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Title: HDCD encoded file and arch prediction upsampling Post by: Suteetat on February 21, 2010, 04:45:28 pm Quick question, when playing HDCD encoded file at 16/44.1 or HRx 24/176 file, my Berkeley DAC HDCD light lit up as expected but when I play
16/44.1 file with 4x upsampling/AP, HDCD light does not light up. Is this something that is expected? I am using the current 09-6 version with peakxt selected. Same thing also happened with 09-5xx with 4x upsampling/AP as well. Title: Re: HDCD encoded file and arch prediction upsampling Post by: Robin Hood on February 21, 2010, 05:05:38 pm I thought the HDCD light on the Berkeley DAC was a convenient, though indirect, flag to show whether the digital playback was bit perfect or not. Upsampling may or may not sound better, but it is not bit perfect.
Title: Re: HDCD encoded file and arch prediction upsampling Post by: manisandher on February 21, 2010, 05:28:15 pm Exactly. Any form of upsampling will change the LSB and the HDCD light will not come on. So technically, you're ruining the HDCD decoding by applying AP.
BUT... I've done extensive listening and in my system, QAP sounds better than 'HDCD'. My DAC has the old PDM100 filter/decoder chipset which I believe was the best filter available at that time... but no match for QAP! My understanding is that the filter in the BADA is better than the PDM100. Better than DAP? Maybe. Better than QAP? I doubt it... Mani. Title: Re: HDCD encoded file and arch prediction upsampling Post by: Suteetat on February 22, 2010, 01:03:19 am I see, thanks for the clarification. I am still on the fence regarding QAP. it sounds better with most recording while
I prefer no QAP some recordings. |