The amplitude of a periodic variable is a measure of its change over a single period
Questions tagged [amplitude]
147 questions
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MediaRecorder.getMaxAmplitude returns always 0
I'm new in Java and my English isn't the best too.
I want to write an app which meassures the Amplitude of a record. The app works except for the fact, that the amplitude is always 0. I have now read several websites, but didn't found an answer. I…
blublub12
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sampling wav files in to get amplitude at a specific time
i am wondering if there is any way to cycle through a .wav file to get the amplitude/DB of a specific point in the wav file. i am reading it into a byte array now but that has no help to me from what i can see.
i am using this in conjunction with…
Dsfsdaf Dsfadasf
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How to draw a waveform for 2 or more channels:Getting amplitude from 2 or more channels?
I am doing a project which requires signal processing of the audio when a wave file is provided to me.
I know how to compute the amplitude using sample value of a channel using the formula
20*log(Sample Value/Maximum attainable sample Value)
But…
Soul Enrapturer
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Get aplitude curve from audio
I am using libmpg123 library for parsing and decoding mp3 song, but I want draw something like this:
http://img.photobucket.com/albums/v627/Flabbergast/jurafirstCDpressing-1.jpg
How can I get an amplitude from mp3 song? I am trying to find solution…
Jakub
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1 answer
Calculating amplitude of a waveform chunk, ignore short peaks
I have an incoming sine test signal from a microphone. I know that I can find a peak amplitude just by scanning the vaweform samples and looking for max magnitude (taking into account that it may be also negative). I take chunks about 500ms.
The…
JustAMartin
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1 answer
How to equate the amplitude of two sinusoidal signals in gnu radio?
I have two sinusoidal signals with different amplitude. I would like to equate the amplitude of the two signals. For instance, if the amplitude of the second signal is lower than the first signal's one, I want to equate both.
Roby
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2 answers
Getting frequency and amplitude from an audio file using FFT - so close but missing some vital insights, eli5?
tl/dr: I've got two audio recordings of the same song without timestamps, and I'd like to align them. I believe FFT is the way to go, but while I've got a long way, it feels like I'm right on the edge of understanding enough to make it work, and…
Benjamin H
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1 answer
How to add Library 'android-android-25' to LibGdx?
I'm trying to use the android's AudioRecord in LibGdx, but when I press on "Add library 'android-android-25' to classpath" nothing happens.
I cannot use LibGdx's AudioRecorder, because I want to get the amplitude of the microphone (like…
USer9123
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How to obtain amplitude value for android device's ringer
I am developing an android app and I need to obtain the amplitude values of the device's ringtone. I need these values to compare them against the amplitude values of the ambient noise around the device. I know how to get the amplitude values of the…
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1 answer
getAmplitude isn't working
When I try to work it's show on textviev "0.0" value.
I get codes from this web site mostly
I get permissions to
Harun Uysal
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1 answer
Frequency & amplitue
I have a sql table which contains 2 columns:
How to calculate the frequency of the highest amplitude wave ?
(Each wave is of fixed frequency).
Thank you
Walid
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Divide by zero error when calculating frequency?
I have a file containing 2 columns: time & volts.
I'm trying to calculate the frequency of the highest amplitude wave.
(Bear in mind that Each wave is of fixed frequency)
I'm ordering the file in Excel using the volts column in descending order,…
Martin Hunt
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