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Speech signal processing method and apparatus and hearing aid using the same

A speech signal processing and speech signal technology, applied in hearing aid signal processing, hearing aids, speech analysis, etc., can solve the problem of reducing speech intelligibility and achieve high speech intelligibility

Inactive Publication Date: 2014-12-10
SIEMENS AG
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This will further reduce speech intelligibility

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  • Speech signal processing method and apparatus and hearing aid using the same
  • Speech signal processing method and apparatus and hearing aid using the same

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Embodiment Construction

[0063]The following discussion is for those skilled in the art to make and use the present invention. The general principles described herein may be applied to embodiments and applications other than those described in detail below without departing from the spirit and scope of the invention as defined herein. The present invention is not intended to be limited to the embodiments shown, but to have the widest scope consistent with the principles and features disclosed herein.

[0064] Tone is more important in Chinese speech recognition, because the tone of monosyllable words is lexically meaningful. In other words, even with the same phoneme components, they can have different meanings. Therefore, in order to understand a word, a hearing-impaired person must be able to recognize phonemic composition and tone. Four lexical tones exist in Mandarin Chinese speech, and variations in pitch contours are major cues for the perception of tone information. In view of this property,...

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Abstract

A speech signal processing method is disclosed. The method includes the steps of: step S1 : converting speech waveform into digital signal; step S2: computing a short-time spectrum from the digital signal obtained in the step SI; step S3 : shifting pitch of the short-time spectrum to obtain a spectrum with modified pitch by using a pitch shift algorithm shown in following formula: F0new(n) = CxF0origin(n), wherein F0new(n) is tone enhanced pitch contour samples, F0origin(n) refers to pitch contour samples of the original speech signal, C is a pitch shifting factor and is larger than 1; step S4: converting the spectrum with modified pitch back to time-domain signal; step S5: re-sampling the time-domain signal obtained in the step S4 to obtain re-sampled speech signal; and step S6: converting the re-sampled speech signal back to waveform.

Description

technical field [0001] The present invention generally relates to digital signal processing technology, and more specifically, relates to a voice signal processing method and device, and a hearing aid using the same. Background technique [0002] According to a survey in 2006, it was found that there were 27,800,000 hearing-impaired patients in China. Hearing aids have come a long way in recent years. However, regardless of the success of current hearing aids, many assistive hearing impaired people still complain that they cannot hear well. One reason for this is that most patients suffer from sensorineural hearing loss. With this hearing loss, the patient has a defect in the inner ear, which results in a loss of the ability to analyze speech. Traditional hearing aids focus more on amplitude amplification. However, simply amplifying the amplitude cannot compensate for the loss of speech analysis ability. Chinese is a tonal language, unlike other Western languages. Base...

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Application Information

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IPC IPC(8): G10L21/02G10L13/02
CPCG10L21/013H04R25/505H04R2225/43
Inventor 杨晨
Owner SIEMENS AG
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