Earlier quoted context omitted.
"As a result Japanese people (probably Chinese too) have a hard time processing some of the English syllables. This creates difficulty in learning English for Japanese and Chinese." We can also say that American/English have a hard time processing some of the Japanese/Chinese syllables. All the languages I speak a little bit have distinctive sounds that are difficult for most non-native speakers to master unless you…
What I am saying is that in English, after learning 26 letters, you can read any combination of them. If you try to see how many possible syllables there are, there would be many thousands. Combinations like "eng" "lish" can't be properly put in Japanese phonetic characters because you can't put "eng" directly, you have to use "en gu ri shu", inserting vowels all over the place. Japanese can't properly learn English…
As an aside, one side-benefit of a language that doesn't have so many phenomes is that automatic speech creation is much easier.
That's speech creation, not speech recognition.
Using software to speak Japanese fluently, at a given pitch, with a given emotional context is a solved problem. There's even software that can be used to create singing voices.
It only takes about 1000 recorded sounds to do so. In english, it'd take 10,000 multiplied by the number of emotional contexts and speech patterns you'd like to mimic.