拼音有關consonant的問題

voiced and voiceless 同埋 aspirated and non-aspirated (即你所講的送氣/不送氣) 係兩回事黎架喎.....

其實好簡單架咋, voiced o既音o既即係發音o個陣你個聲帶會震, 而 voiceless 即係你發o個音o個陣個聲帶唔震. 所以當你發一個音o個陣, 你摸住個喉嚨. 如果你 feel 到有震動的話, 即係你發緊o個個係 voiced sound. 否則便是 voiceless 啦.

而基本上, 所有 vowel 都係 voiced o既. 而 consonant 呢, 你就可以睇返個 consonant chart. 呢個 chart o係大部分o既字典都應該會搵到架啦. (好可能印o左o係最前/最後)
(其實即使唔搵字典, o係網上都應該有大把 consonant chart, 就好似以下呢個咁:
http://www.umanitoba.ca/linguistics/russell/phonetics/ipa/ipa-consonants.html)

o係 consonant chart 裏面, 每一格寫o係右手邊o個個係 voiced sound, 而寫o係左邊的是 voiceless. e.g. o係第一格度, /p/ 係 voiceless, /b/ 係 voiced. 所以呢個表都應該解答到妳關於 [θ]同[ð] 的問題啦.

如果你想再知多 d 的話, 我諗你就要研究一下 phonetics 啦~ ^o^
希望幫到你啦~!

你可以發廣東話音的波和婆。波是不送氣的p(unaspirated p)，而婆是送氣的p(aspirated p)。若果先唸個唔字，然後很快接著唸個波字，你的波字該受到個唔字的影響，變成個bo，而b就是voiced的音。

beak (b=voiced) / peak (p=aspirated voiceless) / speak (p=unaspirated voiceless)

[ð]是voiced，如these, those, that中的th
[θ]是voiceless，如thin, thief, through中的th

my advice to you is that you need to have a handbook of phonics. There is a TABLE in the appendix showing you which are the voice and voicless consonants. for example: "P" is voiced and "B" is voiceless.

the 2 vowels
[θ] voiceless

[ð] voiced

I really urge you to buy a phonetic handbook. please double check the items I sent you.