Is it possible to produce a sound from frequency spectrum data?
With an AnalyzerNode, you can convert a sound into frequency spectrum data with the getByteFrequencyData / getFloatFrequencyData methods.
Is it possible to go in the reverse direction, and play a sound from frequency spectrum data?
javascript fft web-audio
edited Jan 2 at 17:12
Patrick Roberts
20.1k33576
asked Dec 31 '18 at 16:46
Eric Andrew LewisEric Andrew Lewis
592517
add a comment |
With an AnalyzerNode, you can convert a sound into frequency spectrum data with the getByteFrequencyData / getFloatFrequencyData methods.
Is it possible to go in the reverse direction, and play a sound from frequency spectrum data?
javascript fft web-audio
edited Jan 2 at 17:12
Patrick Roberts
20.1k33576
asked Dec 31 '18 at 16:46
Eric Andrew LewisEric Andrew Lewis
592517
I'm guessing no, since there are nosetfunctions for frequency data.
– Herohtar
Dec 31 '18 at 16:49
However, you could take some frequency data and perform an inverse FFT on it yourself to get a waveform and play that.
– Herohtar
Dec 31 '18 at 16:50
Yes you can. See here: marcgg.com/blog/2016/11/01/javascript-audio
– Dai
Dec 31 '18 at 16:52
@Dai That's not what he was asking about.
– Herohtar
Dec 31 '18 at 16:53
@Herohtar the article describes sound synthesis from single sinusoidal waveforms. It is not a direct solution to the OP’s problem but with the OP’s frequency spectrum data it’s just a matter of extending this technique for each frequency revealed by FFT.
– Dai
Dec 31 '18 at 16:56
add a comment |
With an AnalyzerNode, you can convert a sound into frequency spectrum data with the getByteFrequencyData / getFloatFrequencyData methods.
Is it possible to go in the reverse direction, and play a sound from frequency spectrum data?
javascript fft web-audio
edited Jan 2 at 17:12
Patrick Roberts
20.1k33576
asked Dec 31 '18 at 16:46
Eric Andrew LewisEric Andrew Lewis
592517
With an AnalyzerNode, you can convert a sound into frequency spectrum data with the getByteFrequencyData / getFloatFrequencyData methods.
Is it possible to go in the reverse direction, and play a sound from frequency spectrum data?
javascript fft web-audio
javascript fft web-audio
edited Jan 2 at 17:12
Patrick Roberts
20.1k33576
asked Dec 31 '18 at 16:46
Eric Andrew LewisEric Andrew Lewis
592517
edited Jan 2 at 17:12
Patrick Roberts
20.1k33576
asked Dec 31 '18 at 16:46
Eric Andrew LewisEric Andrew Lewis
592517
edited Jan 2 at 17:12
Patrick Roberts
20.1k33576
edited Jan 2 at 17:12
Patrick Roberts
20.1k33576
edited Jan 2 at 17:12
Patrick Roberts
20.1k33576
20.1k33576
asked Dec 31 '18 at 16:46
Eric Andrew LewisEric Andrew Lewis
592517
asked Dec 31 '18 at 16:46
Eric Andrew LewisEric Andrew Lewis
592517
asked Dec 31 '18 at 16:46
Eric Andrew LewisEric Andrew Lewis
592517
592517
I'm guessing no, since there are nosetfunctions for frequency data.
– Herohtar
Dec 31 '18 at 16:49
However, you could take some frequency data and perform an inverse FFT on it yourself to get a waveform and play that.
– Herohtar
Dec 31 '18 at 16:50
Yes you can. See here: marcgg.com/blog/2016/11/01/javascript-audio
– Dai
Dec 31 '18 at 16:52
@Dai That's not what he was asking about.
– Herohtar
Dec 31 '18 at 16:53
@Herohtar the article describes sound synthesis from single sinusoidal waveforms. It is not a direct solution to the OP’s problem but with the OP’s frequency spectrum data it’s just a matter of extending this technique for each frequency revealed by FFT.
– Dai
Dec 31 '18 at 16:56
add a comment |
I'm guessing no, since there are nosetfunctions for frequency data.
– Herohtar
Dec 31 '18 at 16:49
However, you could take some frequency data and perform an inverse FFT on it yourself to get a waveform and play that.
– Herohtar
Dec 31 '18 at 16:50
Yes you can. See here: marcgg.com/blog/2016/11/01/javascript-audio
– Dai
Dec 31 '18 at 16:52
@Dai That's not what he was asking about.
– Herohtar
Dec 31 '18 at 16:53
@Herohtar the article describes sound synthesis from single sinusoidal waveforms. It is not a direct solution to the OP’s problem but with the OP’s frequency spectrum data it’s just a matter of extending this technique for each frequency revealed by FFT.
