Estimation of the voicing cut-off frequency contour of natural speech based on harmonic and aperiodic energies

Hermus, Kris; Girin, Laurent; hamme, Hugo Van; Irhimeh, S.

doi:10.1109/icassp.2008.4518649

Cited by 8 publications

(2 citation statements)

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“…• Voicing cut-off (VCO) frequency F V : F V is computed only for voiced ST-frames using the technique given in [34]. For unvoiced frames, F V is set to zero.…”

Section: Short Term Harmonic Plus Noise Model (St-hnm)mentioning

confidence: 99%

Low Bit-Rate Speech Codec Based on a Long-Term Harmonic Plus Noise Model

Ali¹,

Djaziri-Larbi²,

Girin³

2016

J. Audio Eng. Soc.

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The long-term harmonic plus noise model (LT-HNM) for speech shows an interesting data compression, since it exploits the smooth evolution of the time trajectories of the short-term harmonic plus noise model parameters, by applying a discrete cosine model (DCM). In this paper, we extend the LT-HNM to a complete low bit-rate speech coder. A Normalized Split Vector Quantization (NSVQ) is proposed to quantize the variable dimension LT-DCM vectors. The NSVQ is designed according to the properties of the DCM vectors obtained from a standard speech database. The obtained LT-HNM coder reaches an average bit-rate of 2.7kbps for wideband speech. The proposed coder is evaluated in terms of modeling and coding errors, bit-rate, listening quality and intelligibility.

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“…• Voicing cut-off (VCO) frequency F V : F V is computed only for voiced ST-frames using the technique given in [34]. For unvoiced frames, F V is set to zero.…”

Section: Short Term Harmonic Plus Noise Model (St-hnm)mentioning

confidence: 99%

Low Bit-Rate Speech Codec Based on a Long-Term Harmonic Plus Noise Model

Ali¹,

Djaziri-Larbi²,

Girin³

2016

J. Audio Eng. Soc.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The fundamental frequency F0 is first estimated using Praat's autocorrelation method [9] (which implicitly provides voiced/unvoiced segmentation). The VCO frequency FV is estimated using the method of [10] based on the maximization of the sum of a cumulative periodic energy for the lower band and a cumulative aperiodic energy for the upper band. The estimated FV value is rounded to the nearest harmonic frequency, which becomes the last harmonic of the frame, indexed by H k .…”

Section: The Two-band Harmonic + Noise Modelmentioning

confidence: 99%