An Audiophile Midterm<\/p>\n
As I sit on Southwest Flight 2708 from Los Angeles to Chicago on my way to the New York Audio Show (the second leg of the flight flies to La Guardia), I thought it might be interesting to pose a series of questions that will let you know how much you know about the subject of high-resolution audio. After all it is midterm time at the university.<\/p>\n
Below I present 10 questions. Answer them as best you can and tomorrow, I\u2019ll provide the answers and briefly discuss the items. Let\u2019s see how much you know about HRA.<\/p>\n
1. What is the nominal dynamic range of a standard 2-channel stereo analog tape master?
\n\tA.\t96 dB
\n\tB.\t60 dB
\n\tC.\t45 dB
\n\tD.\tInfinite
\n\tE.\tNone of the above<\/p>\n
2. Which of the following listed formats qualify as HRA?
\n\tA.\tVinyl LP
\n\tB.\tAnalog Tape
\n\tC.\t44.1 kHz\/16-bit PCM
\n\tD.\tDSD 64
\n\tE.\tNone of the above<\/p>\n
3. True or False: Any analog recording that has been transferred to a 192 kHz\/24-bit PCM digital file is considered high-resolution audio.<\/p>\n
4. How many digital bits are required to capture the dynamic range of a typical pop\/rock CD release?
\n\tA.\t1-bit
\n\tB.\t8-bits
\n\tC.\t24-bits
\n\tD.\t4-bits
\n\tE.\t16-bits<\/p>\n
5. Which items below are true with regards to Dolby Digital (AC-3) encoding?
\n\tA.\tIt throws away some of the audio data in the uncompressed track
\n\tB.\tLimited to 5.1 surround sound encoding
\n\tC.\tUses data rates from 192 to 1500 kbps
\n\tD.\tOriginated as Meridian Lossless Packing and became Dolby TrueHD
\n\tE.\tAll of the above<\/p>\n
6. Spreading audiophile \u201cgels\u201d or other \u201cenhancement\u201d liquids on optical discs can
\n\tA.\tIncrease low level details and resolution of the music
\n\tB.\tTighten up bass instruments resulting in more low-end definition
\n\tC.\tImprove the rhythmic pacing of recorded music
\n\tD.\tMinimize digital errors passed to the optical pickup
\n\tE.\tAll of the above<\/p>\n
7. True or False: Analog recordings have \u201cinfinite\u201d resolution and are therefore more accurate than digital recordings, which use small stair steps to encode audio.<\/p>\n
8. True or False: Increasing the number of bits in your digital samples increases the resolution of a recording.<\/p>\n
9. Dither is a digital process that?
\n\tA.\tAdds noise thus reducing the dynamic range of a PCM recording
\n\tB.\tRandomizes the least significant bits of a PCM digital word
\n\tC.\tReduced the dynamic range of a Redbook CD from 96 dB to 93 dB
\n\tD.\tRequired to ensure that digitization errors are equally spread
\n\t\tthroughout the frequency spectrum
\n\tE.\tAll of the above<\/p>\n
10. True or False: A DSD 64 recording with a sampling rate of 2.8224 MHz has 64 times the fidelity of a standard CD with a sampling rate of 44.1 kHz.<\/p>\n
So there you have it. The first Real HD-Audio Midterm\u2026ten simple questions that shouldn\u2019t be too difficult to answer\u2026especially if you\u2019ve been reading my posts for any length of time.<\/p>\n
Check back tomorrow and we\u2019ll discuss the answers.<\/p>\n","protected":false},"excerpt":{"rendered":"
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