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Related: Show HN: I've built a spectrogram analyzer web app https://news.ycombinator.com/item?id=35781959 https://news.ycombinator.com/item?id=35781959 (19 da
by password4321 3y ago
Related:
Show HN: I've built a spectrogram analyzer web app
https://news.ycombinator.com/item?id=35781959 https://news.ycombinator.com/item?id=35781959 (19 days ago)
https://webfft.net/dft/ https://webfft.net/dft/
- totetsu 3y agoThat Webfft is fun. Try recording yourself making a few long vowel sounds A I U E O AE UH , and take a look at how the harmonics/formants/ the pattern of peeks at different frequencies is distributed between sounds.
- ssgh 3y agoFYI, it supports decoding ultrasound wav files. I use a Dodotronic UM250K mic to capture ultrasound up to 125 kHz. LCD monitor and other electronics emits some interesting sounds. For some reason, getUserMedia doesn't allow high sample rates, but ffmpeg works: ffmpeg -f alsa -channels 1 -sample_rate 250000 -i hw:CARD=r4,DEV=0 -t 5 mic.wav