ISCAS 2001. The 2001 IEEE International Symposium on Circuits and Systems (Cat. No.01CH37196)
DOI: 10.1109/iscas.2001.921079
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A new very low bit rate wideband speech coder with a sinusoidal highband model

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Cited by 8 publications
(6 citation statements)
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“…This approach is hybrid, because it artificially regenerates the high-frequency excitation information from the NB speech signal, and obtains the high-frequency envelope information from the side information [8,[15][16][17]. Some systems, for example, [18], make use of both correlation between the low and high frequencies of the speech signal and side information, for the generation of the HB portion of the speech signal. The quality of WB speech generated by the hybrid approach is usually significantly better than the quality of WB speech generated by the NB speech-only-based approach.…”
Section: Principles Of Speech Bandwidth Extensionmentioning
confidence: 99%
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“…This approach is hybrid, because it artificially regenerates the high-frequency excitation information from the NB speech signal, and obtains the high-frequency envelope information from the side information [8,[15][16][17]. Some systems, for example, [18], make use of both correlation between the low and high frequencies of the speech signal and side information, for the generation of the HB portion of the speech signal. The quality of WB speech generated by the hybrid approach is usually significantly better than the quality of WB speech generated by the NB speech-only-based approach.…”
Section: Principles Of Speech Bandwidth Extensionmentioning
confidence: 99%
“…and the constant c is the quantization step of Δ * m in [dB]. Note that for WNR m > 10 [dB], α m ∼ = 1, simplifying (19), used for the computation of Δ * m by (18), to…”
Section: Determination Of Subband Scs Parametersmentioning
confidence: 99%
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“…Bunlardan en temel ve basit olan ve tüm telefon sistemlerinde de kullanılan teknikte, konuşma yaklaşık 3. 4 [1]. 3.4 kHz'e bant sınırlanmış, orta-yüksek kalitedeki konuşmada 3.4−7 kHz arasında kalan kısım yok sayılmaktadır.…”
Section: Introductionunclassified
“…Birinci gruptaki çalışmalarda geniş bantlı konuşma ya frekans ekseninde sıkıştırılır yada yüksek frekans bileşenlerine ait bir takım yan bilgiler (side information) dar bantlı konuşma ile beraber gönderilir [2], [3], [4].İkinci gruptaki çalışmalarda ise dar bantlı konuşma iletim kanalında herhangi bir degişiklige ugramadan ve hiçbir ek bilgiye sahip olmadan iletilir. Bu çalışmanın da dahil oldugu bu başlık altındaki çalışmalarda konuşma kalitesi artırma işlemleri alıcı tarafında ve konuşmanın ozellikleri kullanılarak yapılır.…”
Section: Introductionunclassified