Decompress then navigate to demo\tuner and click bFlatTrumpet.bat.
It has fast response yet less flicker than some other tuner apps.
u/BatchModeBob — 10 days ago
u/BatchModeBob
▲ 3 r/DSP
Audio to midi solutions have a bigger hype to performance ratio than any audio technology I can think of. All of the demos obscure flaws by either mixing the source audio with the midi play back, defaulting the midi instrument to piano with lots of sustain to hide detail, or by producing audio full of overwhelming reverb. Sounds so musical for a couple of seconds.
By targeting only solo wind instruments, this app is able to outperform all other audio to midi converters. Of course, few if any people actually want a midi conversion app that's limited to solo wind instruments.
The app builds 100% from the included C code. No C++. No DSP or pitch detection libraries. No FFT (uses IIR filter bank). No single precision. Filter bank is fully vectorized and multithreaded. Reads most popular audio formats.
Bad stuff:
Requires Windows. Won't run on Apple. Won't run on phones. Won't do drums. Midi conversion is a command line operation.
The download includes all the C language source code. Builds with Visual Studio. No extra libraries are required. Statically linked single executable is included and runs stand-alone. No support DLLs required. 33 wind instrument flac input files are included, along with the corresponding midi output files. Even if you don't have a Windows PC, you can listen to the conversion results. All of the input audio is from youtube.
The 33 sample conversions include:
4 clarinet
17 oboe
2 tuba
2 trumpet
2 flute
1 piccolo
5 sax
But is it multiphonic you ask? I roll my eyes when people get so focused on multiphonic before their app can even properly decode the first phrase of Twinkle Twinkle Little Star. Yes, it's definitely multiphonic. But multiphonic operation is mostly off by default. Command line option minpowergain(here) turns it on. With some additional command line options, it can pick up 4 notes of a 6 string guitar strum. One of the multiphonic limitations is that it merges harmonics belonging to the same note at 2 different octaves.
u/BatchModeBob — 12 days ago