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  1. Jose Hidalgo

    Singing at 0.189 Hz - How is that even possible ?

    Here's some proof : https://www.guinnessworldrecords.com/world-records/lowest-vocal-note-by-a-male I knew about Tim Storms and his amazing low voice. But acknowledging that he actually 'sung' or produced a 'note' at 0.189 Hz... as demonstrated by a measurement microphone and an acoustician... I...
  2. Jose Hidalgo

    How to get rid of electronic noise within the recording itself ?

    Hi, Here's an example : https://www.deezer.com/fr/track/115029174 If you listen to this song loud enough, you'll notice there's a background electronic hum. You can notice it every time they're not singing. I have checked on several audio equipments, and the noise seems to come from the...
  3. Jose Hidalgo

    Why is Windows sample rate still not dynamic ?

    Hi guys, I've been wondering this for a while now, but I've never found a clear answer. It's one thing to set Windows bitrate to the maximum possible : in my case 32-bit since my DACs are 32-bit, so it allows for playing 16-bit or 24-bit music, with even some headroom for digital volume...
  4. Jose Hidalgo

    Measuring and comparing two headphone amps' outputs

    Hi all, So I have received my two replacement Topping L30 headphone amps (2102xxxx). They both work, but I have noticed a big sound difference :oops: One of them outputs a sound that could be considered as "normal", but the other one has way too much treble, to a point that I have to EQ it down...
  5. Jose Hidalgo

    [New EQ Software] Mega Switcher for Equalizer APO, with 15.000 EQ presets

    Mega Switcher 1.0 is now out, and it's free ! :D Check it out here : https://sourceforge.net/projects/mega-switcher/ Thanks to the many people who helped me with this app, and pushed me to make it better than I ever thought it would be ! ;)
  6. Jose Hidalgo

    [PEQ game] If you only had 3 (or 4) filters...

    [Warning 1 : if you don't like EQing and tweaking sound, please don't reply - thank you] So here's the setup : You already have a "great audio system" (HPs or speakers), nicely EQed and all. It perform great to your own ears. You are really happy. :D Alas, a lot of music recordings are far...
  7. Jose Hidalgo

    Other EQ target curves

    Hi everybody, For headphones, the most well-known EQ target curve may be the Harman one (and its variants for each headphone type : AE-OE or IE). In my experience the Optimum HiFi curve is also a good alternative when you want less bass and more midrange presence. My question would be ...
  8. Jose Hidalgo

    EQ conversion between Harman and Optimum Hifi

    Hi everybody, I asked Oratory1990 about this conversion, and he basically said : "create a Low Shelf filter, Fc = 105 Hz, Gain = -5.5 dB (adjustable to your liking), Q = 0.71". He also said that to perfect everything, we could slightly attenuate some higher frequencies (around 9 KHz), only by...
  9. Jose Hidalgo

    [Beta-testers wanted] Multi-Automation Tool (M.A.T) for Equalizer APO

    Hi everybody, I hope this is the right forum section for this. During the last few weeks, I've been working on a new tool (100% free, this needs to be said upfront) that could interest some of you. This tool is primarily intended for headphone listening, but it can easily be adapted for...
  10. Jose Hidalgo

    Importing headphone measurement files into REW

    Hi all, I'm having trouble importing headphone measurement files into REW. The AutoEQ website provides .csv files with measurements for almost every headphone, but REW doesn't seem to recognize that format. REW seems to require .mdat files, but I don't know where to find them. Any hints ...
  11. Jose Hidalgo

    Android music player with L/R inversion ?

    Hi everybody, everything's in the title I guess. Two of my headphones happen to have inverted cords. Don't ask me how that's possible. It is, I have checked thoroughly: the sound that goes through the L-labelled connector is the R one and vice-versa. Of course that has nothing to do with how...
  12. Jose Hidalgo

    [Windows] Compare the loudness of two EQed signals

    Hi everybody, I have two different Equalizer APO presets and I'd like to know their relative loudness for volume-matching purposes. For example by playing some pink noise and switching EAPO presets. Since I'd like some precise measurements as a clean basis, I won't be trusting my ears on this...
  13. Jose Hidalgo

    Should I add the same negative gain to all my EQ presets ?

    Hi guys, Currently I have 4 "main" headphones. All of them are EQed by Oratory to fit the Harman curve. Here are their preset gains : Nighthawk : -4.5 dB 99 Classics : -7.2 dB Sundara : -7.0 dB HD600 : -5.0 dB When I want to hear their default FR (which I can do instantly by pressing a...
  14. Jose Hidalgo

    Left/Right inversion

    Hi everybody, So, I have just received a new pair of headphones : Meze 99 Classics. They sound nice, I'm only a bit surprised because for unknown reasons L and R seem to be inverted :oops: Here are my tests : Left/Right test : The L signal ALWAYS seems to come out of the connector labelled...
  15. Jose Hidalgo

    Stereo to Binaural via HRTF

    Hi guys, Have you heard of HRTF (head-related transfer function) for our headphones ? ;) https://www.wikiwand.com/en/Head-related_transfer_function More importantly, did you know that the IRCAM (french resarch institute) has put online about 50 test sounds simulating a 3D environment, so you...
  16. Jose Hidalgo

    [Advice needed] L30 vs. A50s + Custom cables - Pros/Cons ?

    Hi everybody :) This is more complicated than it seems, so I've split this post into several parts (everything is correlated). Thanks in advance to ASR experts for their precious help ! ---------- As some of you know, I have two L30 that I'd like to replace because of the potential risk for my...
  17. Jose Hidalgo

    Cheapest possible 6ch USB sound card that works with Win 10 ?

    Hi everybody, title says all :) I currently have one of these cheap AliExpress soundcards , bought many years ago (well, it looks the same but it may not be the same inside - mine is a CM106 apparently, but nevermind). It worked perfectly until today when it stopped working (checked on two...
  18. Jose Hidalgo

    [DIY] Custom Listening Station v1 (pics inside)

    Hi guys, Here are some pics of our DIY Custom Listening Station v1, aka CLS (for clearer sound obviously, because CLS, pun intended :facepalm: ) As some of you know, it's based on : 1 Windows 10 laptop as source 2 USB DACs (Topping E30) 2 Headphone Amplifiers (Topping L30) A collection of 5...
  19. Jose Hidalgo

    [FULL TUTORIAL] Dual headphone listening with individual PEQing

    Hi everybody, This is a happy follow-up of previous ASR threads like this one. I have some revelations to make. This is the first one : WE HAVE COMPLETELY SUCCEEDED. IT HAPPENED NEARLY ONE WEEK AGO (but I needed some free time to write this). ASIO4ALL DETECTS BOTH TOPPING USB DACS IN OUR...
  20. Jose Hidalgo

    Samplerates, (over/re)sampling, artifacts, intermod distortion, aliasing...

    Hi all, I've recently watched this video, and I've found it highly interesting and instructive so I wanted to share it : I strongly suggest that you watch it if you want to be able to participate in this topic. What the video shows isn't subjective : it's objective measurements. Of course...
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