Acoustics – phyphox https://phyphox.org Physical Phone Experiments Tue, 20 Jul 2021 09:22:38 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://phyphox.org/wp-content/uploads/2019/06/icon-150x150.png Acoustics – phyphox https://phyphox.org 32 32 Audio Amplitude https://phyphox.org/experiment/audio-amplitude/ Fri, 06 Jan 2017 15:29:48 +0000 http://phyphox.org/?post_type=experiment&p=464 Continue reading "Audio Amplitude"]]> A simple experiment, which determines the amplitude of the signal recorded from the microphone. The amplitude is uncalibrated and has an arbitrary offset, but it can be calibrated by using a known reference signal. (You will find further informatiaon in the actual experiment.)

]]> Audio Autocorrelation https://phyphox.org/experiment/audio-autocorrelation/ Fri, 06 Jan 2017 16:59:17 +0000 http://phyphox.org/?post_type=experiment&p=466 Calculates the autocorrelation of audio signals recorded with the microphone. The frequency of the signal is given, which only works reasonable for single-frequency signals.

]]> Audio Scope https://phyphox.org/experiment/audio-scope/ Fri, 06 Jan 2017 19:55:02 +0000 http://phyphox.org/?post_type=experiment&p=491 View 10 ms segments of the raw audio data recorded by the microphone with oscilloscope-like edge triggering.

]]> Audio Spectrum https://phyphox.org/experiment/audio-spectrum/ Fri, 06 Jan 2017 19:57:37 +0000 http://phyphox.org/?post_type=experiment&p=493 Calculates and displays the FFT of audio from the microphone. The strongest frequency is given as well.

]]> Doppler effect https://phyphox.org/experiment/doppler-effect/ Fri, 06 Jan 2017 20:15:07 +0000 http://phyphox.org/?post_type=experiment&p=495 Continue reading "Doppler effect"]]> Use the microphone do determine a Doppler shift from a given base frequency.

This experiment is quite sensible to noise and needs some fine tuning. An easier to use and better documented version will be added later. Until then, it is highly recommended to read the Wiki entry to learn how this experiment works and how it can be optimized.

]]> Frequency history https://phyphox.org/experiment/frequency-history/ Fri, 06 Jan 2017 20:26:00 +0000 http://phyphox.org/?post_type=experiment&p=497 Continuously determine the frequency recorded by the microphone and plot a history of this frequency over time.

]]> Sonar https://phyphox.org/experiment/sonar/ Fri, 06 Jan 2017 20:29:59 +0000 http://phyphox.org/?post_type=experiment&p=499 Turns your phone into a sonar to either measure distances or determine the speed of sound.

]]> Speed of sound https://phyphox.org/experiment/speed-of-sound/ Tue, 14 Feb 2017 16:43:59 +0000 http://phyphox.org/?post_type=experiment&p=617 Using the acoustic stopwatch you can determine the speed of sound with two phones and a tape measure.

]]> Tone generator https://phyphox.org/experiment/tone-generator/ Fri, 06 Jan 2017 20:33:57 +0000 http://phyphox.org/?post_type=experiment&p=501 Generates a sine tone of a given frequency and outputs it through the speaker.

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