GB/T 7348-2017Standard spectrum of whispered Chinese speech (English PDF)
汉语耳语标准频谱
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 29, 2017
Implementation date
December 29, 2017
Scope
GB/T 7348-2017 is the English-translated version of 汉语耳语标准频谱.
GB/T 7348-2017 is the Chinese standard "Standard spectrum of whispered Chinese speech". Its scope clause reads: This standard specifies the standard spectrum of Mandarin Chinese whisper.
This standard is applicable to systems that generate, transmit, receive, and process Chinese whisper signals and electro-acoustic devices. It can also be used as a design basis and model.
Spectral shaping of the proposed signal source. Its clauses include terms and definitions; chinese whisper standard spectrum.
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Document preview — GB/T 7348-2017
National Standard of the People's Republic of China
- ICS
- 35.020
- Classification
- L 04
- Replacing
- GB/T 7348-1987
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 4 Chinese whisper standard spectrum
1 Scope
This standard specifies the standard spectrum of Mandarin Chinese whisper.
This standard is applicable to systems that generate, transmit, receive, and process Chinese whisper signals and electro-acoustic devices. It can also be used as a design basis and model.
Spectral shaping of the proposed signal source.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB/T 3241-2010 Electroacoustic octave and fractional octave filters
GB/T 3769-2010 Electroacoustics for plotting the frequency characteristics and the scale and size of polar plots
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 Whisperedspeech Whispering
The vocal cords maintain a half-open position but do not vibrate. The random noise emitted by the glottis is modulated by each cavity.
3.2 Chinese whispered Chinesespeech
The sound produced by a Mandarin speaker in a whispered state.
3.3 Power spectral density
The distribution of power in frequency per unit bandwidth.
3.4
Statistical Fitting of Long-Term Average Power Spectral Density in Chinese Whispers.
4 Chinese whisper standard spectrum
4.1
The Functional Form of Power Spectral Density Level Curve of Chinese Whisper Standard
According to the provisions of GB/T 3241-2010, the functional form of the power spectral density curve of the Chinese whisper standard is as follows.
y=-36.9-0.22x When 0<=x<=4.891 (1) y=1.4-8.05x when 4.891 \u003cx<=6.644 (2) x=log2(f/100)
In the formula.
y - power spectral density levels normalized to long-term average total power in decibels (dB);
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Similar standards
Editions of GB/T 7348
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 7348-2017 | Standard spectrum of whispered Chinese speech | current edition | Current |
| GB/T 7348-1987 | Standard spectrum of whispered Chinese speech | previous edition | Superseded |
This page sells the current edition, GB/T 7348-2017. Earlier editions are listed for reference only.
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