Speech production the larynx that then is modified by the vocal tract into different vowels and consonants. However speech production can occur without the use of the lungs and glottis in alaryngeal speech by using the upper parts of the vocal tract. An example of such alaryngeal speech is Donald Duck talk. The vocal production of speech may be associated with the production of hand gestures that act to enhance the comprehensibility of what is being said. The development of speech production throughout an individual's life starts from an infant's first babble and is transformed into fully developed speech by the age
Complete Vocal Institute to detect the various vocal modes. Currently (2012) Cathrine Sadolin and Julian McGlashan are researching the terminology used in describing singing and the use of the voice. Together with sound specialist Eddy B. Brixen (from DPA) and EBB-consult, there is ongoing research in making spectral analysis of the sound spectrum, the voice produces with the various modes. In addition to testing the techniques in a scientific way another goal is that an outsider will be able to identify the different voice modes on a purely objective basis, without prior knowledge of singing. Complete Vocal Institute Complete Vocal Institute (often abbreviated