Recent content by http://hifi-apps.com/

I have tried a few things in this direction: www.hifi-apps.com/mic_calibration.en.htm The apps allow the upload of files for microphone calibration in txt format, details are described in the setup menu.

Hello, I have slightly extended the room acoustics measurement algorithm from "Room Acoustics Meter" and "Speaker Setup" to calculate so-called "digital room corrections". For those who are new to this, the explanation is in the link below, the technology as such has long been established and is...

I have not yet programmed a FIR Convolution to play soudtracks. But there are some approaches in the open source pool, e.g. "James DSP Manager", to create an app for current Android systems the code would have to be re-worked. Privately I use acourate for Windows, with it you can create FIR...

Ok, next release is out. Thanks, some of the hints are implemented Stereo Recording: measuring with stereo - mic, i.e. 1 logsweep, 2 recording channels is now possible. You get 2 waveforms analog to a normal measurement with 2 sweeps on 2 speakers and a normal microphone. For stereo microphones...

Thank you. Multi-channel recordings: This requirement already came from a headphone forum (for HRTF or ear canal measurements with in ear microphones). I have raised the priority, but don't want to promise anything yet. A combination of configurable additional information (notes, "caution...

Thx, interesting point. For results that must be reproducible on another device, an external measurement microphone must be used. A calibration curve can be loaded for this purpose. On https://www.hifi-apps.com/mic_calibration.htm I have shown some comparison measurements with measurement...

First of all thanks for the previous thread, the previous app "Speaker Setup" has some 10k downloads by now after all. I continued to use the measurement algorithm from "Speaker Setup" for a new app: "Room Acoustics Meter" offers a more technical approach. Compared to typical Windows programs...

Before development, I measured the entire sound field of a room in 1 m grid and 1 m height to get an overview. This showed that at some distance from the loudspeakers you get results that are at least mathematically (Helmholz equations) comprehensible. Near the loudspeakers my results were so...

I am not aware of having blocked anything. Allowed devices: Cell Phone + Tablet. Android Sdk version 22 (a.k.a. 5.2 "Lollipop") or later. An alternative link for installation is https://play.google.com/store/apps/details?id=com.hifi_apps.sp_setup Some Android devices use this link to open...

Thank you, there may be several who think so. This beta version is already in the Play Store. In contrast to an app in production, the user only has to explicitly confirm his participation in the beta program before installation: The software doesn't have the maturity of an app in production and...

Oops, sorry, I had not yet released it for other countries in the Play Store. I hope it works now.

BETA TESTER WANTED FOR HIFI-APPS SPEAKER SETUP - ANDROID There is a lot of material about the interplay of loudspeaker, room and what can be perceived out of it. I am a physicist (software developer) and have bundled some of it in an app. It started as an after-work project to get to know a...