Recent content by fxdung

I like to know mechanism of making sound to easy the learning English.Do we need to narrow vocal cords in lower pitch sound?

Does unstress syllable in English have creaky-voiced?To low in pitch and small in amplitude of the sound, the gap between vocal cords must be small.Is that correct?I do not know whether we narrowed the vocal cord(glottis) or not in unstress syllable in English?

Then what is he said in the whole sentence,because it seems that the transcript and the audio not coincide with each other?

Please say if my ear is wrong. It is"....final time that I will be teaching this class"I hear "this class" as "fass" Here is audio file Time is about 3:60

Is that my ear hearing wrongly because he is physics professor?It is MIT open lecture. May it be that he speak as that?Can be he makes a elision when he saying:"....final time that I will be teaching this class. So I am pretty excited about it"

I mean contraction being shorten two words adjacent into one word.Eg can we contraction "this" and "class".?I hear "this class" as "thass" when he speak very fast.

Can we make a contraction between two any words next to each other in English? Eg Can we make contraction between adjective and noun stand next to each other in English?

I hear that when speaking English very fast, they can prepare the next sound(s)(consonant or vowel) at the time of pronouncing before sound. So there can be a partly blending of sounds when speaking very fast. Is that correct?

Photon is real object, a gamma photon can create a pair electron and positron. But if photon is a reality object then why itself is not a inertial frame so in this frame its velocity is equal 0?

I mean eg one vowel is not the same when we pronounce may time or by many people or by different contexts

It seems that a sound (eg aa, ah, ih...) has a variable range of sound.I know that the before is affected by the follow, eg ''d" in do and did are different. Are there any other rules for the variation range?

In this video that the link is below, there is a phrase: "where I spoke in Egypt" ,time is about 0:12. I hear "where" as "w+schwa".Is that correct or my ear hearing wrongly?

I am very difficult to hear unstress sounds in English. I guess unstress sounds is made when glotis is more narrow.

Is that correct: in stress sound the glostis is more open and in unstress sound the glostis more narrow?

Is this correct: to make voiceless sound the glotis more open and more tense; to make voice sound the glotis more narrow and less tense?I don't know how to make the vocal cord vibrate and to make it not vibrate?