– Dai
Dec 31 '18 at 16:56
I'm guessing no, since there are no
set functions for frequency data.– Herohtar
Dec 31 '18 at 16:49
I'm guessing no, since there are no
set functions for frequency data.– Herohtar
Dec 31 '18 at 16:49
However, you could take some frequency data and perform an inverse FFT on it yourself to get a waveform and play that.
– Herohtar
Dec 31 '18 at 16:50
However, you could take some frequency data and perform an inverse FFT on it yourself to get a waveform and play that.
– Herohtar
Dec 31 '18 at 16:50
Yes you can. See here: marcgg.com/blog/2016/11/01/javascript-audio
– Dai
Dec 31 '18 at 16:52
Yes you can. See here: marcgg.com/blog/2016/11/01/javascript-audio
– Dai
Dec 31 '18 at 16:52
@Dai That's not what he was asking about.
– Herohtar
Dec 31 '18 at 16:53
@Dai That's not what he was asking about.
– Herohtar
Dec 31 '18 at 16:53
@Herohtar the article describes sound synthesis from single sinusoidal waveforms. It is not a direct solution to the OP’s problem but with the OP’s frequency spectrum data it’s just a matter of extending this technique for each frequency revealed by FFT.
– Dai
Dec 31 '18 at 16:56
@Herohtar the article describes sound synthesis from single sinusoidal waveforms. It is not a direct solution to the OP’s problem but with the OP’s frequency spectrum data it’s just a matter of extending this technique for each frequency revealed by FFT.
– Dai
Dec 31 '18 at 16:56
add a comment |
1 Answer
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The frequency spectrum data must include the phase information. If it does, you can use the OscillatorNode to reproduce the periodic sound. Convert the magnitude and phase information (polar form) to the real and imaginary (rectangular) components to create an appropriate PeriodicWave and initialize an OscillatorNode with that periodic wave.
The information from an AnalyserNode is not enough because that only contains the magnitude part of the frequency spectrum.
answered Jan 2 at 17:08
Raymond ToyRaymond Toy
3,13069
add a comment |
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1 Answer
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The frequency spectrum data must include the phase information. If it does, you can use the OscillatorNode to reproduce the periodic sound. Convert the magnitude and phase information (polar form) to the real and imaginary (rectangular) components to create an appropriate PeriodicWave and initialize an OscillatorNode with that periodic wave.
The information from an AnalyserNode is not enough because that only contains the magnitude part of the frequency spectrum.
answered Jan 2 at 17:08
Raymond ToyRaymond Toy
3,13069
add a comment |
The frequency spectrum data must include the phase information. If it does, you can use the OscillatorNode to reproduce the periodic sound. Convert the magnitude and phase information (polar form) to the real and imaginary (rectangular) components to create an appropriate PeriodicWave and initialize an OscillatorNode with that periodic wave.
The information from an AnalyserNode is not enough because that only contains the magnitude part of the frequency spectrum.
answered Jan 2 at 17:08
Raymond ToyRaymond Toy
3,13069
add a comment |
The frequency spectrum data must include the phase information. If it does, you can use the OscillatorNode to reproduce the periodic sound. Convert the magnitude and phase information (polar form) to the real and imaginary (rectangular) components to create an appropriate PeriodicWave and initialize an OscillatorNode with that periodic wave.
The information from an AnalyserNode is not enough because that only contains the magnitude part of the frequency spectrum.
answered Jan 2 at 17:08
Raymond ToyRaymond Toy
3,13069
The frequency spectrum data must include the phase information. If it does, you can use the OscillatorNode to reproduce the periodic sound. Convert the magnitude and phase information (polar form) to the real and imaginary (rectangular) components to create an appropriate PeriodicWave and initialize an OscillatorNode with that periodic wave.
The information from an AnalyserNode is not enough because that only contains the magnitude part of the frequency spectrum.
answered Jan 2 at 17:08
Raymond ToyRaymond Toy
3,13069
answered Jan 2 at 17:08
Raymond ToyRaymond Toy
3,13069
answered Jan 2 at 17:08
Raymond ToyRaymond Toy
3,13069
answered Jan 2 at 17:08
Raymond ToyRaymond Toy
3,13069
3,13069
add a comment |
add a comment |
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I'm guessing no, since there are no
setfunctions for frequency data.– Herohtar
Dec 31 '18 at 16:49
However, you could take some frequency data and perform an inverse FFT on it yourself to get a waveform and play that.
– Herohtar
Dec 31 '18 at 16:50
Yes you can. See here: marcgg.com/blog/2016/11/01/javascript-audio
– Dai
Dec 31 '18 at 16:52
@Dai That's not what he was asking about.
– Herohtar
Dec 31 '18 at 16:53
@Herohtar the article describes sound synthesis from single sinusoidal waveforms. It is not a direct solution to the OP’s problem but with the OP’s frequency spectrum data it’s just a matter of extending this technique for each frequency revealed by FFT.
– Dai
Dec 31 '18 at 16:56