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  1. miero

    [technology] Qualcomm DDFA: Direct Digital Feedback Amplifier

    Chips with DDFA technology allows to build "amplifiers without analog input". It was developed by CSR company: Source: https://www.businesswire.com/news/home/20120501005208/en/CSR-Strengthens-Audio-Platform-High-Fidelity-Class-D Here are expected performance stated by the current owner...
  2. miero

    EMM Labs DV2 DAC reviewed by Stereophile

    https://www.stereophile.com/content/emm-labs-dv2-da-processor-measurements https://www.stereophile.com/content/meitner-emm-dv2-dsd-mqa-digital-audio (interview with Ed Meitner) EMM Labs seem to be capable to create a perfect DAC, but they decided to use slow reconstruction filter that degrades...
  3. miero

    Show new posts with their content?

    Would it be possible to enable displaying of new posts including their content? Scroll wheel is faster than clicking... The latest activity page is a good start, but it does not contain full posts and it contains a lot of non-interesting stuff, like likes...
  4. miero

    Additional measurement for USB DACs - immunity to a ground loop

    @amirm I suggest a following measurement for detecting possible USB interference issues for USB DACs. Sine 942Hz at various volume levels (e.g. THD+N vs. dBFS) for two highest sample rates supported, e.g. 352.8 and 384kHz. The 942Hz and its harmonics should not hide possible peaks of USB...
  5. miero

    HOWTO: SoX audio tool as a signal generator

    SoX tool might be a very good reason to start learning how to use a command line. It allows to generate simple signals such as sine or square, combine them in various ways and apply many filters in a row using just several text keywords and numbers. Initially SoX was created for Linux operating...
  6. miero

    Audio specifications come with conditions

    Rane has a very useful Note about caveats of commonly used and discussed audio specifications. - https://www.ranecommercial.com/legacy/note145.html Content saved in PDF: https://www.audiosciencereview.com/forum/index.php?threads/audio-specifications-come-with-conditions.4038/post-370811 EDIT...
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