Asking because I'm not smart enough: Is this kinda similar to what the Sonos Trueplay feature does? (Where you move your phone, and/or a mic-enabled speaker itself, around the room so that it plays and measures various frequencies to calibrate) https://support.sonos.com/s/article/3251?language=en_US https://patents.google.com/patent/EP3531714A2/
Show HN: HiFiScan, a Python app to optimize your loudspeakers
91–100 of 110 posts
Re: Show HN: HiFiScan, a Python app to optimize your loudspeakers
#92I'm not an audiophile in the obsessive-compulsive sense, but I've been recording music in my home studio for 20 years and I know my way around it. This sort of calibration is not ideal. Not only are you measuring with a device that has an imperfect response curve, but you are also measuring the room at a single monophonic point in space. The way that sound interacts with the room and your ears is far more complex tha…
> Ultimately, this is a bandaid for a poorly treated room. If you're serious about getting a flat response curve from your monitoring room, you're far better off learning how to treat the room properly and how to position your monitors within the room for the best results.
Well, doh, but it costs zero dollars and very little effort.
Re: Show HN: HiFiScan, a Python app to optimize your loudspeakers
#93Earlier quoted context omitted.
That's the 'device with an imperfect response curve', I assume. In fairness, the readme does state: > A good microphone is needed, with a wide frequency range and preferably with a flat frequency response. By 'preferably' I assume it's implied that it can curve-fit (whatever's needed, I know next to nothing about this) to a non-flat microphone response, as long as it's known, but if it's flat then no need. If it's un…
Here's a measurement standard mic: https://earthworksaudio.com/measurement-microphones/m23/
Re: Show HN: HiFiScan, a Python app to optimize your loudspeakers
#94I'm not an audiophile in the obsessive-compulsive sense, but I've been recording music in my home studio for 20 years and I know my way around it. This sort of calibration is not ideal. Not only are you measuring with a device that has an imperfect response curve, but you are also measuring the room at a single monophonic point in space. The way that sound interacts with the room and your ears is far more complex tha…
Re: Show HN: HiFiScan, a Python app to optimize your loudspeakers
#95Earlier quoted context omitted.
> If you genuinely believe that doing a seance to drive out the poltergeist from your speaker set up will make the sound better, it will be difficult to convince you otherwise I think you just found the next big thing in audiophile fads
I'm more interested in inviting the right kind of poltergeist to dwell in my speaker set up, to give playback the warm paranormal sound that is clearly missing from sterile exorcized speakers.
Re: Show HN: HiFiScan, a Python app to optimize your loudspeakers
#96Earlier quoted context omitted.
i always wondered, is it possible to take a cheaper mic or iems and "flatten" them via an eq, to perform nearly as well as professional gear that's 3x the price? i just picked up a pair of KZ AS06 iems [1] and my listening preference is U shaped (which is how these are dialed in out of the box), but i imagine with quality hardware and e.g. 3+ dedicated, drivers it should be possible to flatten them out in an eq. [1]…
Yes, but no, but yes. AutoEq ( https://github.com/jaakkopasanen/AutoEq/ ) does something like this so... yes? But targets various HRTF curves which aren't neutral or flat, and they usually aim for a Harman target of sorts, so no... But there are some neutral-sounding curves that seek to just emulate pinna gain, so they have a ~3KHz peak which is required to 'emulate' the natural resonance of your ear, which you don't…
https://www.reddit.com/r/headphones/comments/afsro3/review_o...
Re: Show HN: HiFiScan, a Python app to optimize your loudspeakers
#97What qualifies as good enough?
Is it worth trying with consumer mics like the ones built ins on phones and laptops?
Re: Show HN: HiFiScan, a Python app to optimize your loudspeakers
#98I'm not an audiophile in the obsessive-compulsive sense, but I've been recording music in my home studio for 20 years and I know my way around it. This sort of calibration is not ideal. Not only are you measuring with a device that has an imperfect response curve, but you are also measuring the room at a single monophonic point in space. The way that sound interacts with the room and your ears is far more complex tha…
It does however look great for helping me characterize differences in my 3D printed headphone designs. My old resin-printed design has incredibly good bass, and when I changed things up for FDM printing I lost all that low end. I need to try adjusting my design and quantifying the results, as I love the sound of my resin-printed design but would prefer to move to FDM designs as they are much easier to print and make.
https://twitter.com/TLAlexander/status/1569181219446980608
The 50mm headphone drivers were globally out of stock for a year so it is safe to assume the new drivers are from a different manufacturing batch. But my hope is that the problem lies in my headphone design, and the new and old drivers are roughly the same. I don't know anything about headphone design and seemingly got lucky with the old design, so if I need to adjust my new design that's not a big deal. But if the new drivers aren't performing like the old ones, I may not be able to fix things. So next step will be to swap drivers from the old and new headphones and see if the problem follows the drivers or the headphone design.
Images of the old design as well as the link to the onshape files on this git repo:
Re: Show HN: HiFiScan, a Python app to optimize your loudspeakers
#99Earlier quoted context omitted.
It does however look great for helping me characterize differences in my 3D printed headphone designs. My old resin-printed design has incredibly good bass, and when I changed things up for FDM printing I lost all that low end. I need to try adjusting my design and quantifying the results, as I love the sound of my resin-printed design but would prefer to move to FDM designs as they are much easier to print and make.
Here's an image comparing my old headphone design with good bass in blue, and the new easier to make design with bad bass in red: https://twitter.com/TLAlexander/status/1569181219446980608 The 50mm headphone drivers were globally out of stock for a year so it is safe to assume the new drivers are from a different manufacturing batch. But my hope is that the problem lies in my headphone design, and the new and old dri…
It'd be most interesting to see them.
Re: Show HN: HiFiScan, a Python app to optimize your loudspeakers
#100Earlier quoted context omitted.
Here's an image comparing my old headphone design with good bass in blue, and the new easier to make design with bad bass in red: https://twitter.com/TLAlexander/status/1569181219446980608 The 50mm headphone drivers were globally out of stock for a year so it is safe to assume the new drivers are from a different manufacturing batch. But my hope is that the problem lies in my headphone design, and the new and old dri…
Measurements (particularly, FR and distortion) aren't there or are hard to find. It'd be most interesting to see them.
What I wanted to do was build a little headphone test dummy head. But for my relative tests I just shoved my podcast mic, Audio Technica AT2005USB up to the center of the driver on one side of the headphone. Do look at my linked tweet for those FR curves.
However this little adventure has encouraged me to consider building the little head dummy. I have some nice little capsule mics I was playing with that would work nicely, and I have a datasheet for those that probably includes a curve.
This hobby work of mine goes slowly, but I appreciate your suggestion. I will try to tune up my FDM 50mm headphone design so that it sounds at least as good as my original resin printed design, and then look at building a better characterization rig.