v15w

11 ms·

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Open source USB to GPIB converter (for Test and Measurement instruments)(github.com)
91 points by v15w 9mo ago|45 comments
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by v15w 1y ago
CNC machines ? Chromatic mode should definitely be useful. The visual feedback requires an accurate reference frequency. You may play with A4 value or ratios to get desired non musical frequency value.
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by v15w 1y ago
To wrap up, Thanks, HN community. Your feedback, comments, suggestions, and technical discussions have been truly humbling. We're delighted to offer a complimentary premium version of the app to anyone who contributed to this thread, o
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by v15w 1y ago
Post your detailed feedback when you have time or e-mail us. Will be checking the thread. If there is even a slight variation of pitch w.r.t reference note the visual feedback will rotate. But, the feedback would give an idea about the devi
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by v15w 1y ago
Interesting. It took time for us to get the waveform stability working. We also have a smoothed wave overlay on top of raw signal. This is more a filtered version of input signal. Tried adding more filtering to get the sine wave output. But
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by v15w 1y ago
No. When sharp even by 0.5Hz the waveform rotates right and left when flat.
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by v15w 1y ago
> me immediate feedback on my pitch accuracy while I play The visual feedback needs manual reference note settings. That is the only limitation.
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by v15w 1y ago
There is a short video here https://www.youtube.com/shorts/gZbP7svgBUM (not comprehensive. uses simulated sine wave and app generated tones). There is no web or iOS version.
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by v15w 1y ago
The visual feedback uses time period (of ref note) and number of cycles to set the scale of waveform display. It doesn't depend on detected pitch. I think strobe tuner's used neat analog electronics based reference and filters to
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by v15w 1y ago
Thanks for your valuable feedback. Instrument list and temperament profiles would be expanded before adding other new features. The project started as a tuner app for South Indian Veena & as a fretting aid (based on ratios). On base not
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by v15w 1y ago
Wow, impressive stability. In case of violin (bowed instrument), the waveform stability is visualised very well. Closer to sine wave. I tend to see less harmonics than plucked lutes like South Indian Veena. Please select 2 or 4 waveform per
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by v15w 1y ago
An iOS version is definitely in our plans. We intend to launch it once this app has gained sufficient traction.
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by v15w 1y ago
Yes. The pitch displayed and needle interface is based on measured frequency. It also shows the nearest note name based on this measured value. The visual waveform interface's stability is based on reference frequency set. There is sti
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by v15w 1y ago
We will be introducing an ad-free premium version once we finalize the implementation details. We also wish to clarify that English is not our native language.
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by v15w 1y ago
Pitch detection is computed and can sometimes be influenced by external noise or sampling limitations.It can jump. However, the visual display is based on the period of the reference note (or set frequency), allowing it to function independ
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by v15w 1y ago
This visual feedback is very similar. It also shows octave changes i.e if the pitch detected is 0.5x, 1x or 2x the reference freq / note set.
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by v15w 1y ago
Thanks for the feedback! Ads help us keep the app free and support ongoing development.
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by v15w 1y ago
Pitch is an estimate based on sampled audio. Sometimes, it is not always accurately detected. Here, we have an additional visual cue that produces a stable/stationary waveform when the detected pitch is in tune with the selected refere
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Show HN: Veena Chromatic Tuner(play.google.com)
53 points by v15w 1y ago|45 comments