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Voice speed changing method and its device

A technology of changing devices and changing magnifications, which is applied in speech analysis, speech recognition, instruments, etc., and can solve the problems of correct detection of sound regions and the inability to correctly set noise levels, etc.

Inactive Publication Date: 2003-09-10
NIPPON HOSO KYOKAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] However, in broadcasting channels, etc., there are not only noises, but also background sounds such as music and foley as effect sounds. Generally, the sound levels of these are constantly changing, and at the same time, the sound usually continues to occur. Yes, the input signal energy level will hardly be fixed after a certain period of time. In this case, even the third method cannot correctly set the noise level, and the correct detection of the sound area becomes a problem.

Method used

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  • Voice speed changing method and its device
  • Voice speed changing method and its device
  • Voice speed changing method and its device

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Embodiment Construction

[0054] Hereinafter, the present invention will be described in detail with reference to the drawings.

[0055] figure 1 is a block diagram showing an embodiment of the speech rate converting device of the present invention.

[0056] The speed conversion device shown in this figure includes a terminal 1, an A / D converter 2, an analysis processor 3, a data block divider 4, a data block memory 5, a connection data generator 6, a connection data memory 7, and a connection sequence generation 8, voice data connector 9, D / A converter 10, terminal 11, etc., apply analysis processing to the input voice data from the speaker, based on the properties of the voice data, and use the desired function of the analysis information to synthesize the speech rate conversion voice When data, compare the data length (input data length) of the input voice data with the target data length calculated by multiplying the arbitrary expansion ratio here and the data length (output data length) of the ac...

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Abstract

A speech interval detecting method and a speech interval detecting device are provided which allow to decide whether an acoustic input signal is speech or not. A frame power of an input signal data is calculated in units of a predetermined frame width at a predetermined time interval, and then a maximum value and a minimum value of the frame power within a past predetermined time period are held in respective latches (33,34). A threshold value for power is decided, changed according to the maximum value being held and depending on the difference between the maximum value and the minimum value (35). The threshold value is compared with the power of a current frame to decide whether or not the current frame belongs to a speech interval or to a non-speech interval (36).

Description

[0001] The present invention is a divisional application of the invention patent application whose application number is 98800566.2. The original filing date is April 30, 1998. The title of the invention is "A method and device for detecting a sound region, and a speech speed conversion using this method and device." method and device". technical field [0002] The present invention relates to the conversion of speech speed and its device, in video equipment, audio equipment and medical equipment such as television, radio, tape recorder, tape video recorder, disc player, hearing aid, etc. Expected easy to hear. [0003] The present invention also relates to the processing of sounds accompanied by noises or background sounds in broadcasting channels and audio tapes or in daily life, which not only changes the pitch of the voice or the speaking speed, but also mechanically recognizes the content of the meaning, in the occasion of symbolic transmission or recording, etc. etc., a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L25/78
CPCG10L2025/786G10L25/78
Inventor 今井笃清山信正都木彻
Owner NIPPON HOSO KYOKAI