Lacroix, A.A.LacroixMakai, B.B.Makai2022-03-082022-03-081982https://publica.fraunhofer.de/handle/publica/313191A cascade of variable length uniform tube sections is used as basic model for a vocoder principle with typically 4-5 tube sections. The quality of vocoded speech has been investigated by subjective evaluation, by computation of spectral distances and resonance locations.enencodingspeech analysis and processingspeech intelligibilityvocodersvocoder schemevery low bit ratesquality evaluationtube sectionsvocoded speechspectral distancesresonance locations621A vocoder scheme for very low bit rates (quality evaluation)conference paper