Forum Replies Created

  • Take Vos

    December 21, 2006 at 9:39 am in reply to: Question for Ty

    Hi Ty,

    I guess you are right, I mean most people think mp3 files are CD quality.
    As for “because we can” argument, right now HD-DVD offers (lossless compressed) 5.1 surround 24 bit / 96 kHz. And most new consumer amplifiers can handle this now as well (it is in the HDMI standard).

    And I guess high frequency recording is nicest for people creating special effect, who routinely slow down recorded audio to design interesting sounds.

    Cheers,
    Take

  • Take Vos

    December 21, 2006 at 9:36 am in reply to: Question for Ty

    Hi Ty,

    I guess you are right, I mean most people think mp3 files are CD quality.
    As for “because we can” argument, right now HD-DVD offers (lossless compressed) 5.1 surround 24 bit / 96 kHz. And most new consumer amplifiers can handle this now as well (it is in the HDMI standard).

    And I guess high frequency recording is nicest for people creating special effect, who routinely slow down recorded audio to design interesting sounds.

    Cheers,
    Take

  • Take Vos

    December 20, 2006 at 2:05 pm in reply to: Question for Ty

    Hello Ty,

    I have done some research in sample conversion and found the following gem. You virtually get a higher bit depth when recording at a higher sample rate (if the AD converter keeps its absolute accuracy at higher sample rates). In the 80’s we would have called this oversampling.

    Imagine the following four samples recorded at 192 kHz.
    0.00, 0.25, 0.50, 0.75

    If this gets naively down converted to 96 kHz you get:
    0.125, 0.625

    If it gets down converted to 48 kHz you get:
    0.375

    Each sample rate conversion step, gains you one bit of precision.
    Actually 24 bit AD converters do this internally, they sample at a high sample rate at low bit depth and then down converts the sample rate.

    In principle you don’t have to down convert at all, you can send 192 kHz to the speakers and the analogue filters and mechanical limitations would do the sample rate conversion for you.

    Cheers,
    Take Vos
    developer of Boom Recorder

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