Chinese · Pronunciation Guide
ting with a strong puff of air, high and flat. The ending is the back nasal of "sing", not a front n.
tīng
Fixed high, in every context. It appears constantly in verb-complement structures, and there the tone of the following material matters more than its own: in tīng bu jiàn, the negator between the two verbs is toneless, so the phrase runs high, nothing, falling.
Listen: 听
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我听不见。
Wǒ tīng bu jiàn.
I can't hear you.
Listen: 我听不见。
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我听不见。 is exactly that structure. Wǒ dips, tīng holds high, bu is completely toneless because it sits inside a potential complement, and jiàn falls. Note that this is neither bù nor bú — the sandhi rules do not apply because there is no tone left to change. Four syllables and only three of them carry pitch.
Two errors. Under-aspirating gives dīng, a different word, and English speakers reduce aspiration on unstressed verbs habitually. Second, the nasal drifts forward to tīn, which is not a Mandarin syllable at all but sounds acceptable to an English ear. Feel for the back of your tongue rising to close the sound while the tip stays down.