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[hts-users:03234] Re: How to choose fft length?


FFT length should be larger than frame length.

For example, the frame length is 25ms in the HTS-2.2 demo scripts.
When you use 16kHz data, the frame length in point is 400 (400 = 16000 * 0.025).
In this case, the FFT length should be 512 (>= 400).

Anyway, after you try to use 256, 512, 1024, and 2048, please report
the quality of synthesized speech.

Keiichiro Oura

2012/4/14 snc <sunnaicaiyuhuan@xxxxxxx>:
> Hi,
> I want to change the frame shift length from 5ms to 10ms.
> But I don't know whether the fft length should be changed at the same time.
> The wav files' sampling rate I use is 16000Hz. As we know, the default fft
> length
> for sampling rate 48000 is 2048.
> Then what's the fft length should I choose? Does it have something to do
> with
> sampling rate or frame shift length?

[hts-users:03233] How to choose fft length?, snc