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Audio Frequency Counter - keuwl.com
http://www.keuwl.com/AudioFrequencyCounter/
Audio Frequency Counter - Apps on Google Play
https://play.google.com/store/apps/details?id=com.keuwl.audiofrequencycounter&hl=en_US&gl=US
Free Online Loudness and Sound Meter by Youlean
https://youlean.co/online-loudness-meter/
No, all audio data is being used locally. What mode does this meter have? It has the ITU-R BS.1770-4, or dB A-Weighted mode. How accurate is this meter compared to other professional SPL meters? Analyzing from the microphone will not give you accurate SPL-Loudness values since it is limited to the hardware on which it is being used. If you want ...
Get Audio Meter - Microsoft Store
https://www.microsoft.com/en-us/p/audio-meter/9wzdncrdkgt7
Spectrum Analyzer | Academo.org - Free, interactive ...
https://academo.org/demos/spectrum-analyzer/
The frequency spectrum is generated by applying a Fourier transform to the time-domain signal. The demo above allows you to select a number of preset audio files, such as whale/dolphin clicks, police sirens, bird songs, whistling, musical instruments and even an old 56k dial-up modem.
Audio Frequency Counter for Android - APK Download
https://apkpure.com/audio-frequency-counter/com.keuwl.audiofrequencycounter
Microphone Sound Analyzer - ComPADRE
https://www.compadre.org/osp/pwa/soundanalyzer/
Microphone Sound Analyzer. Δf=2.00 kHz x:undefined,y:undefined 0.0 2.0 4.0 6.0 8.0 10.0 -80 -70 -60 -50 -40 -30 -20 -10 0 f (kHz) audio level (dB) Frequency Spectrum Δt=5.94 ms x:undefined,y:undefined Press play button to start. 0.0 1.2 2.4 3.6 4.8 6.0 7.2 8.4 9.6 10.8 12.0 13.2 14.4 15.6 16.8 18.0 19.2 20.4 21.6 22.8 -0.3 -0.1 0.0 0.1 0.2 0 ...
Digital Frequency Counter - Hamradio.in
https://www.hamradio.in/projects/digital-frequency-counter
The counter is capable of counting of all HF signals, but if you need to measure VHF frequencies, you need a pre-scalar. Which divides the input by factor say 10 so that the out put is now 1/10 of the input. The frequency is now in the HF and can be easily read by the counter. Actual frequency is now10 times of the displayed frequency.
A SIMPLE FREQUENCY METER - QSL.net
https://www.qsl.net/pa2ohh/11freqcnt1.htm
A frequency counter counts during a certain time the number of periods. This frequency counter works differently. Of a certain number of periods, the exact time is measured. The resolution of this time measurement depends on the sample rate of the soundcard. The resolution of the time measurement is plus or minus 1 sample.
Online Tone Generator - generate pure tones of any …
https://www.szynalski.com/tone-generator/
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