المرجع الالكتروني للمعلوماتية
المرجع الألكتروني للمعلوماتية

English Language
عدد المواضيع في هذا القسم 6092 موضوعاً
Grammar
Linguistics
Reading Comprehension

Untitled Document
أبحث عن شيء أخر
{ان أولى الناس بإبراهيم للذين اتبعوه}
2024-10-31
{ما كان إبراهيم يهوديا ولا نصرانيا}
2024-10-31
أكان إبراهيم يهوديا او نصرانيا
2024-10-31
{ قل يا اهل الكتاب تعالوا الى كلمة سواء بيننا وبينكم الا نعبد الا الله}
2024-10-31
المباهلة
2024-10-31
التضاريس في الوطن العربي
2024-10-31


Transient sounds  
  
516   10:24 صباحاً   date: 13-6-2022
Author : Richard Ogden
Book or Source : An Introduction to English Phonetics
Page and Part : 34-3


Read More
Date: 26-7-2022 683
Date: 2023-11-27 477
Date: 14-6-2022 437

Transient sounds

Transient sounds are aperiodic sounds which come and go quickly. Examples from everyday life are a knock on a door, the sound of one piece of cutlery rattling against another, or a firework exploding. In speech, the main source of transient sounds is the explosive release of a closure, such as releasing a closure for [p] or [k]. Other common transient sounds in speech are the tongue or lips coming apart as someone starts to speak, bubbles of saliva bursting in the mouth, the velum being raised, or the sides of the tongue making contact with the teeth or cheeks.

In a waveform, transients show up as a spike. On spectrograms, they appear as dark vertical lines which last only a short time.

In Figure 3.3, there are two transients. One, at about 0.25 s, corresponds to the lips opening for the sound [p], the other, marked with the box just after 0.6 s, corresponds to the tongue coming away from the alveolar ridge, for [d].

Figure 3.6 shows the waveform of a transient (the start of [d] in ‘spend’) in more detail. The transient portion T lasts less than 30 ms. It has an abrupt start and then fades away.