I've always been puzzled why in all my Nokia phones from N93 onwards, why Nokia cannot replicate the audio recording that is saved into video with the standalone audio recording app.

Here's some samples from the N900 handling a very loud live band - Platform Six :

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unlike most other non-Nseries phones, the audio is relatively clear and not muffled.

Here's a different sample set of some buskers, not so loud.

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The main reason I want voice recorder app quality to match audio from video is that I use my phone to record lectures. As big as memory is on the N900, it's going to be pretty quick to munch up 900,000MB of 50 minute lectures.

Is there any limitation, creating voice recorder app wise, to using the full potential of the N900's microphone?