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Focus Fidelity

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  1. One of these works well, https://jtechdigital.com/articles/how-to-guide-jtd18g-h5ch-jtd-322-4k-60hz-hdmi-audio-extractor/
  2. I have several customers running Focus Fidelity (https://www.focusfidelity.com/) software on a windows via bootcamp on a Mac. Perhaps not ideal for a Mac user but the ease of use they find in the application itself tends to make up for that, you can still use the filters exported from the Focus Fidelity software in mac applications. You might also like to consider https://accuratesound.ca/products.html as a solution for playback.
  3. Hi, Thanks for taking the time to share your experience in detail. Tweaking the target curve is to be expected in general, while the initial target is a best fit through the measurement data it can still also be a large change from what you might be used to or simply not be what you prefer. If you do find yourself with any questions or have anything you'd just like doubled checked simply e-mail your project file to the Focus Fidelity support e-mail address. Kind regards, David
  4. It's fairly complex, some of the relevant math https://en.wikipedia.org/wiki/Hilbert_transform Time domain performance is the end goal really, an example showing a waterfall plot and step response can be found here https://www.focusfidelity.com/solutions
  5. If the dip is minimum phase it will apply boost (gain) with matching phase shift to improve both the frequency response and impulse response.
  6. Brand new convolver product https://accuratesound.ca/products.html For filter design check out our product here https://www.focusfidelity.com/
  7. The software focuses on attenuating resonant modes and improving time domain criteria (ringing, step response, excess phase). Boosting a sharp dip/notch will result in a filter with significant ringing (pre or post depending on if the dip is minimum or maximum phase) so the software will seek to largely ignore the dip. The relationship between phase, time domain and magnitude response gets rather complex and mathematical quickly.
  8. Hi, It will apply boost when the measured frequency response is below the target, the maximum amount of boost is adjustable (on the filter magnitude page). I should also point out that the software determines which dips/notches are not minimum phase and limits to the boost to those areas even further. This gives a more optimal result in the time domain.
  9. It also reminded me of the Mola Mola DAC in as much as there appears to be a single bit stream shifted through a series of single bit registers. The paper describing the operation of the Mola Mola DAC is here https://www.hypex.nl/img/upload/doc/an_wp/WP_AES120BP_Simple_ultralow_distortion_digital_PWM.pdf
  10. Hi @dm68 The filters are exported as stereo *.wav files so both channels in one file. There is no feature right now to export as mono *.wav files. I can however add this as a feature if needed.
  11. Hi @Confused, Yes, a dedicated module for performing measurements will be released but is likely several months away. This will have a workflow that makes it easy to perform measurements of multiple speakers in multiple positions. All settings will have suitable default values and a good step by step user guide will be included. It'll be tested thoroughly with the UMIK-1, UMIK-2 and a Dayton EMM-6 plus USB audio interface. If you're up and running doing measurements with REW then I think you'll find the learning curve with the filter design software straight forward and you should be generating filters within an hour by following the user guide https://www.focusfidelity.com/FFDManual.pdf Kind regards, David
  12. Hi @Confused Our software is intended for conventional Hi-Fi layouts and we expect this to be the most common use case. Once you have a set of measurements and are familiar with our software you'll find it only takes a few minutes to make adjustments and generate a new filter. Kind regards, David
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