Fix test failure in LSPDF-based synthesis about pysptk HOT 8 CLOSED

When trying to use LSPDF after applying lpc2lsp, I keep getting "ParameterError: Audio buffer is not finite everywhere". Is this the bug you're referring to?
If so, has there been any progress in fixing it? Or, alternatively, are there plans to implement an lsp2lpc function?

Thanks so much!

from pysptk.

No, as I remember correctly it wasn't a ParameterError. Could you paste your code so that I can reproduce the issue? For now there is no plan to implement lsp2lpc from scratch.

from pysptk.

Tests failure is here:

from pysptk.

Thanks for the quick response!
I modified your test code and inserted it at the end of the speech analysis notebook. It now results in an AssertionError.

from pysptk.synthesis import LSPDF

order = 10
lpc = np.apply_along_axis(pysptk.lpc, 1, frames, order)
# make sure lsp has loggain
lsp = np.apply_along_axis(pysptk.lpc2lsp, 1, lpc)
lsp[:, 0] = np.log(lsp[:, 0])

# synthesis
synthesizer = Synthesizer(LSPDF(order), hop_length)
y = synthesizer.synthesis(source_excitation, lsp)
assert np.all(np.isfinite(y))

AssertionError                            Traceback (most recent call last)
<ipython-input-42-0aa71a6f3baa> in <module>()
     10 synthesizer = Synthesizer(LSPDF(order), hop_length)
     11 y = synthesizer.synthesis(source_excitation, lsp)
---> 12 assert np.all(np.isfinite(y))

AssertionError: 

from pysptk.

Yes, this is what I was trying to solve.

from pysptk.

Ok, at least we're on the same page :)
The problem seems to be for orders out of the range [20,25] as well.

On Tue, May 24, 2016 at 4:02 PM, Ryuichi Yamamoto [email protected]
wrote:

Yes, this is what I was trying to solve.

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from pysptk.

Is that the same issue you see before? This is not a ParameterError.

from pysptk.

Yes, sorry. I got a ParameterError when I tried to plot the result using
waveplot.

On Tue, May 24, 2016 at 5:01 PM, Ryuichi Yamamoto [email protected]
wrote:

Is that the same issue you see before? This is not a ParameterError.

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from pysptk.