SpecStream Audio Spectrum Plot
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App gets audio data from microphone and plots the real time spectrum in the form of a scrolling image.
App settings:
âĸ Sample Rate = the sample rate (in Hz) at which the microphone will be read. Most devices support up to 48 kHz. High-end devices support up to 192 kHz.
âĸ FFT Buffer Size = the size (in samples) of the audio buffer used to compute the FFT. Must be a power of 2, min = 128, max = 16384. Bigger value gives better frequency resolution. Smaller value gives better time resolution.
âĸ Min. Dispalyed Frequency
âĸ Max. Displayed Frequency
âĸ Gain (dB)
âĸ Displayed Time Window (in milliseconds)
âĸ Frequency Grid Step (in Hz) = will draw horizontal division lines
âĸ Time Grid Step (in milliseconds) = will draw vertical division lines moving together with the plot.
Free version limitations:
âĸ sample rate = 8000 Hz (fixed)
âĸ FFT buffer size = 512 (fixed)
Users can upgrade to Premium Version via in-app purchase (one time payment).
Premium version advantages:
âĸ configurable sample rate.
âĸ configurable FFT buffer size: 128, 256, 512, 1024, 2048, 4096, 8192, 16384.
Planned features for future app updates:
âĸ show spectrum of audio file
âĸ export spectrum to file
App settings:
âĸ Sample Rate = the sample rate (in Hz) at which the microphone will be read. Most devices support up to 48 kHz. High-end devices support up to 192 kHz.
âĸ FFT Buffer Size = the size (in samples) of the audio buffer used to compute the FFT. Must be a power of 2, min = 128, max = 16384. Bigger value gives better frequency resolution. Smaller value gives better time resolution.
âĸ Min. Dispalyed Frequency
âĸ Max. Displayed Frequency
âĸ Gain (dB)
âĸ Displayed Time Window (in milliseconds)
âĸ Frequency Grid Step (in Hz) = will draw horizontal division lines
âĸ Time Grid Step (in milliseconds) = will draw vertical division lines moving together with the plot.
Free version limitations:
âĸ sample rate = 8000 Hz (fixed)
âĸ FFT buffer size = 512 (fixed)
Users can upgrade to Premium Version via in-app purchase (one time payment).
Premium version advantages:
âĸ configurable sample rate.
âĸ configurable FFT buffer size: 128, 256, 512, 1024, 2048, 4096, 8192, 16384.
Planned features for future app updates:
âĸ show spectrum of audio file
âĸ export spectrum to file
View audio spectrum in real time
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âĸ targetSdk 36
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HARDCODED JOY SRL
contact@hardcodedjoy.com
STR. RUSCIORULUI NR. 46 AP. 18
550112 SIBIU
Romania
+40 756 396 676
