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yamamoto2002

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About yamamoto2002

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  1. I agree, it is needed to have “métier” to produce an art.
  2. There is more appropriate forums, such as gearslutz for this kind of question. Maybe enabling pad switch to reduce input signal magnitude by 20dB and cracking problem will be solved. Or reverting driver to version 1.0.4, and check if your hypothesis is correct or not.
  3. Onboard audio codec chips are connected to south bridge with PCIe. On X570 Aorus Xtreme motherboard, Realtek ALC 1220VB audio codec is used. This audio codec connects to ESS Sabre DAC. ALC 1220 uses "High Definition Audio" protocol. This High Definition Audio protocol for PCIe audio is equivalent to USB Audio Class protocol of USB DACs. HDMI audio also uses High Definition Audio protocol. https://www.intel.com/content/dam/www/public/us/en/documents/product-specifications/high-definition-audio-specification.pdf Studio PCIe/PCI cards such as RME Hammerfall, Echo Layla 3G, Lynx AES16e etc has proprietary protocol.
  4. You can choose camera position, camera direction, lens focal length (field of view), focus and depth of field after taking the picture!
  5. This is some sort of Realtek ALC 1220 of Asus Z370-i motherboard. I think this is pretty good for motherboard analog audio output. RMAA result. Click image to enlarge. Measurement setup. +0dBFS 1kHz sine wave output. Frequency is accurate. Output voltage is 2.2V RMS. Analog reconstruction filter is brick-wall linear-phase. It seems high frequency noise is well suppressed.
  6. I think this is the future of photography... And it is Leica!
  7. I'd like to answer to this question. Modern music is tuned A=440Hz and fundamental frequency of lowest keys of piano is showed in the following pic. How to determine lowest pitch tone frequency Use WaveGene or your favorite tone generator to generate sinusoidal continuous tone, say 55.0Hz (A1, ra), hear it and understand what A1 sounds like. Listen to music, lowest sound instrument, and determine lowest pitch Examples Lowest freq = 25.96Hz, As0 https://www.youtube.com/watch?v=p0DlTQ-bBMM C1 As0 B0 on 1min 46sec Lowest freq = 30.87Hz, H0 https://www.youtube.com/watch?v=OXq-JP8w5H4 Fis1 Cis1 H0 Cis1, lowest is H0 = 30.87Hz https://www.youtube.com/watch?v=aZOGcaU7q1A Lowest freq = 32.70Hz, C1 https://www.youtube.com/watch?v=svpw1AlIY1o https://www.youtube.com/watch?v=SB8-YY2DyHI https://www.youtube.com/watch?v=ooHII67__Sg?t=33s G1 D1 E1 C1 https://www.youtube.com/watch?v=B9Yc7BMQPH0 A1 G1 D1 C1 https://www.youtube.com/watch?v=MCcekcmyEQs F Des Es C https://www.youtube.com/watch?v=nQcUJdncTeg F C Des Es Lowest freq = 34.65Hz, Cis1 or Des1 https://www.youtube.com/watch?v=y7d9VLRO3vc F Es As Des https://www.youtube.com/watch?v=ONdlP-nxo3g Cis Lowest freq = 36.71Hz, D https://www.youtube.com/watch?v=IFM6kcRNcIs D Fis https://www.youtube.com/watch?v=1MHA2hBsGwc
  8. Nowadays digital image sensor performance surpassed emulsion film in every aspect. Last stronghold of emulsion film was medical x-ray photography but it is now replaced with digital sensor and radiation dose is reduced by increased sensor sensitivity.
  9. Or maybe the USB DAC firmware has a bug when incoming stream's DoP marker abruptly ends and PCM silence (zero sequence) starts and DAC plays the PCM zero sequence with 1bit audio mode and DAC output voltage descent perpendicularly to lowest possible voltage. This can be prevented and not DoP's limitation
  10. Using 18AWG 30 meter speaker cable, dumping factor of your system is reduced to 3.3 if your speaker is 4Ω, 6.7 if your speaker is 8Ω. It is tube amp level of low dumping factor. Reducing the length to 3 meter, dumping factor will be improved to 60 on 8Ω speaker, 30 on 4Ω speaker. If you'd like to hear/measure SQ difference of dumping factor difference, it is better to start with extreme cases
  11. There is very small performance improvement in new versions, changing some struct data pass-by-value to pass-by-reference. Maybe it is too small to be observed by benchmarking. (If this part of code is called very frequently, new version code runs slightly faster, lower CPU load and less power consumption (CPU/compiler dependent, may be there is no difference at all for some system) ), but it is good thing for programmers' peace of mind. I'd rather choose newer version than 1.0.29.
  12. 6K monitor will be very useful for 4K video editing, which need to display 4K video and additional UI for editing. I always think 5K monitor is not sufficient for 4K video editing. Also 1,000 nit Display HDR 1000 is nice to have feature Same logic is applied to 8K video editing, I'd like to have 12K monitor to edit 8K video
  13. I skimmed through ALSA source code change from ALSA library 1.0.29 to today. 4 years passed and 40,000 lines of code are changed. But I cannot found SQ altering change. (There may be overlooked big change) I think the biggest change of core program since 1.0.29 is new PCM 20bit quantization bit rate support (for exotic hardware) and new `topology' software mechanism. Others are rather new features and new hardware support such as: New hardware support of Digidesign Digi 002/003, Tascam Firewire, Line6 USB processors, Motu Firewire, RME Fireface, USB Sound Blaster HD, Xonar U7, Phiree U2SX, Imagination cXT200 SoC, Raspberry Pi VC4 HDMI audio, Realtek ALC1220, Intel Skylake HDMI audio, and myriad of new devices Intel HDMI/DisplayPort Audio configuration Added SoC firmware control functions New I/O API for audio timestamp hardware New I/O API for hardware sound level meters New I/O API for hardware DSP control and mixer volume control New thread safe API with lock mechanism Python programming interface update ALSA sound config directory management code updates
  14. Pitch is whole tone lower E L I Es E becomes D L I Des D
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