Effect of Smoking on Cepstral Parameters.

Area of Science:

• Speech and Voice Acoustics
• Otolaryngology
• Public Health

Background:

• Smoking is known to negatively impact vocal health.
• Cepstral parameters are sensitive acoustic measures of voice quality.

Purpose of the Study:

• To investigate the effects of smoking, smoking duration, and smoking quantity on various cepstral parameters.
• To quantify the relationship between smoking habits and voice acoustic characteristics.

Main Methods:

• Acoustic signals of sustained vowels were collected from 301 participants (135 smokers, 166 non-smokers).
• Cepstral parameters including CPP, CPP SD, L/H, L/H SD, and CSID were analyzed using the ADSV application.
• Multiple linear regression was employed to assess the influence of smoking time and amount.

Main Results:

• Smokers exhibited lower CPP and L/H values compared to non-smokers.
• Smokers showed higher CPP SD, L/H SD, and CSID values than non-smokers.
• CPP and L/H were negatively correlated with smoking time and amount; CPP SD, L/H SD, and CSID were positively correlated.

Conclusions:

• Smoking significantly alters cepstral parameters, indicating voice damage.
• Increased smoking duration and quantity are associated with greater cepstral parameter abnormalities.
• Cepstral parameter analysis provides objective evidence of smoking-induced vocal dysfunction.