Delay in decoder about lyra

[aluebs]

The total encoder/decoder delay is actually 100ms.

[Xue9901]

Hi, thanks for the reply. But when I look at the decoded waveform and the original waveform, as show in the figure above, it seems not be 100ms? may be a little shorter?

[aluebs]

There are 2 factors at play here. First, since you are measuring the delay from the input to output file, it doesn't take into account the time it takes to fill the buffer for the initial step, which adds an additional 40ms. So from the files you should be seeing something similar to 60ms of delay.
Additionally, these generative models can mess with the phase and delay withing a frame a bit, which means that the exact delay of a pair of files would rarely line up exactly with the estimated one.

[aluebs]

The delay was reduced to 20ms in the new Lyra 1.2.0 release. But if you re-run your experiment you'll see the files basically line up, since all the delay is only from buffering.