesis can be generated.

  An audio generation device and an audio transformation device according to an embodiment correct an audio file including audio data of a sentence, text data indicating the sentence, and timing data of the text data, and correct the prosodic information of the audio data It may be. If the sound generation device and the sound deformation device are configured by the sound processing device operating in this way, the degree of familiarity of the sound of the sound data recorded as the sound file can be increased or decreased.

  The voice generation device and the voice transformation device according to the embodiment are based on voice data obtained by collecting voice of a sentence uttered by a person with a microphone, and text data indicating a sentence generated by voice recognition of the voice data. It may be a speech processing device that corrects the prosodic information. If the sound generation device and the sound deformation device are configured by the sound processing device operating in this way, the degree of familiarity of the sound uttered by a person can be increased or decreased.

  The speech transformation method of the embodiment includes a prosody information correction step and a synthesis step. The prosodic information correction step corrects the frequency of only the last phrase of the sentence in the prosodic information to be increased or decreased by a certain frequency out of the prosodic information and the sound path information constituting the speech data of the sentence composed of a plurality of phrases. .

  In the synthesis step, the prosody information corrected in the prosody information correction step and the sound path information are synthesized to generate voice data in which the degree of familiarity of the voice when the voice data of the sentence is pronounced is changed. To do.

  According to the audio transformation method of the embodiment, the degree of familiarity of audio can be effectively increased or decreased by a simple procedure.

  The present invention is not limited to the sound generation device, sound deformation device and method of each embodiment described above, and various modifications can be made without departing from the scope of the present invention.

  The sound generator shown in FIGS. 1 to 3 shows a configuration including a sound deformation device. The voice generation device may not be provided with the voice transformation device, and the voice transformation device may be provided outside the voice generation device. The speech generator includes a storage unit that stores speech data generated to include prosodic information in which the frequency of only the last phrase of a sentence is increased or decreased by a certain frequency, and the speech data read from the storage unit The structure provided with the audio | voice reproduction | regeneration part to reproduce | regenerate may be sufficient.

  The D / A converter 16 and the speaker 17 in FIG. 1 and the D / A converter 27 and the speaker 28 in FIGS. 2 and 3 constitute at least a part of the sound reproducing unit. When the sound generation device includes a storage unit that stores sound data, a reading unit that reads out sound data from the storage unit may be part of the sound reproduction unit.

  As described above, the sound generation device includes a sound reproducing unit that reproduces sound data generated so as to include prosodic information in which only the last phrase of a sentence including a plurality of phrases is increased or decreased by a certain frequency. Just do it.

  The sound generation device and the sound deformation device may be configured by hardware, may be configured by software, or may be configured by mixing both.

  When separating and synthesizing speech into prosodic information and vocal tract, for example, a general speech analysis / synthesis system called vocoder can be used. As software, voice analysis software Praat can be used. Use the T-SOLA algorithm used in Praat.

  The present invention can also be realized by a speech transformation program that causes a computer to execute a prosodic information correction step and a synthesis step equivalent to the prosodic information correction step and the synthesis step in the speech transformation method.

13, 24 Prosodic information correction unit 14, 25 Compositing unit 16, 27 D / A converter (voice reproduction unit)
17, 28 Speaker (Audio playback unit)

Claims (10)

  An audio generator comprising: an audio reproduction unit that reproduces audio data generated so as to include prosodic information in which only the last phrase of a sentence composed of a plurality of phrases is increased or decreased by a certain frequency. When expressing a sentence composed of a plurality of phrases by voice, the prosody information correction unit for correcting the prosody information so that the frequency of only the last phrase of the sentence is increased or decreased by a certain frequency;
A synthesizing unit that generates speech data of the sentence by synthesizing the prosodic information and the sound path information corrected by the prosody information correcting unit;
An audio deformation device comprising:   The prosody information correcting unit sets a position of a consonant or a vowel of the first phoneme among a plurality of phonemes constituting the last phrase as a start position where the frequency is increased or decreased by a certain frequency. The sound deformation device according to claim 2.   The prosodic information correction unit is a position closest to the first phoneme of the plurality of phonemes constituting the last clause, and the frequency characteristic extreme point or inflection point indicated by the prosody of the sentence is set to a constant frequency. 3. The sound deformation device according to claim 2, wherein the sound deformation device is a start position where the frequency is increased or decreased by a frequency.   5. The speech transformation device according to claim 4, wherein the prosodic information correction unit continuously changes the frequency from a position a predetermined time before the start position to the start position.   6. The speech transformation device according to claim 5, wherein the prosodic information correction unit sets the position before the predetermined time as a pole or an inflection point located before the start position.   The speech transformation device according to claim 2, wherein the speech transformation device is a speech synthesizer that generates the speech data based on text data indicating the sentence.   The speech transformation device is a speech processing device that corrects prosodic information of the speech data based on a speech file including speech data of the sentence, text data indicating the sentence, and timing data of the text data. The sound deformation device according to claim 2, wherein the sound deformation device is a sound device.   The speech transformation device is characterized in that the prosody information of the speech data is based on speech data obtained by picking up speech of a sentence uttered by a person with a microphone, and text data indicating the sentence generated by speech recognition of the speech data. The speech transformation device according to claim 2, wherein the speech transformation device corrects the sound. The prosodic information correction step of correcting the frequency of only the last phrase of the sentence in the prosodic information to be increased or decreased by a certain frequency among the prosodic information and the sound path information constituting the speech data of the sentence composed of a plurality of phrases When,
Synthesizing the prosodic information corrected in the prosodic information correcting step and the sound path information to generate voice data in which the degree of familiarity of the voice when the voice data of the sentence is pronounced is changed A synthesis process;
A method of transforming speech, comprising:

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